[PATCH 16/21] Char: cyclades, remove locking macros

From: Jiri Slaby
Date: Sun Apr 29 2007 - 17:04:27 EST

cyclades, remove locking macros

and use locally stored card structure if possible

Signed-off-by: Jiri Slaby <jirislaby@xxxxxxxxx>

---
commit c2e132ebb19f9f8b3d4aee5cd4f755cd7588d49f
tree 348c7bc6a73a4859d4840779f5663b64c9f6c62a
parent 5a04eb52bbde6de3f92613f57f5d667a5cb3e8bd
author Jiri Slaby <jirislaby@xxxxxxxxx> Fri, 27 Apr 2007 17:47:21 +0200
committer Jiri Slaby <jirislaby@xxxxxxxxx> Sat, 28 Apr 2007 23:48:34 +0200

drivers/char/cyclades.c | 245 +++++++++++++++++++++++------------------------
1 files changed, 118 insertions(+), 127 deletions(-)

diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index ab9ad66..6e5fca9 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -653,16 +653,6 @@
#include <asm/irq.h>
#include <asm/uaccess.h>

-#define CY_LOCK(info,flags) \
- do { \
- spin_lock_irqsave(&info->card->card_lock, flags); \
- } while (0)
-
-#define CY_UNLOCK(info,flags) \
- do { \
- spin_unlock_irqrestore(&info->card->card_lock, flags); \
- } while (0)
-
#include <linux/kernel.h>
#include <linux/pci.h>

@@ -1863,13 +1853,13 @@ static void cyz_rx_restart(unsigned long arg)
__u32 channel = info->line - card->first_line;
unsigned long flags;

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L);
if (retval != 0) {
printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n",
info->line, retval);
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}

#else /* CONFIG_CYZ_INTR */
@@ -1949,7 +1939,7 @@ static int startup(struct cyclades_port *info)
if (!page)
return -ENOMEM;

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);

if (info->flags & ASYNC_INITIALIZED) {
free_page(page);
@@ -1969,7 +1959,7 @@ static int startup(struct cyclades_port *info)
else
info->xmit_buf = (unsigned char *)page;

- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);

set_line_char(info);

@@ -1984,7 +1974,7 @@ static int startup(struct cyclades_port *info)
"base_addr %p\n",
card, chip, channel, base_addr);
#endif
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);

cy_writeb(base_addr + (CyCAR << index), (u_char) channel);

@@ -2020,7 +2010,7 @@ static int startup(struct cyclades_port *info)
info->idle_stats.recv_idle =
info->idle_stats.xmit_idle = jiffies;

- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);

} else {
struct FIRM_ID __iomem *firm_id;
@@ -2045,7 +2035,7 @@ static int startup(struct cyclades_port *info)
printk(KERN_DEBUG "cyc startup Z card %d, channel %d, "
"base_addr %p\n", card, channel, base_addr);
#endif
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);

cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE);
#ifdef Z_WAKE
@@ -2085,8 +2075,7 @@ static int startup(struct cyclades_port *info)
cy_writel(&ch_ctrl[channel].rs_control,
readl(&ch_ctrl[channel].rs_control) | C_RS_RTS |
C_RS_DTR);
- retval = cyz_issue_cmd(info->card, channel,
- C_CM_IOCTLM, 0L);
+ retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
if (retval != 0) {
printk(KERN_ERR "cyc:startup(3) retval on ttyC%d was "
"%x\n", info->line, retval);
@@ -2108,7 +2097,7 @@ static int startup(struct cyclades_port *info)
info->idle_stats.recv_idle =
info->idle_stats.xmit_idle = jiffies;

- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}

#ifdef CY_DEBUG_OPEN
@@ -2117,7 +2106,7 @@ static int startup(struct cyclades_port *info)
return 0;

errout:
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
return retval;
} /* startup */

@@ -2136,22 +2125,22 @@ static void start_xmit(struct cyclades_port *info)
index = card->bus_index;
base_addr = card->base_addr + (cy_chip_offset[chip] << index);

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index), channel);
cy_writeb(base_addr + (CySRER << index),
readb(base_addr + (CySRER << index)) | CyTxRdy);
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
} else {
#ifdef CONFIG_CYZ_INTR
int retval;

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L);
if (retval != 0) {
printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was "
"%x\n", info->line, retval);
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
#else /* CONFIG_CYZ_INTR */
/* Don't have to do anything at this time */
#endif /* CONFIG_CYZ_INTR */
@@ -2187,7 +2176,7 @@ static void shutdown(struct cyclades_port *info)
card, chip, channel, base_addr);
#endif

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);

/* Clear delta_msr_wait queue to avoid mem leaks. */
wake_up_interruptible(&info->delta_msr_wait);
@@ -2217,7 +2206,7 @@ static void shutdown(struct cyclades_port *info)
set_bit(TTY_IO_ERROR, &info->tty->flags);
}
info->flags &= ~ASYNC_INITIALIZED;
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
} else {
struct FIRM_ID __iomem *firm_id;
struct ZFW_CTRL __iomem *zfw_ctrl;
@@ -2241,7 +2230,7 @@ static void shutdown(struct cyclades_port *info)
board_ctrl = &zfw_ctrl->board_ctrl;
ch_ctrl = zfw_ctrl->ch_ctrl;

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);

if (info->xmit_buf) {
unsigned char *temp;
@@ -2270,7 +2259,7 @@ static void shutdown(struct cyclades_port *info)
}
info->flags &= ~ASYNC_INITIALIZED;

- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}

#ifdef CY_DEBUG_OPEN
@@ -2330,10 +2319,10 @@ block_til_ready(struct tty_struct *tty, struct file *filp,
printk(KERN_DEBUG "cyc block_til_ready before block: ttyC%d, "
"count = %d\n", info->line, info->count);
#endif
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&cinfo->card_lock, flags);
if (!tty_hung_up_p(filp))
info->count--;
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&cinfo->card_lock, flags);
#ifdef CY_DEBUG_COUNT
printk(KERN_DEBUG "cyc block_til_ready: (%d): decrementing count to "
"%d\n", current->pid, info->count);
@@ -2347,7 +2336,7 @@ block_til_ready(struct tty_struct *tty, struct file *filp,
base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index);

while (1) {
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&cinfo->card_lock, flags);
if ((tty->termios->c_cflag & CBAUD)) {
cy_writeb(base_addr + (CyCAR << index),
(u_char) channel);
@@ -2363,7 +2352,7 @@ block_til_ready(struct tty_struct *tty, struct file *filp,
readb(base_addr + (CyMSVR2 << index)));
#endif
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&cinfo->card_lock, flags);

set_current_state(TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) ||
@@ -2373,16 +2362,16 @@ block_til_ready(struct tty_struct *tty, struct file *filp,
break;
}

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&cinfo->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index),
(u_char) channel);
if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) ||
(readb(base_addr +
(CyMSVR1 << index)) & CyDCD))) {
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&cinfo->card_lock, flags);
break;
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&cinfo->card_lock, flags);

if (signal_pending(current)) {
retval = -ERESTARTSYS;
@@ -2419,7 +2408,7 @@ block_til_ready(struct tty_struct *tty, struct file *filp,
cy_writel(&ch_ctrl[channel].rs_control,
readl(&ch_ctrl[channel].rs_control) |
C_RS_RTS | C_RS_DTR);
- retval = cyz_issue_cmd(info->card,
+ retval = cyz_issue_cmd(cinfo,
channel, C_CM_IOCTLM, 0L);
if (retval != 0) {
printk(KERN_ERR "cyc:block_til_ready "
@@ -2688,6 +2677,7 @@ static void cy_wait_until_sent(struct tty_struct *tty, int timeout)
static void cy_close(struct tty_struct *tty, struct file *filp)
{
struct cyclades_port *info = tty->driver_data;
+ struct cyclades_card *card;
unsigned long flags;

#ifdef CY_DEBUG_OTHER
@@ -2698,10 +2688,12 @@ static void cy_close(struct tty_struct *tty, struct file *filp)
return;
}

- CY_LOCK(info, flags);
+ card = info->card;
+
+ spin_lock_irqsave(&card->card_lock, flags);
/* If the TTY is being hung up, nothing to do */
if (tty_hung_up_p(filp)) {
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
return;
}
#ifdef CY_DEBUG_OPEN
@@ -2731,7 +2723,7 @@ static void cy_close(struct tty_struct *tty, struct file *filp)
info->count = 0;
}
if (info->count) {
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
return;
}
info->flags |= ASYNC_CLOSING;
@@ -2741,16 +2733,16 @@ static void cy_close(struct tty_struct *tty, struct file *filp)
* the line discipline to only process XON/XOFF characters.
*/
tty->closing = 1;
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
if (info->closing_wait != CY_CLOSING_WAIT_NONE) {
tty_wait_until_sent(tty, info->closing_wait);
}
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);

- if (!IS_CYC_Z(*info->card)) {
- int channel = info->line - info->card->first_line;
- int index = info->card->bus_index;
- void __iomem *base_addr = info->card->base_addr +
+ if (!IS_CYC_Z(*card)) {
+ int channel = info->line - card->first_line;
+ int index = card->bus_index;
+ void __iomem *base_addr = card->base_addr +
(cy_chip_offset[channel >> 2] << index);
/* Stop accepting input */
channel &= 0x03;
@@ -2760,53 +2752,52 @@ static void cy_close(struct tty_struct *tty, struct file *filp)
if (info->flags & ASYNC_INITIALIZED) {
/* Waiting for on-board buffers to be empty before closing
the port */
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
cy_wait_until_sent(tty, info->timeout);
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
}
} else {
#ifdef Z_WAKE
/* Waiting for on-board buffers to be empty before closing the port */
- void __iomem *base_addr = info->card->base_addr;
+ void __iomem *base_addr = card->base_addr;
struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS;
struct ZFW_CTRL __iomem *zfw_ctrl =
base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl;
- int channel = info->line - info->card->first_line;
+ int channel = info->line - card->first_line;
int retval;

if (readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) {
- retval = cyz_issue_cmd(info->card, channel,
- C_CM_IOCTLW, 0L);
+ retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L);
if (retval != 0) {
printk(KERN_DEBUG "cyc:cy_close retval on "
"ttyC%d was %x\n", info->line, retval);
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
wait_for_completion_interruptible(&info->shutdown_wait);
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
}
#endif
}

- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
shutdown(info);
if (tty->driver->flush_buffer)
tty->driver->flush_buffer(tty);
tty_ldisc_flush(tty);
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);

tty->closing = 0;
info->event = 0;
info->tty = NULL;
if (info->blocked_open) {
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
if (info->close_delay) {
msleep_interruptible(jiffies_to_msecs
(info->close_delay));
}
wake_up_interruptible(&info->open_wait);
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
}
info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
wake_up_interruptible(&info->close_wait);
@@ -2815,7 +2806,7 @@ static void cy_close(struct tty_struct *tty, struct file *filp)
printk(KERN_DEBUG "cyc:cy_close done\n");
#endif

- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
} /* cy_close */

/* This routine gets called when tty_write has put something into
@@ -2848,7 +2839,7 @@ static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count)
if (!info->xmit_buf)
return 0;

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&info->card->card_lock, flags);
while (1) {
c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1),
(int)(SERIAL_XMIT_SIZE - info->xmit_head)));
@@ -2864,7 +2855,7 @@ static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count)
count -= c;
ret += c;
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&info->card->card_lock, flags);

info->idle_stats.xmit_bytes += ret;
info->idle_stats.xmit_idle = jiffies;
@@ -2897,9 +2888,9 @@ static void cy_put_char(struct tty_struct *tty, unsigned char ch)
if (!info->xmit_buf)
return;

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&info->card->card_lock, flags);
if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) {
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&info->card->card_lock, flags);
return;
}

@@ -2908,7 +2899,7 @@ static void cy_put_char(struct tty_struct *tty, unsigned char ch)
info->xmit_cnt++;
info->idle_stats.xmit_bytes++;
info->idle_stats.xmit_idle = jiffies;
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&info->card->card_lock, flags);
} /* cy_put_char */

/*
@@ -3202,7 +3193,7 @@ static void set_line_char(struct cyclades_port *info)
channel &= 0x03;
base_addr = card->base_addr + (cy_chip_offset[chip] << index);

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index), (u_char) channel);

/* tx and rx baud rate */
@@ -3297,7 +3288,7 @@ static void set_line_char(struct cyclades_port *info)
if (info->tty) {
clear_bit(TTY_IO_ERROR, &info->tty->flags);
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);

} else {
struct FIRM_ID __iomem *firm_id;
@@ -3537,10 +3528,10 @@ static int get_lsr_info(struct cyclades_port *info, unsigned int __user * value)
index = card->bus_index;
base_addr = card->base_addr + (cy_chip_offset[chip] << index);

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
status = readb(base_addr + (CySRER << index)) &
(CyTxRdy | CyTxMpty);
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
result = (status ? 0 : TIOCSER_TEMT);
} else {
/* Not supported yet */
@@ -3575,11 +3566,11 @@ static int cy_tiocmget(struct tty_struct *tty, struct file *file)
index = card->bus_index;
base_addr = card->base_addr + (cy_chip_offset[chip] << index);

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index), (u_char) channel);
status = readb(base_addr + (CyMSVR1 << index));
status |= readb(base_addr + (CyMSVR2 << index));
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);

if (info->rtsdtr_inv) {
result = ((status & CyRTS) ? TIOCM_DTR : 0) |
@@ -3643,7 +3634,7 @@ cy_tiocmset(struct tty_struct *tty, struct file *file,
base_addr = card->base_addr + (cy_chip_offset[chip] << index);

if (set & TIOCM_RTS) {
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index),
(u_char) channel);
if (info->rtsdtr_inv) {
@@ -3653,10 +3644,10 @@ cy_tiocmset(struct tty_struct *tty, struct file *file,
cy_writeb(base_addr + (CyMSVR1 << index),
CyRTS);
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}
if (clear & TIOCM_RTS) {
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index),
(u_char) channel);
if (info->rtsdtr_inv) {
@@ -3666,10 +3657,10 @@ cy_tiocmset(struct tty_struct *tty, struct file *file,
cy_writeb(base_addr + (CyMSVR1 << index),
~CyRTS);
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}
if (set & TIOCM_DTR) {
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index),
(u_char) channel);
if (info->rtsdtr_inv) {
@@ -3685,10 +3676,10 @@ cy_tiocmset(struct tty_struct *tty, struct file *file,
readb(base_addr + (CyMSVR1 << index)),
readb(base_addr + (CyMSVR2 << index)));
#endif
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}
if (clear & TIOCM_DTR) {
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index),
(u_char) channel);
if (info->rtsdtr_inv) {
@@ -3705,7 +3696,7 @@ cy_tiocmset(struct tty_struct *tty, struct file *file,
readb(base_addr + (CyMSVR1 << index)),
readb(base_addr + (CyMSVR2 << index)));
#endif
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}
} else {
base_addr = card->base_addr;
@@ -3718,21 +3709,21 @@ cy_tiocmset(struct tty_struct *tty, struct file *file,
ch_ctrl = zfw_ctrl->ch_ctrl;

if (set & TIOCM_RTS) {
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writel(&ch_ctrl[channel].rs_control,
readl(&ch_ctrl[channel].rs_control) |
C_RS_RTS);
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}
if (clear & TIOCM_RTS) {
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writel(&ch_ctrl[channel].rs_control,
readl(&ch_ctrl[channel].rs_control) &
~C_RS_RTS);
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}
if (set & TIOCM_DTR) {
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writel(&ch_ctrl[channel].rs_control,
readl(&ch_ctrl[channel].rs_control) |
C_RS_DTR);
@@ -3740,10 +3731,10 @@ cy_tiocmset(struct tty_struct *tty, struct file *file,
printk(KERN_DEBUG "cyc:set_modem_info raising "
"Z DTR\n");
#endif
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}
if (clear & TIOCM_DTR) {
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writel(&ch_ctrl[channel].rs_control,
readl(&ch_ctrl[channel].rs_control) &
~C_RS_DTR);
@@ -3751,19 +3742,18 @@ cy_tiocmset(struct tty_struct *tty, struct file *file,
printk(KERN_DEBUG "cyc:set_modem_info clearing "
"Z DTR\n");
#endif
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}
} else {
return -ENODEV;
}
- CY_LOCK(info, flags);
- retval = cyz_issue_cmd(info->card,
- channel, C_CM_IOCTLM, 0L);
+ spin_lock_irqsave(&card->card_lock, flags);
+ retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
if (retval != 0) {
printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d "
"was %x\n", info->line, retval);
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}
return 0;
} /* cy_tiocmset */
@@ -3774,13 +3764,16 @@ cy_tiocmset(struct tty_struct *tty, struct file *file,
static void cy_break(struct tty_struct *tty, int break_state)
{
struct cyclades_port *info = tty->driver_data;
+ struct cyclades_card *card;
unsigned long flags;

if (serial_paranoia_check(info, tty->name, "cy_break"))
return;

- CY_LOCK(info, flags);
- if (!IS_CYC_Z(*info->card)) {
+ card = info->card;
+
+ spin_lock_irqsave(&card->card_lock, flags);
+ if (!IS_CYC_Z(*card)) {
/* Let the transmit ISR take care of this (since it
requires stuffing characters into the output stream).
*/
@@ -3788,18 +3781,18 @@ static void cy_break(struct tty_struct *tty, int break_state)
if (!info->breakon) {
info->breakon = 1;
if (!info->xmit_cnt) {
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
start_xmit(info);
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
}
}
} else {
if (!info->breakoff) {
info->breakoff = 1;
if (!info->xmit_cnt) {
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
start_xmit(info);
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
}
}
}
@@ -3807,16 +3800,16 @@ static void cy_break(struct tty_struct *tty, int break_state)
int retval;

if (break_state == -1) {
- retval = cyz_issue_cmd(info->card,
- info->line - info->card->first_line,
+ retval = cyz_issue_cmd(card,
+ info->line - card->first_line,
C_CM_SET_BREAK, 0L);
if (retval != 0) {
printk(KERN_ERR "cyc:cy_break (set) retval on "
"ttyC%d was %x\n", info->line, retval);
}
} else {
- retval = cyz_issue_cmd(info->card,
- info->line - info->card->first_line,
+ retval = cyz_issue_cmd(card,
+ info->line - card->first_line,
C_CM_CLR_BREAK, 0L);
if (retval != 0) {
printk(KERN_DEBUG "cyc:cy_break (clr) retval "
@@ -3825,7 +3818,7 @@ static void cy_break(struct tty_struct *tty, int break_state)
}
}
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
} /* cy_break */

static int
@@ -3860,10 +3853,10 @@ static int set_threshold(struct cyclades_port *info, unsigned long value)
info->cor3 &= ~CyREC_FIFO;
info->cor3 |= value & CyREC_FIFO;

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writeb(base_addr + (CyCOR3 << index), info->cor3);
cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index);
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
} else {
/* Nothing to do! */
}
@@ -3922,9 +3915,9 @@ static int set_timeout(struct cyclades_port *info, unsigned long value)
index = card->bus_index;
base_addr = card->base_addr + (cy_chip_offset[chip] << index);

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writeb(base_addr + (CyRTPR << index), value & 0xff);
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
} else {
/* Nothing to do! */
}
@@ -4067,15 +4060,15 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
* Caller should use TIOCGICOUNT to see which one it was
*/
case TIOCMIWAIT:
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&info->card->card_lock, flags);
/* note the counters on entry */
cnow = info->icount;
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&info->card->card_lock, flags);
ret_val = wait_event_interruptible(info->delta_msr_wait, ({
cprev = cnow;
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&info->card->card_lock, flags);
cnow = info->icount; /* atomic copy */
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&info->card->card_lock, flags);

((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
@@ -4091,9 +4084,9 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
* RI where only 0->1 is counted.
*/
case TIOCGICOUNT:
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&info->card->card_lock, flags);
cnow = info->icount;
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&info->card->card_lock, flags);
p_cuser = argp;
ret_val = put_user(cnow.cts, &p_cuser->cts);
if (ret_val)
@@ -4248,7 +4241,7 @@ static void cy_throttle(struct tty_struct *tty)
base_addr = card->base_addr +
(cy_chip_offset[chip] << index);

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index),
(u_char) channel);
if (info->rtsdtr_inv) {
@@ -4258,7 +4251,7 @@ static void cy_throttle(struct tty_struct *tty)
cy_writeb(base_addr + (CyMSVR1 << index),
~CyRTS);
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
} else {
info->throttle = 1;
}
@@ -4306,7 +4299,7 @@ static void cy_unthrottle(struct tty_struct *tty)
base_addr = card->base_addr +
(cy_chip_offset[chip] << index);

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index),
(u_char) channel);
if (info->rtsdtr_inv) {
@@ -4316,7 +4309,7 @@ static void cy_unthrottle(struct tty_struct *tty)
cy_writeb(base_addr + (CyMSVR1 << index),
CyRTS);
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
} else {
info->throttle = 0;
}
@@ -4347,15 +4340,14 @@ static void cy_stop(struct tty_struct *tty)
index = cinfo->bus_index;
chip = channel >> 2;
channel &= 0x03;
- base_addr = info->card->base_addr +
- (cy_chip_offset[chip] << index);
+ base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index);

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&cinfo->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index),
(u_char)(channel & 0x0003)); /* index channel */
cy_writeb(base_addr + (CySRER << index),
readb(base_addr + (CySRER << index)) & ~CyTxRdy);
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&cinfo->card_lock, flags);
} else {
/* Nothing to do! */
}
@@ -4382,14 +4374,13 @@ static void cy_start(struct tty_struct *tty)
if (!IS_CYC_Z(*cinfo)) {
chip = channel >> 2;
channel &= 0x03;
- base_addr = info->card->base_addr +
- (cy_chip_offset[chip] << index);
+ base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index);

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&cinfo->card_lock, flags);
cy_writeb(base_addr + (CyCAR << index), (u_char) (channel & 0x0003)); /* index channel */
cy_writeb(base_addr + (CySRER << index),
readb(base_addr + (CySRER << index)) | CyTxRdy);
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&cinfo->card_lock, flags);
} else {
/* Nothing to do! */
}
@@ -4412,19 +4403,19 @@ static void cy_flush_buffer(struct tty_struct *tty)
card = info->card;
channel = info->line - card->first_line;

- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);

if (IS_CYC_Z(*card)) { /* If it is a Z card, flush the on-board
buffers as well */
- CY_LOCK(info, flags);
+ spin_lock_irqsave(&card->card_lock, flags);
retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L);
if (retval != 0) {
printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d "
"was %x\n", info->line, retval);
}
- CY_UNLOCK(info, flags);
+ spin_unlock_irqrestore(&card->card_lock, flags);
}
tty_wakeup(tty);
} /* cy_flush_buffer */
-
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