pull request: wireless 2011-11-22

From: John W. Linville
Date: Tue Nov 22 2011 - 14:45:34 EST

Dave,

Here is the latest batch of fixes intended for 3.2. This includes a
correction for a user-visible error in mac80211's debugfs info, a fix
for a potential memory corrupter in prism54, an endian fix for rt2x00,
an endian fix for mac80211, a fix for a NULL derefernce in cfg80211, a
locking fix and a deadlock fix for p54spi, and a pair of rt2x00 fixes
for handling some spurious interrupts that hardware can generate.

Please let me know if there are problems!

Thanks,

John

---

The following changes since commit f23aa62545c18728eb2b9434aa258be27e07dd49:

caif: fix endian conversion in cffrml_transmit() (2011-11-21 16:46:24 -0500)

are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless.git for-davem

Ben Greear (1):
mac80211: Fix AMSDU rate printout in debugfs.

Dan Carpenter (1):
prism54: potential memory corruption in prism54_get_essid()

Gertjan van Wingerde (1):
rt2x00: Fix efuse EEPROM reading on PPC32.

Helmut Schaa (1):
mac80211: Fix endian bug in radiotap header generation

Johannes Berg (1):
cfg80211: fix regulatory NULL dereference

John W. Linville (1):
Merge branch 'master' of git://git.kernel.org/.../linville/wireless into for-davem

Michael Buesch (2):
p54spi: Add missing spin_lock_init
p54spi: Fix workqueue deadlock

Stanislaw Gruszka (2):
rt2800pci: handle spurious interrupts
rt2x00: handle spurious pci interrupts

drivers/net/wireless/p54/p54spi.c | 5 +++--
drivers/net/wireless/prism54/isl_ioctl.c | 2 +-
drivers/net/wireless/rt2x00/rt2400pci.c | 2 +-
drivers/net/wireless/rt2x00/rt2500pci.c | 2 +-
drivers/net/wireless/rt2x00/rt2800lib.c | 2 +-
drivers/net/wireless/rt2x00/rt2800pci.c | 7 ++++++-
drivers/net/wireless/rt2x00/rt61pci.c | 2 +-
net/mac80211/debugfs_sta.c | 4 ++--
net/mac80211/status.c | 8 ++++----
net/wireless/reg.c | 4 ++++
10 files changed, 24 insertions(+), 14 deletions(-)

diff --git a/drivers/net/wireless/p54/p54spi.c b/drivers/net/wireless/p54/p54spi.c
index f18df82..78d0d69 100644
--- a/drivers/net/wireless/p54/p54spi.c
+++ b/drivers/net/wireless/p54/p54spi.c
@@ -588,8 +588,6 @@ static void p54spi_op_stop(struct ieee80211_hw *dev)

WARN_ON(priv->fw_state != FW_STATE_READY);

- cancel_work_sync(&priv->work);
-
p54spi_power_off(priv);
spin_lock_irqsave(&priv->tx_lock, flags);
INIT_LIST_HEAD(&priv->tx_pending);
@@ -597,6 +595,8 @@ static void p54spi_op_stop(struct ieee80211_hw *dev)

priv->fw_state = FW_STATE_OFF;
mutex_unlock(&priv->mutex);
+
+ cancel_work_sync(&priv->work);
}

static int __devinit p54spi_probe(struct spi_device *spi)
@@ -656,6 +656,7 @@ static int __devinit p54spi_probe(struct spi_device *spi)
init_completion(&priv->fw_comp);
INIT_LIST_HEAD(&priv->tx_pending);
mutex_init(&priv->mutex);
+ spin_lock_init(&priv->tx_lock);
SET_IEEE80211_DEV(hw, &spi->dev);
priv->common.open = p54spi_op_start;
priv->common.stop = p54spi_op_stop;
diff --git a/drivers/net/wireless/prism54/isl_ioctl.c b/drivers/net/wireless/prism54/isl_ioctl.c
index d97a2ca..bc2ba80 100644
--- a/drivers/net/wireless/prism54/isl_ioctl.c
+++ b/drivers/net/wireless/prism54/isl_ioctl.c
@@ -778,7 +778,7 @@ prism54_get_essid(struct net_device *ndev, struct iw_request_info *info,
dwrq->flags = 0;
dwrq->length = 0;
}
- essid->octets[essid->length] = '\0';
+ essid->octets[dwrq->length] = '\0';
memcpy(extra, essid->octets, dwrq->length);
kfree(essid);

diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c
index 3a6b402..676c765 100644
--- a/drivers/net/wireless/rt2x00/rt2400pci.c
+++ b/drivers/net/wireless/rt2x00/rt2400pci.c
@@ -1380,7 +1380,7 @@ static irqreturn_t rt2400pci_interrupt(int irq, void *dev_instance)
rt2x00pci_register_write(rt2x00dev, CSR7, reg);

if (!reg)
- return IRQ_NONE;
+ return IRQ_HANDLED;

if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return IRQ_HANDLED;
diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c
index dcc0e1f..d0b627c 100644
--- a/drivers/net/wireless/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/rt2x00/rt2500pci.c
@@ -1512,7 +1512,7 @@ static irqreturn_t rt2500pci_interrupt(int irq, void *dev_instance)
rt2x00pci_register_write(rt2x00dev, CSR7, reg);

if (!reg)
- return IRQ_NONE;
+ return IRQ_HANDLED;

if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return IRQ_HANDLED;
diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 3f183a1..1ba079d 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -3771,7 +3771,7 @@ static void rt2800_efuse_read(struct rt2x00_dev *rt2x00dev, unsigned int i)
/* Apparently the data is read from end to start */
rt2800_register_read_lock(rt2x00dev, EFUSE_DATA3, &reg);
/* The returned value is in CPU order, but eeprom is le */
- rt2x00dev->eeprom[i] = cpu_to_le32(reg);
+ *(u32 *)&rt2x00dev->eeprom[i] = cpu_to_le32(reg);
rt2800_register_read_lock(rt2x00dev, EFUSE_DATA2, &reg);
*(u32 *)&rt2x00dev->eeprom[i + 2] = cpu_to_le32(reg);
rt2800_register_read_lock(rt2x00dev, EFUSE_DATA1, &reg);
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index da48c8a..4dc2d0f 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -880,8 +880,13 @@ static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
rt2x00pci_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
rt2x00pci_register_write(rt2x00dev, INT_SOURCE_CSR, reg);

+ /*
+ * Some devices can generate interrupts with empty CSR register, we
+ * "handle" such irq's to prevent interrupt controller treat them as
+ * spurious interrupts and disable irq line.
+ */
if (!reg)
- return IRQ_NONE;
+ return IRQ_HANDLED;

if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return IRQ_HANDLED;
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index bf55b4a..9d83e70 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -2337,7 +2337,7 @@ static irqreturn_t rt61pci_interrupt(int irq, void *dev_instance)
rt2x00pci_register_write(rt2x00dev, INT_SOURCE_CSR, reg);

if (!reg && !reg_mcu)
- return IRQ_NONE;
+ return IRQ_HANDLED;

if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return IRQ_HANDLED;
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index c5f3417..3110cbd 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -274,9 +274,9 @@ static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,

PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");

- PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
- "3839 bytes");
PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
+ "3839 bytes");
+ PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
"7935 bytes");

/*
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 80de436..16518f3 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -260,7 +260,7 @@ static void ieee80211_add_tx_radiotap_header(struct ieee80211_supported_band
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct ieee80211_radiotap_header *rthdr;
unsigned char *pos;
- __le16 txflags;
+ u16 txflags;

rthdr = (struct ieee80211_radiotap_header *) skb_push(skb, rtap_len);

@@ -290,13 +290,13 @@ static void ieee80211_add_tx_radiotap_header(struct ieee80211_supported_band
txflags = 0;
if (!(info->flags & IEEE80211_TX_STAT_ACK) &&
!is_multicast_ether_addr(hdr->addr1))
- txflags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
+ txflags |= IEEE80211_RADIOTAP_F_TX_FAIL;

if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
(info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT))
- txflags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
+ txflags |= IEEE80211_RADIOTAP_F_TX_CTS;
else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
- txflags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
+ txflags |= IEEE80211_RADIOTAP_F_TX_RTS;

put_unaligned_le16(txflags, pos);
pos += 2;
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index e71f5a6..77e9267 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2037,6 +2037,10 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
}

request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
+ if (!request_wiphy) {
+ reg_set_request_processed();
+ return -ENODEV;
+ }

if (!last_request->intersect) {
int r;
--
John W. Linville Someday the world will need a hero, and you
linville@xxxxxxxxxxxxx might be all we have. Be ready.
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