linux-stable.git/drivers/net/wireless, branch v3.2.43

rt2x00: error in configurations with mesh support disabled

2013-04-10T02:20:08+00:00

commit 6ef9e2f6d12ce9e2120916804d2ddd46b954a70b upstream.

If CONFIG_MAC80211_MESH is not set, cfg80211 will now allow advertising
interface combinations with NL80211_IFTYPE_MESH_POINT present.
Add appropriate ifdefs to avoid running into errors.

Signed-off-by: Felix Fietkau 
Acked-by: Gertjan van Wingerde 
Signed-off-by: John W. Linville 
[lxiang: Backported for 3.4-stable. Removed code of simultaneous AP and mesh
 mode added in 4a5fc6d 3.9-rc1.]
Signed-off-by: Lingzhu Xiang 
Reviewed-by: CAI Qian 
Signed-off-by: Ben Hutchings

b43: A fix for DMA transmission sequence errors

2013-04-10T02:20:04+00:00

commit b251412db99ccd4495ce372fec7daee27bf06923 upstream.

Intermittently, b43 will report "Out of order TX status report on DMA ring".
When this happens, the driver must be reset before communication can resume.
The cause of the problem is believed to be an error in the closed-source
firmware; however, all versions of the firmware are affected.

This change uses the observation that the expected status is always 2 less
than the observed value, and supplies a fake status report to skip one
header/data pair.

Not all devices suffer from this problem, but it can occur several times
per second under heavy load. As each occurence kills the unmodified driver,
this patch makes if possible for the affected devices to function. The patch
logs only the first instance of the reset operation to prevent spamming
the logs.

Tested-by: Chris Vine 
Signed-off-by: Larry Finger 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings

rtlwifi: usb: add missing freeing of skbuff

2013-04-10T02:19:59+00:00

commit 36ef0b473fbf43d5db23eea4616cc1d18cec245f upstream.

Signed-off-by: Jussi Kivilinna 
Acked-by: Larry Finger 
Signed-off-by: John W. Linville 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings

ath9k_hw: revert chainmask to user configuration after calibration

2013-04-10T02:19:59+00:00

commit 74632d11a133b5baf6b9d622dd19d2f944d93d94 upstream.

The commit 'ath9k_hw: fix calibration issues on chainmask that don't
include chain 0' changed the hardware chainmask to the chip chainmask
for the duration of the calibration, but the revert to user
configuration in the reset path runs too early.

That causes some issues with limiting the number of antennas (including
spurious failure in hardware-generated packets).

Fix this by reverting the chainmask after the essential parts of the
calibration that need the workaround, and before NF calibration is run.

Signed-off-by: Felix Fietkau 
Reported-by: Wojciech Dubowik 
Tested-by: Wojciech Dubowik 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings

rtlwifi: rtl8192cu: Fix problem that prevents reassociation

2013-03-27T02:41:02+00:00

commit 9437a248e7cac427c898bdb11bd1ac6844a1ead4 upstream.

The driver was failing to clear the BSSID when a disconnect happened. That
prevented a reconnection. This problem is reported at
https://bugzilla.redhat.com/show_bug.cgi?id=789605,
https://bugzilla.redhat.com/show_bug.cgi?id=866786,
https://bugzilla.redhat.com/show_bug.cgi?id=906734, and
https://bugzilla.kernel.org/show_bug.cgi?id=46171.

Thanks to Jussi Kivilinna for making the critical observation
that led to the solution.

Reported-by: Jussi Kivilinna 
Tested-by: Jussi Kivilinna 
Tested-by: Alessandro Lannocca 
Signed-off-by: Larry Finger 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings

rtlwifi: rtl8192cu: Fix schedule while atomic bug splat

2013-03-27T02:41:01+00:00

commit 664899786cb49cb52f620e06ac19c0be524a7cfa upstream.

When run at debug 3 or higher, rtl8192cu reports a BUG as follows:

BUG: scheduling while atomic: kworker/u:0/5281/0x00000002
INFO: lockdep is turned off.
Modules linked in: rtl8192cu rtl8192c_common rtlwifi fuse af_packet bnep bluetooth b43 mac80211 cfg80211 ipv6 snd_hda_codec_conexant kvm_amd k
vm snd_hda_intel snd_hda_codec bcma rng_core snd_pcm ssb mmc_core snd_seq snd_timer snd_seq_device snd i2c_nforce2 sr_mod pcmcia forcedeth i2c_core soundcore
 cdrom sg serio_raw k8temp hwmon joydev ac battery pcmcia_core snd_page_alloc video button wmi autofs4 ext4 mbcache jbd2 crc16 thermal processor scsi_dh_alua
 scsi_dh_hp_sw scsi_dh_rdac scsi_dh_emc scsi_dh ata_generic pata_acpi pata_amd [last unloaded: rtlwifi]
Pid: 5281, comm: kworker/u:0 Tainted: G        W    3.8.0-wl+ #119
Call Trace:
 [] __schedule_bug+0x62/0x70
 [] __schedule+0x730/0xa30
 [] ? usb_hcd_link_urb_to_ep+0x19/0xa0
 [] schedule+0x24/0x70
 [] schedule_timeout+0x18c/0x2f0
 [] ? wait_for_common+0x40/0x180
 [] ? ehci_urb_enqueue+0xf1/0xee0
 [] ? trace_hardirqs_on+0xd/0x10
 [] wait_for_common+0xe5/0x180
 [] ? try_to_wake_up+0x2d0/0x2d0
 [] wait_for_completion_timeout+0xe/0x10
 [] usb_start_wait_urb+0x8c/0x100
 [] usb_control_msg+0xd9/0x130
 [] _usb_read_sync+0xcd/0x140 [rtlwifi]
 [] _usb_read32_sync+0xe/0x10 [rtlwifi]
 [] rtl92cu_update_hal_rate_table+0x1a5/0x1f0 [rtl8192cu]

The cause is a synchronous read from routine rtl92cu_update_hal_rate_table().
The resulting output is not critical, thus the debug statement is
deleted.

Reported-by: Jussi Kivilinna 
Signed-off-by: Larry Finger 
Signed-off-by: John W. Linville 
[bwh: Backported to 3.2: the deleted code is slightly different]
Signed-off-by: Ben Hutchings

mwifiex: fix potential out-of-boundary access to ibss rate table

2013-03-27T02:41:01+00:00

commit 5f0fabf84d7b52f979dcbafa3d3c530c60d9a92c upstream.

smatch found this error:

CHECK   drivers/net/wireless/mwifiex/join.c
  drivers/net/wireless/mwifiex/join.c:1121
  mwifiex_cmd_802_11_ad_hoc_join()
  error: testing array offset 'i' after use.

Signed-off-by: Bing Zhao 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings

iwlwifi: always copy first 16 bytes of commands

2013-03-20T15:03:24+00:00

commit 8a964f44e01ad3bbc208c3e80d931ba91b9ea786 upstream.

The FH hardware will always write back to the scratch field
in commands, even host commands not just TX commands, which
can overwrite parts of the command. This is problematic if
the command is re-used (with IWL_HCMD_DFL_NOCOPY) and can
cause calibration issues.

Address this problem by always putting at least the first
16 bytes into the buffer we also use for the command header
and therefore make the DMA engine write back into this.

For commands that are smaller than 16 bytes also always map
enough memory for the DMA engine to write back to.

Reviewed-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg 
[bwh: Backported to 3.2:
 - Adjust context
 - Drop the IWL_HCMD_DFL_DUP handling
 - Fix descriptor addresses and lengths for tracepoint, but otherwise
   leave it unchanged]
Signed-off-by: Ben Hutchings

mwifiex: correct sleep delay counter

2013-03-20T15:03:19+00:00

commit 3e7a4ff7c5b6423ddb644df9c41b8b6d2fb79d30 upstream.

Maximum delay for waking up card is 50 ms. Because of typo in
counter, this delay goes to 500ms. This patch fixes the bug.

Signed-off-by: Avinash Patil 
Signed-off-by: Amitkumar Karwar 
Signed-off-by: Yogesh Ashok Powar 
Signed-off-by: Bing Zhao 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings

ath9k_htc: fix signal strength handling issues

2013-03-20T15:03:19+00:00

commit 838f427955dcfd16858b0108ce29029da0d56a4e upstream.

The ath9k commit 2ef167557c0a26c88162ecffb017bfcc51eb7b29
(ath9k: fix signal strength reporting issues) fixed an issue where the
reported per-frame signal strength reported to mac80211 was being
overwritten with an internal average. The same issue is also present
in ath9k_htc.
In addition to preventing the driver from overwriting the value, this
commit also ensures that the internal average (which is used for ANI)
only tracks beacons of the AP that we're connected to.

Signed-off-by: Felix Fietkau 
Signed-off-by: John W. Linville 
[bwh: Backported to 3.2: use compare_ether_addr() instead of
 ether_addr_equal(), with opposite sense]
Signed-off-by: Ben Hutchings