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Subjectpull request: wireless 2012-08-10
commit 039aafba1b57ed39acb3abc290c11be37402feb2

Dave,

Here is a handful of fixes intended for 3.6.

Daniel Drake offers a cfg80211 fix to consume pending events before
taking a wireless device down. This prevents a resource leak.

Stanislaw Gruszka gives us a fix for a NULL pointer dereference in
rt61pci.

Johannes Berg provides an iwlwifi patch to disable "greenfield" mode.
Use of that mode was causing a rate scaling problem in for iwlwifi.

Please let me know if there are problems!

Thanks,

John

---
The following changes since commit 63d02d157ec4124990258d66517b6c11fd6df0cf:

net: tcp: ipv6_mapped needs sk_rx_dst_set method (2012-08-09 20:56:09 -0700)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless.git for-davem

for you to fetch changes up to 039aafba1b57ed39acb3abc290c11be37402feb2:

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem (2012-08-10 14:05:38 -0400)

----------------------------------------------------------------
Daniel Drake (1):
cfg80211: process pending events when unregistering net device

Johannes Berg (1):
iwlwifi: disable greenfield transmissions as a workaround

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

Stanislaw Gruszka (1):
rt61pci: fix NULL pointer dereference in config_lna_gain

drivers/net/wireless/iwlwifi/dvm/rs.c | 13 ++++++++-----
drivers/net/wireless/rt2x00/rt61pci.c | 3 +--
net/wireless/core.c | 5 +++++
net/wireless/core.h | 1 +
net/wireless/util.c | 2 +-
5 files changed, 16 insertions(+), 8 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/dvm/rs.c b/drivers/net/wireless/iwlwifi/dvm/rs.c
index 6fddd27..a82f46c 100644
--- a/drivers/net/wireless/iwlwifi/dvm/rs.c
+++ b/drivers/net/wireless/iwlwifi/dvm/rs.c
@@ -707,11 +707,14 @@ static int rs_toggle_antenna(u32 valid_ant, u32 *rate_n_flags,
*/
static bool rs_use_green(struct ieee80211_sta *sta)
{
- struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
- struct iwl_rxon_context *ctx = sta_priv->ctx;
-
- return (sta->ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD) &&
- !(ctx->ht.non_gf_sta_present);
+ /*
+ * There's a bug somewhere in this code that causes the
+ * scaling to get stuck because GF+SGI can't be combined
+ * in SISO rates. Until we find that bug, disable GF, it
+ * has only limited benefit and we still interoperate with
+ * GF APs since we can always receive GF transmissions.
+ */
+ return false;
}

/**
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index f322596..3f7bc5c 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -2243,8 +2243,7 @@ static void rt61pci_txdone(struct rt2x00_dev *rt2x00dev)

static void rt61pci_wakeup(struct rt2x00_dev *rt2x00dev)
{
- struct ieee80211_conf conf = { .flags = 0 };
- struct rt2x00lib_conf libconf = { .conf = &conf };
+ struct rt2x00lib_conf libconf = { .conf = &rt2x00dev->hw->conf };

rt61pci_config(rt2x00dev, &libconf, IEEE80211_CONF_CHANGE_PS);
}
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 31b40cc..dcd64d5 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -952,6 +952,11 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
*/
synchronize_rcu();
INIT_LIST_HEAD(&wdev->list);
+ /*
+ * Ensure that all events have been processed and
+ * freed.
+ */
+ cfg80211_process_wdev_events(wdev);
break;
case NETDEV_PRE_UP:
if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype)))
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 5206c68..bc7430b 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -426,6 +426,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
struct net_device *dev, enum nl80211_iftype ntype,
u32 *flags, struct vif_params *params);
void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
+void cfg80211_process_wdev_events(struct wireless_dev *wdev);

int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 26f8cd3..994e2f0 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -735,7 +735,7 @@ void cfg80211_upload_connect_keys(struct wireless_dev *wdev)
wdev->connect_keys = NULL;
}

-static void cfg80211_process_wdev_events(struct wireless_dev *wdev)
+void cfg80211_process_wdev_events(struct wireless_dev *wdev)
{
struct cfg80211_event *ev;
unsigned long flags;
--
John W. Linville Someday the world will need a hero, and you
linville@tuxdriver.com might be all we have. Be ready.[unhandled content-type:application/pgp-signature]
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