linux-stable.git/drivers/net/wireless, branch v3.2.49

rtlwifi: rtl8192cu: Fix duplicate if test

2013-07-27T04:34:13+00:00

commit 10d0b9030a3f86e1e26c710c7580524d7787d688 upstream.

A typo causes routine rtl92cu_phy_rf6052_set_cck_txpower() to test the
same condition twice. The problem was found using cppcheck-1.49, and the
proper fix was verified against the pre-mac80211 version of the code.

This patch was originally included as commit 1288aa4, but was accidentally
reverted in a later patch.

Reported-by: David Binderman  [original report]
Reported-by: Andrea Morello  [report of accidental reversion]
Signed-off-by: Larry Finger 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings

rtlwifi: rtl8192cu: Add new USB ID for TP-Link TL-WN8200ND

2013-07-27T04:34:12+00:00

commit c4d827c5ccc3a49227dbf9d4b248a2e86f388023 upstream.

This is a new device for this driver.

Reported-by: Tobias Kluge 
Signed-off-by: Larry Finger 
Cc: Tobias Kluge 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings

ath9k: Do not assign noise for NULL caldata

2013-07-27T04:34:10+00:00

commit d3bcb7b24bbf09fde8405770e676fe0c11c79662 upstream.

ah->noise is maintained globally and not per-channel. This
is updated in the reset() routine after the NF history has been
filled for the *current channel*, just before switching to
the new channel. There is no need to do it inside getnf(), since
ah->noise must contain a value for the new channel.

Signed-off-by: Sujith Manoharan 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings

ath9k: Fix noisefloor calibration

2013-07-27T04:34:10+00:00

commit 696df78509d1f81b651dd98ecdc1aecab616db6b upstream.

The commits,

"ath9k: Fix regression in channelwidth switch at the same channel"
"ath9k: Fix invalid noisefloor reading due to channel update"

attempted to fix noisefloor calibration when a channel switch
happens due to HT20/HT40 bandwidth change. This is causing invalid
readings resulting in messages like:

"ath: phy16: NF[0] (-45) > MAX (-95), correcting to MAX".

This results in an incorrect noise being used initially for reporting
the signal level of received packets, until NF calibration is done
and the history buffer is updated via the ANI timer, which happens
much later.

When a bandwidth change happens, it is appropriate to reset
the internal history data for the channel. Do this correctly in the
reset() routine by checking the "chanmode" variable.

Cc: Rajkumar Manoharan 
Signed-off-by: Sujith Manoharan 
Signed-off-by: John W. Linville 
[bwh: Backported to 3.2: adjust context, indentation]
Signed-off-by: Ben Hutchings

ath9k: fill channel mode in caldata

2013-07-27T04:34:10+00:00

commit 77d848372875d2e4cbdbf07030f0e08cab5e7f4d upstream.

It is useful to have channel mode in caldata to find out
whether operaing channel is in HT40/20 when we are currently
on offchannel. It will be used by BTCOEX to enable/disable
concurrent tx mechanism later.

Signed-off-by: Rajkumar Manoharan 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings

ath9k_hw: Assign default xlna config for AR9485

2013-07-27T04:34:09+00:00

commit 30d5b709da23f4ab9836c7f66d2d2e780a69cf12 upstream.

For AR9485 boards with XLNA, the default gpio config
is not set correctly, fix this.

Signed-off-by: Sujith Manoharan 
Signed-off-by: John W. Linville 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings

b43: ensue that BCMA is "y" when B43 is "y"

2013-07-27T04:34:09+00:00

commit 693026ef2e751fd94d2e6c71028e68343cc875d5 upstream.

When b43 gets build into the kernel and it should use bcma we have to
ensure that bcma was also build into the kernel and not as a module.
In this patch this is also done for SSB, although you can not
build b43 without ssb support for now.

This fixes a build problem reported by Randy Dunlap in
5187EB95.2060605@infradead.org

Reported-By: Randy Dunlap 
Signed-off-by: Hauke Mehrtens 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings

b43: stop format string leaking into error msgs

2013-06-19T01:16:59+00:00

commit e0e29b683d6784ef59bbc914eac85a04b650e63c upstream.

The module parameter "fwpostfix" is userspace controllable, unfiltered,
and is used to define the firmware filename. b43_do_request_fw() populates
ctx->errors[] on error, containing the firmware filename. b43err()
parses its arguments as a format string. For systems with b43 hardware,
this could lead to a uid-0 to ring-0 escalation.

CVE-2013-2852

Signed-off-by: Kees Cook 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings

ath9k: Use minstrel rate control by default

2013-06-19T01:16:59+00:00

commit 5efac94999ff218e0101f67a059e44abb4b0b523 upstream.

The ath9k rate control algorithm has various architectural
issues that make it a poor fit in scenarios like congested
environments etc.

An example: https://bugzilla.redhat.com/show_bug.cgi?id=927191

Change the default to minstrel which is more robust in such cases.
The ath9k RC code is left in the driver for now, maybe it can
be removed altogether later on.

Cc: Jouni Malinen 
Cc: Linus Torvalds 
Signed-off-by: Sujith Manoharan 
Signed-off-by: John W. Linville 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings

ath9k: Disable PowerSave by default

2013-06-19T01:16:58+00:00

commit 531671cb17af07281e6f28c1425f754346e65c41 upstream.

Almost all the DMA issues which have plagued ath9k (in station mode)
for years are related to PS. Disabling PS usually "fixes" the user's
connection stablility. Reports of DMA problems are still trickling in
and are sitting in the kernel bugzilla. Until the PS code in ath9k is
given a thorough review, disbale it by default. The slight increase
in chip power consumption is a small price to pay for improved link
stability.

Signed-off-by: Sujith Manoharan 
Signed-off-by: John W. Linville 
Signed-off-by: Ben Hutchings