[PATCH RFC 10/33] treewide: Modify mutex_lock_interruptible() return value checks
From: Bart Van Assche
Date: Thu Feb 06 2025 - 12:58:20 EST
Change all checks of the mutex_lock_interruptible() return value and also
all the checks of callers of this function into != 0 or == 0.
This patch prepares for annotating mutex_lock_interruptible() and its
callers with the thread-safety attribute TRY_ACQUIRE(0, mutex_ptr). This
tells Clang that the return value 0 and only this return value indicates
that the mutex has been locked. This change is necessary because checks
like < 0 on the mutex_lock_interruptible() return value confuse the Clang
thread-safety checker.
This patch has been generated by applying the following Coccinelle semantic
patch on the kernel tree:
@@
expression mutex, expr;
statement stmnt;
@@
(
-if (device_lock_interruptible(mutex) < 0) stmnt
+if (device_lock_interruptible(mutex)) stmnt
|
-if (mutex_lock_interruptible(mutex) < 0) stmnt
+if (mutex_lock_interruptible(mutex)) stmnt
|
-if (mutex_lock_killable(mutex) < 0) stmnt
+if (mutex_lock_killable(mutex)) stmnt
|
-if (mutex_lock_killable_nested(mutex) < 0) stmnt
+if (mutex_lock_killable_nested(mutex)) stmnt
|
-if (usb_lock_device_for_reset(mutex, expr) < 0) stmnt
+if (usb_lock_device_for_reset(mutex, expr)) stmnt
)
@@
expression mutex, expr, expr1, expr2, expr3, tty;
statement stmnt, stmnt1, stmnt2;
identifier ret;
@@
(
-ret = device_lock_interruptible(mutex);
-if (ret < 0) stmnt
+ret = device_lock_interruptible(mutex);
+if (ret) stmnt
|
-if ((ret = get_ready_ep(expr1, expr2, expr3)) < 0) stmnt
+ret = get_ready_ep(expr1, expr2, expr3);
+if (ret) stmnt
|
-ret = mlxbf2_gpio_lock_acquire(mutex);
-if (ret < 0) stmnt
+ret = mlxbf2_gpio_lock_acquire(mutex);
+if (ret) stmnt
|
-int ret = mutex_lock_interruptible(mutex);
-if (ret < 0) stmnt
+int ret = mutex_lock_interruptible(mutex);
+if (ret) stmnt
|
-ret = mutex_lock_interruptible(mutex);
-if (ret < 0) stmnt
+ret = mutex_lock_interruptible(mutex);
+if (ret) stmnt
|
-if ((ret = mutex_lock_interruptible(mutex)))
-return ret;
+ret = mutex_lock_interruptible(&d->usb_mutex);
+if (ret) return ret;
|
-if (mutex_lock_interruptible(mutex) == -EINTR) stmnt
+if (mutex_lock_interruptible(mutex)) stmnt
|
-ret = mutex_lock_killable(mutex);
-if (ret < 0) stmnt
+ret = mutex_lock_killable(mutex);
+if (ret) stmnt
|
-ret = mutex_lock_killable_nested(mutex);
-if (ret < 0) stmnt
+ret = mutex_lock_killable_nested(mutex);
+if (ret) stmnt
|
-ret = tty_write_lock(tty, expr);
-if (ret < 0) stmnt
+ret = tty_write_lock(tty, expr);
+if (ret) stmnt
|
-if (tty_write_lock(tty, expr) < 0) stmnt
+if (tty_write_lock(tty, expr)) stmnt
|
-if (tty_write_lock(tty, expr) < 0) stmnt;
-if (ret < 0) stmnt
+ret = tty_write_lock(tty, expr);
+if (ret) stmnt
|
-ret = usb_lock_device_for_reset(expr1, expr2);
-if (ret < 0) stmnt
+ret = usb_lock_device_for_reset(expr1, expr2);
+if (ret) stmnt
|
-ret = usb_lock_device_for_reset(expr1, expr2);
-if (ret < 0) stmnt1 else stmnt2
+ret = usb_lock_device_for_reset(expr1, expr2);
+if (ret) stmnt1 else stmnt2
|
-ret = usb_lock_device_for_reset(expr1, expr2);
-if (ret >= 0) stmnt
+ret = usb_lock_device_for_reset(expr1, expr2);
+if (ret == 0) stmnt
|
-ret = usb_lock_device_interruptible(expr);
-if (ret < 0) stmnt
+ret = usb_lock_device_interruptible(expr);
+if (ret) stmnt
|
-ret = usblp_rwait_and_lock(mutex, expr);
-if (ret < 0) stmnt
+ret = usblp_rwait_and_lock(mutex, expr);
+if (ret) stmnt
)
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
drivers/gpio/gpio-mlxbf2.c | 4 +-
drivers/hwmon/asus_rog_ryujin.c | 4 +-
drivers/hwmon/gigabyte_waterforce.c | 2 +-
drivers/hwmon/nzxt-kraken3.c | 2 +-
drivers/infiniband/ulp/srp/ib_srp.c | 2 +-
drivers/infiniband/ulp/srpt/ib_srpt.c | 4 +-
drivers/leds/leds-blinkm.c | 2 +-
drivers/media/dvb-frontends/bcm3510.c | 2 +-
drivers/media/dvb-frontends/dib0070.c | 4 +-
drivers/media/dvb-frontends/dib0090.c | 8 ++--
drivers/media/dvb-frontends/dib7000m.c | 4 +-
drivers/media/dvb-frontends/dib7000p.c | 4 +-
drivers/media/dvb-frontends/dib8000.c | 10 ++---
drivers/media/dvb-frontends/dib9000.c | 42 +++++++++----------
drivers/media/dvb-frontends/dibx000_common.c | 10 ++---
drivers/media/usb/dvb-usb-v2/af9035.c | 2 +-
drivers/media/usb/dvb-usb-v2/anysee.c | 2 +-
drivers/media/usb/dvb-usb-v2/au6610.c | 2 +-
drivers/media/usb/dvb-usb-v2/az6007.c | 6 +--
drivers/media/usb/dvb-usb-v2/ce6230.c | 2 +-
drivers/media/usb/dvb-usb-v2/dvbsky.c | 2 +-
drivers/media/usb/dvb-usb-v2/ec168.c | 2 +-
drivers/media/usb/dvb-usb-v2/lmedm04.c | 2 +-
drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c | 2 +-
drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 2 +-
drivers/media/usb/dvb-usb/af9005.c | 2 +-
drivers/media/usb/dvb-usb/az6027.c | 2 +-
drivers/media/usb/dvb-usb/cxusb.c | 2 +-
drivers/media/usb/dvb-usb/dib0700_core.c | 20 ++++-----
drivers/media/usb/dvb-usb/dibusb-common.c | 2 +-
drivers/media/usb/dvb-usb/digitv.c | 2 +-
drivers/media/usb/dvb-usb/dtv5100.c | 2 +-
drivers/media/usb/dvb-usb/dvb-usb-urb.c | 3 +-
drivers/media/usb/dvb-usb/dw2102.c | 16 +++----
drivers/media/usb/dvb-usb/gp8psk.c | 6 ++-
drivers/media/usb/dvb-usb/m920x.c | 2 +-
drivers/media/usb/dvb-usb/opera1.c | 4 +-
drivers/media/usb/dvb-usb/pctv452e.c | 4 +-
drivers/media/usb/dvb-usb/technisat-usb2.c | 10 ++---
drivers/media/usb/dvb-usb/ttusb2.c | 2 +-
drivers/media/usb/dvb-usb/vp702x.c | 5 ++-
.../media/usb/ttusb-budget/dvb-ttusb-budget.c | 4 +-
drivers/media/usb/uvc/uvc_ctrl.c | 6 +--
drivers/net/ethernet/mellanox/mlxsw/i2c.c | 4 +-
drivers/net/usb/cdc_subset.c | 2 +-
drivers/net/wireless/intersil/p54/p54usb.c | 2 +-
drivers/net/wireless/ti/wlcore/sysfs.c | 2 +-
drivers/platform/x86/thinkpad_acpi.c | 12 +++---
drivers/scsi/hpsa.c | 2 +-
.../gpib/lpvo_usb_gpib/lpvo_usb_gpib.c | 4 +-
drivers/tty/tty_io.c | 6 +--
drivers/usb/class/cdc-wdm.c | 3 +-
drivers/usb/class/usblp.c | 2 +-
drivers/usb/core/message.c | 2 +-
drivers/usb/core/sysfs.c | 24 +++++------
drivers/usb/gadget/legacy/inode.c | 13 +++---
drivers/usb/misc/yurex.c | 2 +-
drivers/usb/storage/transport.c | 2 +-
drivers/usb/usb-skeleton.c | 2 +-
drivers/usb/usbip/stub_dev.c | 2 +-
drivers/usb/usbip/stub_rx.c | 2 +-
drivers/w1/masters/omap_hdq.c | 8 ++--
fs/afs/validation.c | 2 +-
fs/afs/vl_alias.c | 6 +--
fs/fsopen.c | 2 +-
fs/namespace.c | 2 +-
fs/orangefs/devorangefs-req.c | 2 +-
fs/proc/base.c | 2 +-
kernel/seccomp.c | 10 ++---
mm/kmemleak.c | 4 +-
net/rxrpc/recvmsg.c | 2 +-
net/rxrpc/sendmsg.c | 2 +-
security/integrity/ima/ima_fs.c | 2 +-
sound/pci/oxygen/oxygen_lib.c | 2 +-
74 files changed, 181 insertions(+), 175 deletions(-)
diff --git a/drivers/gpio/gpio-mlxbf2.c b/drivers/gpio/gpio-mlxbf2.c
index 6f3dda6b635f..5ae07367955f 100644
--- a/drivers/gpio/gpio-mlxbf2.c
+++ b/drivers/gpio/gpio-mlxbf2.c
@@ -191,7 +191,7 @@ static int mlxbf2_gpio_direction_input(struct gpio_chip *chip,
* if it is still enabled to be able to write to the ModeX registers.
*/
ret = mlxbf2_gpio_lock_acquire(gs);
- if (ret < 0)
+ if (ret)
return ret;
writel(BIT(offset), gs->gpio_io + YU_GPIO_MODE0_CLEAR);
@@ -219,7 +219,7 @@ static int mlxbf2_gpio_direction_output(struct gpio_chip *chip,
* ModeX registers.
*/
ret = mlxbf2_gpio_lock_acquire(gs);
- if (ret < 0)
+ if (ret)
return ret;
writel(BIT(offset), gs->gpio_io + YU_GPIO_MODE1_CLEAR);
diff --git a/drivers/hwmon/asus_rog_ryujin.c b/drivers/hwmon/asus_rog_ryujin.c
index e5e93a20723c..26387286a5c6 100644
--- a/drivers/hwmon/asus_rog_ryujin.c
+++ b/drivers/hwmon/asus_rog_ryujin.c
@@ -198,7 +198,7 @@ static int rog_ryujin_get_status(struct rog_ryujin_data *priv)
{
int ret = mutex_lock_interruptible(&priv->status_report_request_mutex);
- if (ret < 0)
+ if (ret)
return ret;
if (!time_after(jiffies, priv->updated + msecs_to_jiffies(STATUS_VALIDITY))) {
@@ -304,7 +304,7 @@ static int rog_ryujin_write_fixed_duty(struct rog_ryujin_data *priv, int channel
* together, then write back with one of them modified.
*/
ret = mutex_lock_interruptible(&priv->status_report_request_mutex);
- if (ret < 0)
+ if (ret)
return ret;
ret =
rog_ryujin_execute_cmd(priv, get_cooler_duty_cmd, GET_CMD_LENGTH,
diff --git a/drivers/hwmon/gigabyte_waterforce.c b/drivers/hwmon/gigabyte_waterforce.c
index 27487e215bdd..43c3b300e11f 100644
--- a/drivers/hwmon/gigabyte_waterforce.c
+++ b/drivers/hwmon/gigabyte_waterforce.c
@@ -125,7 +125,7 @@ static int waterforce_get_status(struct waterforce_data *priv)
{
int ret = mutex_lock_interruptible(&priv->status_report_request_mutex);
- if (ret < 0)
+ if (ret)
return ret;
if (!time_after(jiffies, priv->updated + msecs_to_jiffies(STATUS_VALIDITY))) {
diff --git a/drivers/hwmon/nzxt-kraken3.c b/drivers/hwmon/nzxt-kraken3.c
index d00409bcab93..9a3be62fef62 100644
--- a/drivers/hwmon/nzxt-kraken3.c
+++ b/drivers/hwmon/nzxt-kraken3.c
@@ -251,7 +251,7 @@ static int kraken3_read_z53(struct kraken3_data *priv)
{
int ret = mutex_lock_interruptible(&priv->z53_status_request_lock);
- if (ret < 0)
+ if (ret)
return ret;
if (!time_after(jiffies, priv->updated + msecs_to_jiffies(STATUS_VALIDITY))) {
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 1378651735f6..cf84e7423bb6 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -3731,7 +3731,7 @@ static ssize_t add_target_store(struct device *dev,
scsi_host_get(target->scsi_host);
ret = mutex_lock_interruptible(&host->add_target_mutex);
- if (ret < 0)
+ if (ret)
goto put;
ret = srp_parse_options(target->net, buf, target);
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 5dfb4644446b..0557617daa75 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -3647,10 +3647,10 @@ static ssize_t srpt_tpg_attrib_use_srq_store(struct config_item *item,
return -EINVAL;
ret = mutex_lock_interruptible(&sdev->sdev_mutex);
- if (ret < 0)
+ if (ret)
return ret;
ret = mutex_lock_interruptible(&sport->mutex);
- if (ret < 0)
+ if (ret)
goto unlock_sdev;
enabled = sport->enabled;
/* Log out all initiator systems before changing 'use_srq'. */
diff --git a/drivers/leds/leds-blinkm.c b/drivers/leds/leds-blinkm.c
index 577497b9d426..79552b41f2c1 100644
--- a/drivers/leds/leds-blinkm.c
+++ b/drivers/leds/leds-blinkm.c
@@ -357,7 +357,7 @@ static int blinkm_transfer_hw(struct i2c_client *client, int cmd)
/* We start hardware transfers which are not to be
* mixed with other commands. Aquire a lock now. */
- if (mutex_lock_interruptible(&data->update_lock) < 0)
+ if (mutex_lock_interruptible(&data->update_lock))
return -EAGAIN;
/* switch cmd - usually write before reads */
diff --git a/drivers/media/dvb-frontends/bcm3510.c b/drivers/media/dvb-frontends/bcm3510.c
index d935fb10e620..f9f853e2ef80 100644
--- a/drivers/media/dvb-frontends/bcm3510.c
+++ b/drivers/media/dvb-frontends/bcm3510.c
@@ -225,7 +225,7 @@ static int bcm3510_do_hab_cmd(struct bcm3510_state *st, u8 cmd, u8 msgid, u8 *ob
dbufout(ob,olen+2,deb_hab);
deb_hab("\n");
- if (mutex_lock_interruptible(&st->hab_mutex) < 0)
+ if (mutex_lock_interruptible(&st->hab_mutex))
return -EAGAIN;
if ((ret = bcm3510_hab_send_request(st, ob, olen+2)) < 0 ||
diff --git a/drivers/media/dvb-frontends/dib0070.c b/drivers/media/dvb-frontends/dib0070.c
index 9a8e7cdd2a24..ddbea15d69bb 100644
--- a/drivers/media/dvb-frontends/dib0070.c
+++ b/drivers/media/dvb-frontends/dib0070.c
@@ -70,7 +70,7 @@ static u16 dib0070_read_reg(struct dib0070_state *state, u8 reg)
{
u16 ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return 0;
}
@@ -102,7 +102,7 @@ static int dib0070_write_reg(struct dib0070_state *state, u8 reg, u16 val)
{
int ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return -EINVAL;
}
diff --git a/drivers/media/dvb-frontends/dib0090.c b/drivers/media/dvb-frontends/dib0090.c
index 6cbbb351d545..de9bbdec07ab 100644
--- a/drivers/media/dvb-frontends/dib0090.c
+++ b/drivers/media/dvb-frontends/dib0090.c
@@ -201,7 +201,7 @@ static u16 dib0090_read_reg(struct dib0090_state *state, u8 reg)
{
u16 ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return 0;
}
@@ -233,7 +233,7 @@ static int dib0090_write_reg(struct dib0090_state *state, u32 reg, u16 val)
{
int ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return -EINVAL;
}
@@ -262,7 +262,7 @@ static u16 dib0090_fw_read_reg(struct dib0090_fw_state *state, u8 reg)
{
u16 ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return 0;
}
@@ -289,7 +289,7 @@ static int dib0090_fw_write_reg(struct dib0090_fw_state *state, u8 reg, u16 val)
{
int ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return -EINVAL;
}
diff --git a/drivers/media/dvb-frontends/dib7000m.c b/drivers/media/dvb-frontends/dib7000m.c
index fdb22f32e3a1..b5cab2df9478 100644
--- a/drivers/media/dvb-frontends/dib7000m.c
+++ b/drivers/media/dvb-frontends/dib7000m.c
@@ -77,7 +77,7 @@ static u16 dib7000m_read_word(struct dib7000m_state *state, u16 reg)
{
u16 ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return 0;
}
@@ -108,7 +108,7 @@ static int dib7000m_write_word(struct dib7000m_state *state, u16 reg, u16 val)
{
int ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return -EINVAL;
}
diff --git a/drivers/media/dvb-frontends/dib7000p.c b/drivers/media/dvb-frontends/dib7000p.c
index c5582d4fa5be..28c224a450cb 100644
--- a/drivers/media/dvb-frontends/dib7000p.c
+++ b/drivers/media/dvb-frontends/dib7000p.c
@@ -96,7 +96,7 @@ static u16 dib7000p_read_word(struct dib7000p_state *state, u16 reg)
{
u16 ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return 0;
}
@@ -126,7 +126,7 @@ static int dib7000p_write_word(struct dib7000p_state *state, u16 reg, u16 val)
{
int ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return -EINVAL;
}
diff --git a/drivers/media/dvb-frontends/dib8000.c b/drivers/media/dvb-frontends/dib8000.c
index 2f5165918163..cae8686042a8 100644
--- a/drivers/media/dvb-frontends/dib8000.c
+++ b/drivers/media/dvb-frontends/dib8000.c
@@ -150,7 +150,7 @@ static u16 dib8000_i2c_read16(struct i2c_device *i2c, u16 reg)
{.addr = i2c->addr >> 1, .flags = I2C_M_RD, .len = 2},
};
- if (mutex_lock_interruptible(i2c->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(i2c->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return 0;
}
@@ -197,7 +197,7 @@ static u16 dib8000_read_word(struct dib8000_state *state, u16 reg)
{
u16 ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return 0;
}
@@ -213,7 +213,7 @@ static u32 dib8000_read32(struct dib8000_state *state, u16 reg)
{
u16 rw[2];
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return 0;
}
@@ -231,7 +231,7 @@ static int dib8000_i2c_write16(struct i2c_device *i2c, u16 reg, u16 val)
struct i2c_msg msg = {.addr = i2c->addr >> 1, .flags = 0, .len = 4};
int ret = 0;
- if (mutex_lock_interruptible(i2c->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(i2c->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return -EINVAL;
}
@@ -252,7 +252,7 @@ static int dib8000_write_word(struct dib8000_state *state, u16 reg, u16 val)
{
int ret;
- if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&state->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return -EINVAL;
}
diff --git a/drivers/media/dvb-frontends/dib9000.c b/drivers/media/dvb-frontends/dib9000.c
index 83cf6eadd49c..e71b3670ba1e 100644
--- a/drivers/media/dvb-frontends/dib9000.c
+++ b/drivers/media/dvb-frontends/dib9000.c
@@ -444,7 +444,7 @@ static int dib9000_risc_mem_read(struct dib9000_state *state, u8 cmd, u8 * b, u1
if (!state->platform.risc.fw_is_running)
return -EIO;
- if (mutex_lock_interruptible(&state->platform.risc.mem_lock) < 0) {
+ if (mutex_lock_interruptible(&state->platform.risc.mem_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
@@ -460,7 +460,7 @@ static int dib9000_risc_mem_write(struct dib9000_state *state, u8 cmd, const u8
if (!state->platform.risc.fw_is_running)
return -EIO;
- if (mutex_lock_interruptible(&state->platform.risc.mem_lock) < 0) {
+ if (mutex_lock_interruptible(&state->platform.risc.mem_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
@@ -535,7 +535,7 @@ static int dib9000_mbx_send_attr(struct dib9000_state *state, u8 id, u16 * data,
if (!state->platform.risc.fw_is_running)
return -EINVAL;
- if (mutex_lock_interruptible(&state->platform.risc.mbx_if_lock) < 0) {
+ if (mutex_lock_interruptible(&state->platform.risc.mbx_if_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
@@ -597,7 +597,7 @@ static u8 dib9000_mbx_read(struct dib9000_state *state, u16 * data, u8 risc_id,
if (!state->platform.risc.fw_is_running)
return 0;
- if (mutex_lock_interruptible(&state->platform.risc.mbx_if_lock) < 0) {
+ if (mutex_lock_interruptible(&state->platform.risc.mbx_if_lock)) {
dprintk("could not get the lock\n");
return 0;
}
@@ -709,7 +709,7 @@ static int dib9000_mbx_process(struct dib9000_state *state, u16 attr)
if (!state->platform.risc.fw_is_running)
return -1;
- if (mutex_lock_interruptible(&state->platform.risc.mbx_lock) < 0) {
+ if (mutex_lock_interruptible(&state->platform.risc.mbx_lock)) {
dprintk("could not get the lock\n");
return -1;
}
@@ -1194,7 +1194,7 @@ static int dib9000_fw_get_channel(struct dvb_frontend *fe)
struct dibDVBTChannel *ch;
int ret = 0;
- if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
+ if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
@@ -1679,7 +1679,7 @@ static int dib9000_fw_component_bus_xfer(struct i2c_adapter *i2c_adap, struct i2
p[12] = 0;
}
- if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
+ if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock)) {
dprintk("could not get the lock\n");
return 0;
}
@@ -1790,7 +1790,7 @@ int dib9000_fw_pid_filter_ctrl(struct dvb_frontend *fe, u8 onoff)
return 0;
}
- if (mutex_lock_interruptible(&state->demod_lock) < 0) {
+ if (mutex_lock_interruptible(&state->demod_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
@@ -1825,7 +1825,7 @@ int dib9000_fw_pid_filter(struct dvb_frontend *fe, u8 id, u16 pid, u8 onoff)
return 0;
}
- if (mutex_lock_interruptible(&state->demod_lock) < 0) {
+ if (mutex_lock_interruptible(&state->demod_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
@@ -1871,7 +1871,7 @@ static int dib9000_sleep(struct dvb_frontend *fe)
u8 index_frontend;
int ret = 0;
- if (mutex_lock_interruptible(&state->demod_lock) < 0) {
+ if (mutex_lock_interruptible(&state->demod_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
@@ -1902,7 +1902,7 @@ static int dib9000_get_frontend(struct dvb_frontend *fe,
int ret = 0;
if (state->get_frontend_internal == 0) {
- if (mutex_lock_interruptible(&state->demod_lock) < 0) {
+ if (mutex_lock_interruptible(&state->demod_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
@@ -2009,7 +2009,7 @@ static int dib9000_set_frontend(struct dvb_frontend *fe)
}
state->pid_ctrl_index = -1; /* postpone the pid filtering cmd */
- if (mutex_lock_interruptible(&state->demod_lock) < 0) {
+ if (mutex_lock_interruptible(&state->demod_lock)) {
dprintk("could not get the lock\n");
return 0;
}
@@ -2172,7 +2172,7 @@ static int dib9000_read_status(struct dvb_frontend *fe, enum fe_status *stat)
u8 index_frontend;
u16 lock = 0, lock_slave = 0;
- if (mutex_lock_interruptible(&state->demod_lock) < 0) {
+ if (mutex_lock_interruptible(&state->demod_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
@@ -2205,11 +2205,11 @@ static int dib9000_read_ber(struct dvb_frontend *fe, u32 * ber)
u16 *c;
int ret = 0;
- if (mutex_lock_interruptible(&state->demod_lock) < 0) {
+ if (mutex_lock_interruptible(&state->demod_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
- if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
+ if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock)) {
dprintk("could not get the lock\n");
ret = -EINTR;
goto error;
@@ -2240,7 +2240,7 @@ static int dib9000_read_signal_strength(struct dvb_frontend *fe, u16 * strength)
u16 val;
int ret = 0;
- if (mutex_lock_interruptible(&state->demod_lock) < 0) {
+ if (mutex_lock_interruptible(&state->demod_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
@@ -2253,7 +2253,7 @@ static int dib9000_read_signal_strength(struct dvb_frontend *fe, u16 * strength)
*strength += val;
}
- if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
+ if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock)) {
dprintk("could not get the lock\n");
ret = -EINTR;
goto error;
@@ -2284,7 +2284,7 @@ static u32 dib9000_get_snr(struct dvb_frontend *fe)
u32 n, s, exp;
u16 val;
- if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
+ if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock)) {
dprintk("could not get the lock\n");
return 0;
}
@@ -2323,7 +2323,7 @@ static int dib9000_read_snr(struct dvb_frontend *fe, u16 * snr)
u8 index_frontend;
u32 snr_master;
- if (mutex_lock_interruptible(&state->demod_lock) < 0) {
+ if (mutex_lock_interruptible(&state->demod_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
@@ -2348,11 +2348,11 @@ static int dib9000_read_unc_blocks(struct dvb_frontend *fe, u32 * unc)
u16 *c = (u16 *)state->i2c_read_buffer;
int ret = 0;
- if (mutex_lock_interruptible(&state->demod_lock) < 0) {
+ if (mutex_lock_interruptible(&state->demod_lock)) {
dprintk("could not get the lock\n");
return -EINTR;
}
- if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock) < 0) {
+ if (mutex_lock_interruptible(&state->platform.risc.mem_mbx_lock)) {
dprintk("could not get the lock\n");
ret = -EINTR;
goto error;
diff --git a/drivers/media/dvb-frontends/dibx000_common.c b/drivers/media/dvb-frontends/dibx000_common.c
index 63a4c6a4afb5..1db6a1dbeb01 100644
--- a/drivers/media/dvb-frontends/dibx000_common.c
+++ b/drivers/media/dvb-frontends/dibx000_common.c
@@ -21,7 +21,7 @@ static int dibx000_write_word(struct dibx000_i2c_master *mst, u16 reg, u16 val)
{
int ret;
- if (mutex_lock_interruptible(&mst->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&mst->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return -EINVAL;
}
@@ -47,7 +47,7 @@ static u16 dibx000_read_word(struct dibx000_i2c_master *mst, u16 reg)
{
u16 ret;
- if (mutex_lock_interruptible(&mst->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&mst->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return 0;
}
@@ -296,7 +296,7 @@ static int dibx000_i2c_gated_gpio67_xfer(struct i2c_adapter *i2c_adap,
dibx000_i2c_select_interface(mst, DIBX000_I2C_INTERFACE_GPIO_6_7);
- if (mutex_lock_interruptible(&mst->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&mst->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return -EINVAL;
}
@@ -343,7 +343,7 @@ static int dibx000_i2c_gated_tuner_xfer(struct i2c_adapter *i2c_adap,
dibx000_i2c_select_interface(mst, DIBX000_I2C_INTERFACE_TUNER);
- if (mutex_lock_interruptible(&mst->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&mst->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return -EINVAL;
}
@@ -440,7 +440,7 @@ int dibx000_init_i2c_master(struct dibx000_i2c_master *mst, u16 device_rev,
int ret;
mutex_init(&mst->i2c_buffer_lock);
- if (mutex_lock_interruptible(&mst->i2c_buffer_lock) < 0) {
+ if (mutex_lock_interruptible(&mst->i2c_buffer_lock)) {
dprintk("could not acquire lock\n");
return -EINVAL;
}
diff --git a/drivers/media/usb/dvb-usb-v2/af9035.c b/drivers/media/usb/dvb-usb-v2/af9035.c
index 218f712f56b1..b873e39dbbbe 100644
--- a/drivers/media/usb/dvb-usb-v2/af9035.c
+++ b/drivers/media/usb/dvb-usb-v2/af9035.c
@@ -271,7 +271,7 @@ static int af9035_i2c_master_xfer(struct i2c_adapter *adap,
struct state *state = d_to_priv(d);
int ret;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
/*
diff --git a/drivers/media/usb/dvb-usb-v2/anysee.c b/drivers/media/usb/dvb-usb-v2/anysee.c
index bea12cdc85e8..a5b2832f0a24 100644
--- a/drivers/media/usb/dvb-usb-v2/anysee.c
+++ b/drivers/media/usb/dvb-usb-v2/anysee.c
@@ -188,7 +188,7 @@ static int anysee_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
int ret = 0, inc, i = 0;
u8 buf[52]; /* 4 + 48 (I2C WR USB command header + I2C WR max) */
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
while (i < num) {
diff --git a/drivers/media/usb/dvb-usb-v2/au6610.c b/drivers/media/usb/dvb-usb-v2/au6610.c
index be223fc8aa14..016f37c0bb70 100644
--- a/drivers/media/usb/dvb-usb-v2/au6610.c
+++ b/drivers/media/usb/dvb-usb-v2/au6610.c
@@ -89,7 +89,7 @@ static int au6610_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
if (num > 2)
return -EINVAL;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
for (i = 0; i < num; i++) {
diff --git a/drivers/media/usb/dvb-usb-v2/az6007.c b/drivers/media/usb/dvb-usb-v2/az6007.c
index 2410054ddb2c..24eb74f521e5 100644
--- a/drivers/media/usb/dvb-usb-v2/az6007.c
+++ b/drivers/media/usb/dvb-usb-v2/az6007.c
@@ -128,7 +128,7 @@ static int az6007_read(struct dvb_usb_device *d, u8 req, u16 value,
struct az6007_device_state *st = d->priv;
int ret;
- if (mutex_lock_interruptible(&st->mutex) < 0)
+ if (mutex_lock_interruptible(&st->mutex))
return -EAGAIN;
ret = __az6007_read(d->udev, req, value, index, b, blen);
@@ -175,7 +175,7 @@ static int az6007_write(struct dvb_usb_device *d, u8 req, u16 value,
struct az6007_device_state *st = d->priv;
int ret;
- if (mutex_lock_interruptible(&st->mutex) < 0)
+ if (mutex_lock_interruptible(&st->mutex))
return -EAGAIN;
ret = __az6007_write(d->udev, req, value, index, b, blen);
@@ -752,7 +752,7 @@ static int az6007_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[],
int length;
u8 req, addr;
- if (mutex_lock_interruptible(&st->mutex) < 0)
+ if (mutex_lock_interruptible(&st->mutex))
return -EAGAIN;
for (i = 0; i < num; i++) {
diff --git a/drivers/media/usb/dvb-usb-v2/ce6230.c b/drivers/media/usb/dvb-usb-v2/ce6230.c
index d3b5cb4a24da..615c6b9f4b75 100644
--- a/drivers/media/usb/dvb-usb-v2/ce6230.c
+++ b/drivers/media/usb/dvb-usb-v2/ce6230.c
@@ -94,7 +94,7 @@ static int ce6230_i2c_master_xfer(struct i2c_adapter *adap,
memset(&req, 0, sizeof(req));
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
while (i < num) {
diff --git a/drivers/media/usb/dvb-usb-v2/dvbsky.c b/drivers/media/usb/dvb-usb-v2/dvbsky.c
index 1221c924312a..bfe05efdd1e8 100644
--- a/drivers/media/usb/dvb-usb-v2/dvbsky.c
+++ b/drivers/media/usb/dvb-usb-v2/dvbsky.c
@@ -103,7 +103,7 @@ static int dvbsky_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
int ret = 0;
u8 ibuf[64], obuf[64];
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
if (num > 2) {
diff --git a/drivers/media/usb/dvb-usb-v2/ec168.c b/drivers/media/usb/dvb-usb-v2/ec168.c
index 0e4773fc025c..5cbafdc8e0aa 100644
--- a/drivers/media/usb/dvb-usb-v2/ec168.c
+++ b/drivers/media/usb/dvb-usb-v2/ec168.c
@@ -109,7 +109,7 @@ static int ec168_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
if (num > 2)
return -EINVAL;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
while (i < num) {
diff --git a/drivers/media/usb/dvb-usb-v2/lmedm04.c b/drivers/media/usb/dvb-usb-v2/lmedm04.c
index f0537b741d13..2a7db30a50c6 100644
--- a/drivers/media/usb/dvb-usb-v2/lmedm04.c
+++ b/drivers/media/usb/dvb-usb-v2/lmedm04.c
@@ -147,7 +147,7 @@ static int lme2510_usb_talk(struct dvb_usb_device *d,
return -EINVAL;
ret = mutex_lock_interruptible(&d->usb_mutex);
- if (ret < 0)
+ if (ret)
return -EAGAIN;
memcpy(st->usb_buffer, wbuf, wlen);
diff --git a/drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c b/drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c
index 100a1052dcbc..2804c6dc27c1 100644
--- a/drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c
+++ b/drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c
@@ -804,7 +804,7 @@ int mxl111sf_i2c_xfer(struct i2c_adapter *adap,
int hwi2c = (state->chip_rev > MXL111SF_V6);
int i, ret;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
for (i = 0; i < num; i++) {
diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
index f7884bb56fcc..1bb5453bcbd7 100644
--- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
+++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
@@ -166,7 +166,7 @@ static int rtl28xxu_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
* where write is more than one byte.
*/
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
if (num == 2 && !(msg[0].flags & I2C_M_RD) &&
diff --git a/drivers/media/usb/dvb-usb/af9005.c b/drivers/media/usb/dvb-usb/af9005.c
index 13604e6acdb8..69fd71e0f7bd 100644
--- a/drivers/media/usb/dvb-usb/af9005.c
+++ b/drivers/media/usb/dvb-usb/af9005.c
@@ -407,7 +407,7 @@ static int af9005_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
u8 reg, addr;
u8 *value;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
if (num > 2)
diff --git a/drivers/media/usb/dvb-usb/az6027.c b/drivers/media/usb/dvb-usb/az6027.c
index 2bc27710427d..4bef1850b598 100644
--- a/drivers/media/usb/dvb-usb/az6027.c
+++ b/drivers/media/usb/dvb-usb/az6027.c
@@ -962,7 +962,7 @@ static int az6027_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int n
if (!data)
return -ENOMEM;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0) {
+ if (mutex_lock_interruptible(&d->i2c_mutex)) {
kfree(data);
return -EAGAIN;
}
diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c
index 1d98d3465e28..23f7931ccd95 100644
--- a/drivers/media/usb/dvb-usb/cxusb.c
+++ b/drivers/media/usb/dvb-usb/cxusb.c
@@ -183,7 +183,7 @@ static int cxusb_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
int ret;
int i;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
for (i = 0; i < num; i++) {
diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c
index 1caabb51ea47..38fae706a7ff 100644
--- a/drivers/media/usb/dvb-usb/dib0700_core.c
+++ b/drivers/media/usb/dvb-usb/dib0700_core.c
@@ -24,7 +24,7 @@ int dib0700_get_version(struct dvb_usb_device *d, u32 *hwversion,
struct dib0700_state *st = d->priv;
int ret;
- if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
+ if (mutex_lock_interruptible(&d->usb_mutex)) {
err("could not acquire lock");
return -EINTR;
}
@@ -110,7 +110,7 @@ int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_
struct dib0700_state *st = d->priv;
int ret;
- if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
+ if (mutex_lock_interruptible(&d->usb_mutex)) {
err("could not acquire lock");
return -EINTR;
}
@@ -131,7 +131,7 @@ static int dib0700_set_usb_xfer_len(struct dvb_usb_device *d, u16 nb_ts_packets)
int ret;
if (st->fw_version >= 0x10201) {
- if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
+ if (mutex_lock_interruptible(&d->usb_mutex)) {
err("could not acquire lock");
return -EINTR;
}
@@ -171,7 +171,7 @@ static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg,
/* Ensure nobody else hits the i2c bus while we're sending our
sequence of messages, (such as the remote control thread) */
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EINTR;
for (i = 0; i < num; i++) {
@@ -229,7 +229,7 @@ static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg,
} else {
/* Write request */
- if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
+ if (mutex_lock_interruptible(&d->usb_mutex)) {
err("could not acquire lock");
result = -EINTR;
goto unlock;
@@ -286,9 +286,9 @@ static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
struct dib0700_state *st = d->priv;
int i, len, result;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EINTR;
- if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
+ if (mutex_lock_interruptible(&d->usb_mutex)) {
err("could not acquire lock");
mutex_unlock(&d->i2c_mutex);
return -EINTR;
@@ -404,7 +404,7 @@ static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
struct dib0700_state *st = d->priv;
int ret;
- if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
+ if (mutex_lock_interruptible(&d->usb_mutex)) {
err("could not acquire lock");
return -EINTR;
}
@@ -436,7 +436,7 @@ int dib0700_set_i2c_speed(struct dvb_usb_device *d, u16 scl_kHz)
if (scl_kHz == 0)
return -EINVAL;
- if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
+ if (mutex_lock_interruptible(&d->usb_mutex)) {
err("could not acquire lock");
return -EINTR;
}
@@ -641,7 +641,7 @@ int dib0700_change_protocol(struct rc_dev *rc, u64 *rc_proto)
struct dib0700_state *st = d->priv;
int new_proto, ret;
- if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
+ if (mutex_lock_interruptible(&d->usb_mutex)) {
err("could not acquire lock");
return -EINTR;
}
diff --git a/drivers/media/usb/dvb-usb/dibusb-common.c b/drivers/media/usb/dvb-usb/dibusb-common.c
index 20f1ef3393a5..6b7de78d0d71 100644
--- a/drivers/media/usb/dvb-usb/dibusb-common.c
+++ b/drivers/media/usb/dvb-usb/dibusb-common.c
@@ -181,7 +181,7 @@ static int dibusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num
struct dvb_usb_device *d = i2c_get_adapdata(adap);
int i;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
for (i = 0; i < num; i++) {
diff --git a/drivers/media/usb/dvb-usb/digitv.c b/drivers/media/usb/dvb-usb/digitv.c
index 32134be16914..8ea758176fda 100644
--- a/drivers/media/usb/dvb-usb/digitv.c
+++ b/drivers/media/usb/dvb-usb/digitv.c
@@ -56,7 +56,7 @@ static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num
struct dvb_usb_device *d = i2c_get_adapdata(adap);
int i;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
if (num > 2)
diff --git a/drivers/media/usb/dvb-usb/dtv5100.c b/drivers/media/usb/dvb-usb/dtv5100.c
index 56c9d521a34a..dace8196fb61 100644
--- a/drivers/media/usb/dvb-usb/dtv5100.c
+++ b/drivers/media/usb/dvb-usb/dtv5100.c
@@ -72,7 +72,7 @@ static int dtv5100_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
if (num > 2)
return -EINVAL;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
for (i = 0; i < num; i++) {
diff --git a/drivers/media/usb/dvb-usb/dvb-usb-urb.c b/drivers/media/usb/dvb-usb/dvb-usb-urb.c
index 2aabf90d8697..6a35a218d4de 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb-urb.c
+++ b/drivers/media/usb/dvb-usb/dvb-usb-urb.c
@@ -22,7 +22,8 @@ int dvb_usb_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf,
return -EINVAL;
}
- if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
+ ret = mutex_lock_interruptible(&d->usb_mutex);
+ if (ret)
return ret;
deb_xfer(">>> ");
diff --git a/drivers/media/usb/dvb-usb/dw2102.c b/drivers/media/usb/dvb-usb/dw2102.c
index 79e2ccf974c9..fea99192c627 100644
--- a/drivers/media/usb/dvb-usb/dw2102.c
+++ b/drivers/media/usb/dvb-usb/dw2102.c
@@ -121,7 +121,7 @@ static int dw2102_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[],
if (!d)
return -ENODEV;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
switch (num) {
@@ -216,7 +216,7 @@ static int dw2102_serit_i2c_transfer(struct i2c_adapter *adap,
if (!d)
return -ENODEV;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
switch (num) {
@@ -291,7 +291,7 @@ static int dw2102_earda_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg ms
if (!d)
return -ENODEV;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
switch (num) {
@@ -399,7 +399,7 @@ static int dw2104_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[], i
if (!d)
return -ENODEV;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
for (j = 0; j < num; j++) {
@@ -501,7 +501,7 @@ static int dw3101_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[],
if (!d)
return -ENODEV;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
switch (num) {
@@ -589,7 +589,7 @@ static int s6x0_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[],
if (!d)
return -ENODEV;
udev = d->udev;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
for (j = 0; j < num; j++) {
@@ -726,9 +726,9 @@ static int su3000_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[],
state = d->priv;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
- if (mutex_lock_interruptible(&d->data_mutex) < 0) {
+ if (mutex_lock_interruptible(&d->data_mutex)) {
mutex_unlock(&d->i2c_mutex);
return -EAGAIN;
}
diff --git a/drivers/media/usb/dvb-usb/gp8psk.c b/drivers/media/usb/dvb-usb/gp8psk.c
index 4cd21bb8805e..c0d617536127 100644
--- a/drivers/media/usb/dvb-usb/gp8psk.c
+++ b/drivers/media/usb/dvb-usb/gp8psk.c
@@ -35,7 +35,8 @@ static int gp8psk_usb_in_op(struct dvb_usb_device *d, u8 req, u16 value,
if (blen > sizeof(st->data))
return -EIO;
- if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
+ ret = mutex_lock_interruptible(&d->usb_mutex);
+ if (ret)
return ret;
while (ret >= 0 && ret != blen && try < 3) {
@@ -77,7 +78,8 @@ static int gp8psk_usb_out_op(struct dvb_usb_device *d, u8 req, u16 value,
if (blen > sizeof(st->data))
return -EIO;
- if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
+ ret = mutex_lock_interruptible(&d->usb_mutex);
+ if (ret)
return ret;
memcpy(st->data, b, blen);
diff --git a/drivers/media/usb/dvb-usb/m920x.c b/drivers/media/usb/dvb-usb/m920x.c
index a2054b1b100f..0536d3d7152a 100644
--- a/drivers/media/usb/dvb-usb/m920x.c
+++ b/drivers/media/usb/dvb-usb/m920x.c
@@ -252,7 +252,7 @@ static int m920x_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int nu
int i, j;
int ret = 0;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
for (i = 0; i < num; i++) {
diff --git a/drivers/media/usb/dvb-usb/opera1.c b/drivers/media/usb/dvb-usb/opera1.c
index 268f05fc8691..075c1153e2ab 100644
--- a/drivers/media/usb/dvb-usb/opera1.c
+++ b/drivers/media/usb/dvb-usb/opera1.c
@@ -92,7 +92,7 @@ static int opera1_usb_i2c_msgxfer(struct dvb_usb_device *dev, u16 addr,
info("no usb_device");
return -EINVAL;
}
- if (mutex_lock_interruptible(&dev->usb_mutex) < 0)
+ if (mutex_lock_interruptible(&dev->usb_mutex))
return -EAGAIN;
switch (addr>>1){
@@ -132,7 +132,7 @@ static int opera1_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
if (!d)
return -ENODEV;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
for (i = 0; i < num; i++) {
diff --git a/drivers/media/usb/dvb-usb/pctv452e.c b/drivers/media/usb/dvb-usb/pctv452e.c
index 2aab49003493..71e4503968a8 100644
--- a/drivers/media/usb/dvb-usb/pctv452e.c
+++ b/drivers/media/usb/dvb-usb/pctv452e.c
@@ -478,7 +478,7 @@ static int pctv452e_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msg,
struct dvb_usb_device *d = i2c_get_adapdata(adapter);
int i;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
for (i = 0; i < num; i++) {
@@ -623,7 +623,7 @@ static int pctv452e_read_mac_address(struct dvb_usb_device *d, u8 mac[6])
int ret;
ret = -EAGAIN;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
goto failed;
ret = pctv452e_i2c_msg(d, I2C_ADDR_24C16,
diff --git a/drivers/media/usb/dvb-usb/technisat-usb2.c b/drivers/media/usb/dvb-usb/technisat-usb2.c
index df90c6c5f3b9..265059be66e1 100644
--- a/drivers/media/usb/dvb-usb/technisat-usb2.c
+++ b/drivers/media/usb/dvb-usb/technisat-usb2.c
@@ -166,7 +166,7 @@ static int technisat_usb2_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg
/* Ensure nobody else hits the i2c bus while we're sending our
sequence of messages, (such as the remote control thread) */
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
for (i = 0; i < num; i++) {
@@ -259,7 +259,7 @@ static int technisat_usb2_set_led(struct dvb_usb_device *d, int red,
break;
}
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
@@ -280,7 +280,7 @@ static int technisat_usb2_set_led_timer(struct dvb_usb_device *d, u8 red, u8 gre
b[0] = 0;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
@@ -550,7 +550,7 @@ static int technisat_usb2_frontend_attach(struct dvb_usb_adapter *a)
if (a->fe_adap[0].fe->ops.init)
a->fe_adap[0].fe->ops.init(a->fe_adap[0].fe);
- if (mutex_lock_interruptible(&a->dev->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&a->dev->i2c_mutex))
return -EAGAIN;
ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
@@ -618,7 +618,7 @@ static int technisat_usb2_get_ir(struct dvb_usb_device *d)
buf[3] = MINIMUM_IR_BIT_TRANSITION_TICK_COUNT;
buf[4] = MAXIMUM_IR_BIT_TIME_TICK_COUNT;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
GET_IR_DATA_VENDOR_REQUEST,
diff --git a/drivers/media/usb/dvb-usb/ttusb2.c b/drivers/media/usb/dvb-usb/ttusb2.c
index 373ffa7f641e..3e0e4917f6a3 100644
--- a/drivers/media/usb/dvb-usb/ttusb2.c
+++ b/drivers/media/usb/dvb-usb/ttusb2.c
@@ -371,7 +371,7 @@ static int ttusb2_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num
static u8 obuf[60], ibuf[60];
int i, write_read, read;
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ if (mutex_lock_interruptible(&d->i2c_mutex))
return -EAGAIN;
if (num > 2)
diff --git a/drivers/media/usb/dvb-usb/vp702x.c b/drivers/media/usb/dvb-usb/vp702x.c
index 5b6740cbd1d1..3c513c3ac578 100644
--- a/drivers/media/usb/dvb-usb/vp702x.c
+++ b/drivers/media/usb/dvb-usb/vp702x.c
@@ -99,7 +99,8 @@ int vp702x_usb_inout_op(struct dvb_usb_device *d, u8 *o, int olen, u8 *i, int il
{
int ret;
- if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
+ ret = mutex_lock_interruptible(&d->usb_mutex);
+ if (ret)
return ret;
ret = vp702x_usb_out_op_unlocked(d, REQUEST_OUT, 0, 0, o, olen);
@@ -119,7 +120,7 @@ static int vp702x_usb_inout_cmd(struct dvb_usb_device *d, u8 cmd, u8 *o,
int buflen = max(olen + 2, ilen + 1);
ret = mutex_lock_interruptible(&st->buf_mutex);
- if (ret < 0)
+ if (ret)
return ret;
if (buflen > st->buf_len) {
diff --git a/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c b/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c
index 9e016b71aa91..7a25e823f1f5 100644
--- a/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c
+++ b/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c
@@ -143,7 +143,7 @@ static int ttusb_cmd(struct ttusb *ttusb, u8 *data, int len, int len_result)
int actual_len;
int err;
- if (mutex_lock_interruptible(&ttusb->semusb) < 0)
+ if (mutex_lock_interruptible(&ttusb->semusb))
return -EAGAIN;
if (debug >= 3)
@@ -236,7 +236,7 @@ static int master_xfer(struct i2c_adapter* adapter, struct i2c_msg *msg, int num
int i = 0;
int inc;
- if (mutex_lock_interruptible(&ttusb->semi2c) < 0)
+ if (mutex_lock_interruptible(&ttusb->semi2c))
return -EAGAIN;
while (i < num) {
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 4e58476d305e..043dceb77754 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -1392,7 +1392,7 @@ int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
int ret;
ret = mutex_lock_interruptible(&chain->ctrl_mutex);
- if (ret < 0)
+ if (ret)
return -ERESTARTSYS;
/* Check if the ctrl is a know class */
@@ -1453,7 +1453,7 @@ int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
return -EINVAL;
ret = mutex_lock_interruptible(&chain->ctrl_mutex);
- if (ret < 0)
+ if (ret)
return -ERESTARTSYS;
ctrl = uvc_find_control(chain, query_menu->id, &mapping);
@@ -1760,7 +1760,7 @@ static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
int ret;
ret = mutex_lock_interruptible(&handle->chain->ctrl_mutex);
- if (ret < 0)
+ if (ret)
return -ERESTARTSYS;
if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0) {
diff --git a/drivers/net/ethernet/mellanox/mlxsw/i2c.c b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
index f9f565c1036d..f1675908253c 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/i2c.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
@@ -426,7 +426,7 @@ mlxsw_i2c_cmd(struct device *dev, u16 opcode, u32 in_mod, size_t in_mbox_size,
reg_size = mlxsw_i2c_get_reg_size(in_mbox);
num = DIV_ROUND_UP(reg_size, mlxsw_i2c->block_size);
- if (mutex_lock_interruptible(&mlxsw_i2c->cmd.lock) < 0) {
+ if (mutex_lock_interruptible(&mlxsw_i2c->cmd.lock)) {
dev_err(&client->dev, "Could not acquire lock");
return -EINVAL;
}
@@ -445,7 +445,7 @@ mlxsw_i2c_cmd(struct device *dev, u16 opcode, u32 in_mod, size_t in_mbox_size,
reg_size = MLXSW_I2C_MAX_DATA_SIZE;
num = DIV_ROUND_UP(reg_size, mlxsw_i2c->block_size);
- if (mutex_lock_interruptible(&mlxsw_i2c->cmd.lock) < 0) {
+ if (mutex_lock_interruptible(&mlxsw_i2c->cmd.lock)) {
dev_err(&client->dev, "Could not acquire lock");
return -EINVAL;
}
diff --git a/drivers/net/usb/cdc_subset.c b/drivers/net/usb/cdc_subset.c
index f4a44f05c6ab..09e2c3bc1315 100644
--- a/drivers/net/usb/cdc_subset.c
+++ b/drivers/net/usb/cdc_subset.c
@@ -80,7 +80,7 @@ static void m5632_recover(struct usbnet *dev)
int r;
r = usb_lock_device_for_reset(udev, intf);
- if (r < 0)
+ if (r)
return;
usb_reset_device(udev);
diff --git a/drivers/net/wireless/intersil/p54/p54usb.c b/drivers/net/wireless/intersil/p54/p54usb.c
index cae47663b17b..a1c056612a83 100644
--- a/drivers/net/wireless/intersil/p54/p54usb.c
+++ b/drivers/net/wireless/intersil/p54/p54usb.c
@@ -455,7 +455,7 @@ static int p54u_device_reset(struct ieee80211_hw *dev)
if (lock) {
ret = usb_lock_device_for_reset(priv->udev, priv->intf);
- if (ret < 0) {
+ if (ret) {
dev_err(&priv->udev->dev, "(p54usb) unable to lock "
"device for reset (%d)!\n", ret);
return ret;
diff --git a/drivers/net/wireless/ti/wlcore/sysfs.c b/drivers/net/wireless/ti/wlcore/sysfs.c
index 7c57d4c8744a..037d7dba9800 100644
--- a/drivers/net/wireless/ti/wlcore/sysfs.c
+++ b/drivers/net/wireless/ti/wlcore/sysfs.c
@@ -97,7 +97,7 @@ static ssize_t wl1271_sysfs_read_fwlog(struct file *filp, struct kobject *kobj,
int ret;
ret = mutex_lock_interruptible(&wl->mutex);
- if (ret < 0)
+ if (ret)
return -ERESTARTSYS;
/* Check if the fwlog is still valid */
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 1fcb0f99695a..e4b823dbc996 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -6462,7 +6462,7 @@ static void tpacpi_brightness_checkpoint_nvram(void)
vdbg_printk(TPACPI_DBG_BRGHT,
"trying to checkpoint backlight level to NVRAM...\n");
- if (mutex_lock_killable(&brightness_mutex) < 0)
+ if (mutex_lock_killable(&brightness_mutex))
return;
if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
@@ -6565,7 +6565,7 @@ static int brightness_set(unsigned int value)
"set backlight level to %d\n", value);
res = mutex_lock_killable(&brightness_mutex);
- if (res < 0)
+ if (res)
return res;
switch (brightness_mode) {
@@ -6604,7 +6604,7 @@ static int brightness_get(struct backlight_device *bd)
int status, res;
res = mutex_lock_killable(&brightness_mutex);
- if (res < 0)
+ if (res)
return 0;
res = tpacpi_brightness_get_raw(&status);
@@ -7075,7 +7075,7 @@ static void tpacpi_volume_checkpoint_nvram(void)
else
ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
- if (mutex_lock_killable(&volume_mutex) < 0)
+ if (mutex_lock_killable(&volume_mutex))
return;
if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
@@ -7147,7 +7147,7 @@ static int __volume_set_mute_ec(const bool mute)
int rc;
u8 s, n;
- if (mutex_lock_killable(&volume_mutex) < 0)
+ if (mutex_lock_killable(&volume_mutex))
return -EINTR;
rc = volume_get_status_ec(&s);
@@ -7195,7 +7195,7 @@ static int __volume_set_volume_ec(const u8 vol)
if (vol > TP_EC_VOLUME_MAX)
return -EINVAL;
- if (mutex_lock_killable(&volume_mutex) < 0)
+ if (mutex_lock_killable(&volume_mutex))
return -EINTR;
rc = volume_get_status_ec(&s);
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 84d8de07b7ae..aff155682242 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -3176,7 +3176,7 @@ static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
int rc = 0;
/* We can really only handle one reset at a time */
- if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
+ if (mutex_lock_interruptible(&h->reset_mutex)) {
dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
return -EINTR;
}
diff --git a/drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c b/drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c
index 85322af62c23..2939b9666729 100644
--- a/drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c
+++ b/drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c
@@ -1175,7 +1175,7 @@ static int usb_gpib_init_module(struct usb_interface *interface)
int j, mask, rv;
rv = mutex_lock_interruptible(&minors_lock);
- if (rv < 0)
+ if (rv)
return rv;
if (!assigned_usb_minors) {
@@ -1513,7 +1513,7 @@ static ssize_t skel_do_read(struct usb_skel *dev, char *buffer, size_t count)
DIA_LOG(2, "restart with %zd %zd.\n", dev->bulk_in_filled, dev->bulk_in_copied);
rv = mutex_lock_interruptible(&dev->io_mutex);
- if (rv < 0)
+ if (rv)
return rv;
if (!dev->interface) { /* disconnect() was called */
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 449dbd216460..6f152d483123 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -965,7 +965,7 @@ static ssize_t iterate_tty_write(struct tty_ldisc *ld, struct tty_struct *tty,
ssize_t ret, written = 0;
ret = tty_write_lock(tty, file->f_flags & O_NDELAY);
- if (ret < 0)
+ if (ret)
return ret;
/*
@@ -1154,7 +1154,7 @@ int tty_send_xchar(struct tty_struct *tty, u8 ch)
return 0;
}
- if (tty_write_lock(tty, false) < 0)
+ if (tty_write_lock(tty, false))
return -ERESTARTSYS;
down_read(&tty->termios_rwsem);
@@ -2486,7 +2486,7 @@ static int send_break(struct tty_struct *tty, unsigned int duration)
return tty->ops->break_ctl(tty, duration);
/* Do the work ourselves */
- if (tty_write_lock(tty, false) < 0)
+ if (tty_write_lock(tty, false))
return -EINTR;
retval = tty->ops->break_ctl(tty, -1);
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 86ee39db013f..0f77547438d3 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -523,9 +523,8 @@ static ssize_t wdm_read
int i = 0;
struct wdm_device *desc = file->private_data;
-
rv = mutex_lock_interruptible(&desc->rlock); /*concurrent reads */
- if (rv < 0)
+ if (rv)
return -ERESTARTSYS;
cntr = READ_ONCE(desc->length);
diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index e2527faa6592..c197e81e0307 100644
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -849,7 +849,7 @@ static ssize_t usblp_read(struct file *file, char __user *buffer, size_t len, lo
return -EINVAL;
rv = usblp_rwait_and_lock(usblp, !!(file->f_flags & O_NONBLOCK));
- if (rv < 0)
+ if (rv)
return rv;
if (!usblp->present) {
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index d2b2787be409..137e1dd964d0 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1900,7 +1900,7 @@ static void __usb_queue_reset_device(struct work_struct *ws)
struct usb_device *udev = interface_to_usbdev(iface);
rc = usb_lock_device_for_reset(udev, iface);
- if (rc >= 0) {
+ if (rc == 0) {
usb_reset_device(udev);
usb_unlock_device(udev);
}
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 23f3cb1989f4..0cff7f540c3a 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -32,7 +32,7 @@ static ssize_t field##_show(struct device *dev, \
\
udev = to_usb_device(dev); \
rc = usb_lock_device_interruptible(udev); \
- if (rc < 0) \
+ if (rc) \
return -EINTR; \
actconfig = udev->actconfig; \
if (actconfig) \
@@ -58,7 +58,7 @@ static ssize_t bMaxPower_show(struct device *dev,
udev = to_usb_device(dev);
rc = usb_lock_device_interruptible(udev);
- if (rc < 0)
+ if (rc)
return -EINTR;
actconfig = udev->actconfig;
if (actconfig)
@@ -77,7 +77,7 @@ static ssize_t configuration_show(struct device *dev,
udev = to_usb_device(dev);
rc = usb_lock_device_interruptible(udev);
- if (rc < 0)
+ if (rc)
return -EINTR;
actconfig = udev->actconfig;
if (actconfig && actconfig->string)
@@ -100,7 +100,7 @@ static ssize_t bConfigurationValue_store(struct device *dev,
if (sscanf(buf, "%d", &config) != 1 || config < -1 || config > 255)
return -EINVAL;
rc = usb_lock_device_interruptible(udev);
- if (rc < 0)
+ if (rc)
return -EINTR;
value = usb_set_configuration(udev, config);
usb_unlock_device(udev);
@@ -130,7 +130,7 @@ static ssize_t name##_show(struct device *dev, \
\
udev = to_usb_device(dev); \
retval = usb_lock_device_interruptible(udev); \
- if (retval < 0) \
+ if (retval) \
return -EINTR; \
retval = sysfs_emit(buf, "%s\n", udev->name); \
usb_unlock_device(udev); \
@@ -279,7 +279,7 @@ static ssize_t avoid_reset_quirk_store(struct device *dev,
if (kstrtobool(buf, &val) != 0)
return -EINVAL;
rc = usb_lock_device_interruptible(udev);
- if (rc < 0)
+ if (rc)
return -EINTR;
if (val)
udev->quirks |= USB_QUIRK_RESET;
@@ -334,7 +334,7 @@ static ssize_t persist_store(struct device *dev, struct device_attribute *attr,
return -EINVAL;
rc = usb_lock_device_interruptible(udev);
- if (rc < 0)
+ if (rc)
return -EINTR;
udev->persist_enabled = !!value;
usb_unlock_device(udev);
@@ -460,7 +460,7 @@ static ssize_t level_store(struct device *dev, struct device_attribute *attr,
len = cp - buf;
rv = usb_lock_device_interruptible(udev);
- if (rv < 0)
+ if (rv)
return -EINTR;
if (len == sizeof on_string - 1 &&
@@ -502,7 +502,7 @@ static ssize_t usb2_hardware_lpm_store(struct device *dev,
int ret;
ret = usb_lock_device_interruptible(udev);
- if (ret < 0)
+ if (ret)
return -EINTR;
ret = kstrtobool(buf, &value);
@@ -579,7 +579,7 @@ static ssize_t usb3_hardware_lpm_u1_show(struct device *dev,
int rc;
rc = usb_lock_device_interruptible(udev);
- if (rc < 0)
+ if (rc)
return -EINTR;
if (udev->usb3_lpm_u1_enabled)
@@ -601,7 +601,7 @@ static ssize_t usb3_hardware_lpm_u2_show(struct device *dev,
int rc;
rc = usb_lock_device_interruptible(udev);
- if (rc < 0)
+ if (rc)
return -EINTR;
if (udev->usb3_lpm_u2_enabled)
@@ -1188,7 +1188,7 @@ static ssize_t supports_autosuspend_show(struct device *dev,
int s;
s = device_lock_interruptible(dev);
- if (s < 0)
+ if (s)
return -EINTR;
/* Devices will be autosuspended even when an interface isn't claimed */
s = (!dev->driver || to_usb_driver(dev->driver)->supports_autosuspend);
diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index b6a30d88a800..c4c9ad6d8596 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -313,7 +313,7 @@ get_ready_ep (unsigned f_flags, struct ep_data *epdata, bool is_write)
}
val = mutex_lock_interruptible(&epdata->lock);
- if (val < 0)
+ if (val)
return val;
switch (epdata->state) {
@@ -386,7 +386,7 @@ ep_release (struct inode *inode, struct file *fd)
int value;
value = mutex_lock_interruptible(&data->lock);
- if (value < 0)
+ if (value)
return value;
/* clean up if this can be reopened */
@@ -406,7 +406,8 @@ static long ep_ioctl(struct file *fd, unsigned code, unsigned long value)
struct ep_data *data = fd->private_data;
int status;
- if ((status = get_ready_ep (fd->f_flags, data, false)) < 0)
+ status = get_ready_ep(fd->f_flags, data, false);
+ if (status)
return status;
spin_lock_irq (&data->dev->lock);
@@ -587,7 +588,8 @@ ep_read_iter(struct kiocb *iocb, struct iov_iter *to)
ssize_t value;
char *buf;
- if ((value = get_ready_ep(file->f_flags, epdata, false)) < 0)
+ value = get_ready_ep(file->f_flags, epdata, false);
+ if (value)
return value;
/* halt any endpoint by doing a "wrong direction" i/o call */
@@ -647,7 +649,8 @@ ep_write_iter(struct kiocb *iocb, struct iov_iter *from)
ssize_t value;
char *buf;
- if ((value = get_ready_ep(file->f_flags, epdata, true)) < 0)
+ value = get_ready_ep(file->f_flags, epdata, true);
+ if (value)
return value;
configured = epdata->state == STATE_EP_ENABLED;
diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c
index 70dff0db5354..b0a1357c7941 100644
--- a/drivers/usb/misc/yurex.c
+++ b/drivers/usb/misc/yurex.c
@@ -442,7 +442,7 @@ static ssize_t yurex_write(struct file *file, const char __user *user_buffer,
goto error;
retval = mutex_lock_interruptible(&dev->io_mutex);
- if (retval < 0)
+ if (retval)
return -EINTR;
if (dev->disconnected) { /* already disconnected */
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index e6bc8ecaecbb..52b85acaf756 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -1427,7 +1427,7 @@ int usb_stor_port_reset(struct us_data *us)
return -EPERM;
result = usb_lock_device_for_reset(us->pusb_dev, us->pusb_intf);
- if (result < 0)
+ if (result)
usb_stor_dbg(us, "unable to lock device for reset: %d\n",
result);
else {
diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c
index 900a64ad25e4..dba27776a037 100644
--- a/drivers/usb/usb-skeleton.c
+++ b/drivers/usb/usb-skeleton.c
@@ -235,7 +235,7 @@ static ssize_t skel_read(struct file *file, char *buffer, size_t count,
/* no concurrent readers */
rv = mutex_lock_interruptible(&dev->io_mutex);
- if (rv < 0)
+ if (rv)
return rv;
if (dev->disconnected) { /* disconnect() was called */
diff --git a/drivers/usb/usbip/stub_dev.c b/drivers/usb/usbip/stub_dev.c
index ce625b1ce9a5..2139930f25cb 100644
--- a/drivers/usb/usbip/stub_dev.c
+++ b/drivers/usb/usbip/stub_dev.c
@@ -218,7 +218,7 @@ static void stub_device_reset(struct usbip_device *ud)
dev_dbg(&udev->dev, "device reset");
ret = usb_lock_device_for_reset(udev, NULL);
- if (ret < 0) {
+ if (ret) {
dev_err(&udev->dev, "lock for reset\n");
spin_lock_irq(&ud->lock);
ud->status = SDEV_ST_ERROR;
diff --git a/drivers/usb/usbip/stub_rx.c b/drivers/usb/usbip/stub_rx.c
index 9aa30ef76f3b..cecc3972c64a 100644
--- a/drivers/usb/usbip/stub_rx.c
+++ b/drivers/usb/usbip/stub_rx.c
@@ -156,7 +156,7 @@ static int tweak_reset_device_cmd(struct urb *urb)
dev_info(&urb->dev->dev, "usb_queue_reset_device\n");
err = usb_lock_device_for_reset(sdev->udev, NULL);
- if (err < 0) {
+ if (err) {
dev_err(&urb->dev->dev, "could not obtain lock to reset device\n");
return err;
}
diff --git a/drivers/w1/masters/omap_hdq.c b/drivers/w1/masters/omap_hdq.c
index 69b1d145657a..f285368d3961 100644
--- a/drivers/w1/masters/omap_hdq.c
+++ b/drivers/w1/masters/omap_hdq.c
@@ -135,7 +135,7 @@ static int hdq_write_byte(struct hdq_data *hdq_data, u8 val, u8 *status)
u8 tmp_status;
ret = mutex_lock_interruptible(&hdq_data->hdq_mutex);
- if (ret < 0) {
+ if (ret) {
ret = -EINTR;
goto rtn;
}
@@ -235,7 +235,7 @@ static int omap_hdq_break(struct hdq_data *hdq_data)
u8 tmp_status;
ret = mutex_lock_interruptible(&hdq_data->hdq_mutex);
- if (ret < 0) {
+ if (ret) {
dev_dbg(hdq_data->dev, "Could not acquire mutex\n");
ret = -EINTR;
goto rtn;
@@ -305,7 +305,7 @@ static int hdq_read_byte(struct hdq_data *hdq_data, u8 *val)
u8 status;
ret = mutex_lock_interruptible(&hdq_data->hdq_mutex);
- if (ret < 0) {
+ if (ret) {
ret = -EINTR;
goto rtn;
}
@@ -374,7 +374,7 @@ static u8 omap_w1_triplet(void *_hdq, u8 bdir)
}
err = mutex_lock_interruptible(&hdq_data->hdq_mutex);
- if (err < 0) {
+ if (err) {
dev_dbg(hdq_data->dev, "Could not acquire mutex\n");
goto rtn;
}
diff --git a/fs/afs/validation.c b/fs/afs/validation.c
index 0ba8336c9025..f7ff7a5b1b99 100644
--- a/fs/afs/validation.c
+++ b/fs/afs/validation.c
@@ -420,7 +420,7 @@ int afs_validate(struct afs_vnode *vnode, struct key *key)
if (volume->cb_expires_at <= deadline ||
atomic_read(&volume->cb_v_check) != atomic_read(&volume->cb_v_break)) {
ret = mutex_lock_interruptible(&volume->cb_check_lock);
- if (ret < 0)
+ if (ret)
goto error_unlock;
locked_vol = true;
}
diff --git a/fs/afs/vl_alias.c b/fs/afs/vl_alias.c
index f9e76b604f31..e1c6a1df2745 100644
--- a/fs/afs/vl_alias.c
+++ b/fs/afs/vl_alias.c
@@ -188,7 +188,7 @@ static int afs_query_for_alias(struct afs_cell *cell, struct key *key)
_enter("%s", cell->name);
- if (mutex_lock_interruptible(&cell->net->proc_cells_lock) < 0)
+ if (mutex_lock_interruptible(&cell->net->proc_cells_lock))
return -ERESTARTSYS;
hlist_for_each_entry(p, &cell->net->proc_cells, proc_link) {
@@ -204,7 +204,7 @@ static int afs_query_for_alias(struct afs_cell *cell, struct key *key)
if (afs_query_for_alias_one(cell, key, p) != 0)
goto is_alias;
- if (mutex_lock_interruptible(&cell->net->proc_cells_lock) < 0) {
+ if (mutex_lock_interruptible(&cell->net->proc_cells_lock)) {
afs_unuse_cell(cell->net, p, afs_cell_trace_unuse_check_alias);
return -ERESTARTSYS;
}
@@ -318,7 +318,7 @@ int afs_cell_detect_alias(struct afs_cell *cell, struct key *key)
struct afs_net *net = cell->net;
int ret;
- if (mutex_lock_interruptible(&net->cells_alias_lock) < 0)
+ if (mutex_lock_interruptible(&net->cells_alias_lock))
return -ERESTARTSYS;
if (test_bit(AFS_CELL_FL_CHECK_ALIAS, &cell->flags)) {
diff --git a/fs/fsopen.c b/fs/fsopen.c
index 094a7f510edf..ec97bc018090 100644
--- a/fs/fsopen.c
+++ b/fs/fsopen.c
@@ -33,7 +33,7 @@ static ssize_t fscontext_read(struct file *file,
int index, n;
ret = mutex_lock_interruptible(&fc->uapi_mutex);
- if (ret < 0)
+ if (ret)
return ret;
if (log->head == log->tail) {
diff --git a/fs/namespace.c b/fs/namespace.c
index a3ed3f2980cb..dce085d51944 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -4198,7 +4198,7 @@ SYSCALL_DEFINE3(fsmount, int, fs_fd, unsigned int, flags,
fc = fd_file(f)->private_data;
ret = mutex_lock_interruptible(&fc->uapi_mutex);
- if (ret < 0)
+ if (ret)
return ret;
/* There must be a valid superblock or we can't mount it */
diff --git a/fs/orangefs/devorangefs-req.c b/fs/orangefs/devorangefs-req.c
index 33ee8cb32f83..faf655549aff 100644
--- a/fs/orangefs/devorangefs-req.c
+++ b/fs/orangefs/devorangefs-req.c
@@ -637,7 +637,7 @@ static long dispatch_ioctl_command(unsigned int command, unsigned long arg)
* mounts to fail)
*/
ret = mutex_lock_interruptible(&orangefs_request_mutex);
- if (ret < 0)
+ if (ret)
return ret;
gossip_debug(GOSSIP_DEV_DEBUG,
"%s: priority remount in progress\n",
diff --git a/fs/proc/base.c b/fs/proc/base.c
index cd89e956c322..630fad43d4d3 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2841,7 +2841,7 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
/* Guard against adverse ptrace interaction */
rv = mutex_lock_interruptible(¤t->signal->cred_guard_mutex);
- if (rv < 0)
+ if (rv)
goto out_free;
rv = security_setprocattr(PROC_I(inode)->op.lsmid,
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index f59381c4a2ff..84c9b42f11ef 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -1603,7 +1603,7 @@ static long seccomp_notify_send(struct seccomp_filter *filter,
return -EINVAL;
ret = mutex_lock_interruptible(&filter->notify_lock);
- if (ret < 0)
+ if (ret)
return ret;
knotif = find_notification(filter, resp.id);
@@ -1643,7 +1643,7 @@ static long seccomp_notify_id_valid(struct seccomp_filter *filter,
return -EFAULT;
ret = mutex_lock_interruptible(&filter->notify_lock);
- if (ret < 0)
+ if (ret)
return ret;
knotif = find_notification(filter, id);
@@ -1665,7 +1665,7 @@ static long seccomp_notify_set_flags(struct seccomp_filter *filter,
return -EINVAL;
ret = mutex_lock_interruptible(&filter->notify_lock);
- if (ret < 0)
+ if (ret)
return ret;
filter->notif->flags = flags;
mutex_unlock(&filter->notify_lock);
@@ -1711,7 +1711,7 @@ static long seccomp_notify_addfd(struct seccomp_filter *filter,
init_completion(&kaddfd.completion);
ret = mutex_lock_interruptible(&filter->notify_lock);
- if (ret < 0)
+ if (ret)
goto out;
knotif = find_notification(filter, addfd.id);
@@ -1824,7 +1824,7 @@ static __poll_t seccomp_notify_poll(struct file *file,
poll_wait(file, &filter->wqh, poll_tab);
- if (mutex_lock_interruptible(&filter->notify_lock) < 0)
+ if (mutex_lock_interruptible(&filter->notify_lock))
return EPOLLERR;
list_for_each_entry(cur, &filter->notif->notifications, list) {
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index c6ed68604136..9f81f4f30fca 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -1916,7 +1916,7 @@ static void *kmemleak_seq_start(struct seq_file *seq, loff_t *pos)
int err;
err = mutex_lock_interruptible(&scan_mutex);
- if (err < 0)
+ if (err)
return ERR_PTR(err);
rcu_read_lock();
@@ -2074,7 +2074,7 @@ static ssize_t kmemleak_write(struct file *file, const char __user *user_buf,
buf[buf_size] = 0;
ret = mutex_lock_interruptible(&scan_mutex);
- if (ret < 0)
+ if (ret)
return ret;
if (strncmp(buf, "clear", 5) == 0) {
diff --git a/net/rxrpc/recvmsg.c b/net/rxrpc/recvmsg.c
index 32cd5f1d541d..bb385070a729 100644
--- a/net/rxrpc/recvmsg.c
+++ b/net/rxrpc/recvmsg.c
@@ -368,7 +368,7 @@ int rxrpc_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
if (flags & MSG_DONTWAIT)
goto error_requeue_call;
ret = -ERESTARTSYS;
- if (mutex_lock_interruptible(&call->user_mutex) < 0)
+ if (mutex_lock_interruptible(&call->user_mutex))
goto error_requeue_call;
}
diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c
index 0e8da909d4f2..216d9db6b9ac 100644
--- a/net/rxrpc/sendmsg.c
+++ b/net/rxrpc/sendmsg.c
@@ -487,7 +487,7 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
if (ret < 0)
goto maybe_error;
if (call->interruptibility == RXRPC_INTERRUPTIBLE) {
- if (mutex_lock_interruptible(&call->user_mutex) < 0) {
+ if (mutex_lock_interruptible(&call->user_mutex)) {
ret = sock_intr_errno(timeo);
goto maybe_error;
}
diff --git a/security/integrity/ima/ima_fs.c b/security/integrity/ima/ima_fs.c
index e4a79a9b2d58..42e0b2716483 100644
--- a/security/integrity/ima/ima_fs.c
+++ b/security/integrity/ima/ima_fs.c
@@ -370,7 +370,7 @@ static ssize_t ima_write_policy(struct file *file, const char __user *buf,
}
result = mutex_lock_interruptible(&ima_write_mutex);
- if (result < 0)
+ if (result)
goto out_free;
if (data[0] == '/') {
diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c
index 92ffe9dc20c5..02c4c05d1492 100644
--- a/sound/pci/oxygen/oxygen_lib.c
+++ b/sound/pci/oxygen/oxygen_lib.c
@@ -203,7 +203,7 @@ static void oxygen_proc_read(struct snd_info_entry *entry,
snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
snd_iprintf(buffer, "\n");
}
- if (mutex_lock_interruptible(&chip->mutex) < 0)
+ if (mutex_lock_interruptible(&chip->mutex))
return;
if (chip->has_ac97_0) {
snd_iprintf(buffer, "\nAC97:\n");