linux-toradex.git/drivers/net/wireless/rtl818x, branch v3.12.45

rtl8187: fix regression on MIPS without coherent DMA

2014-03-05T16:13:41+00:00

commit b6213e413a4e0c66548153516b074df14f9d08e0 upstream.

This patch fixes regression caused by commit a16dad77634 "MIPS: Fix
potencial corruption". That commit fixes one corruption scenario in
cost of adding another one, which actually start to cause crashes
on Yeeloong laptop when rtl8187 driver is used.

For correct DMA read operation on machines without DMA coherence, kernel
have to invalidate cache, such it will refill later with new data that
device wrote to memory, when that data is needed to process. We can only
invalidate full cache line. Hence when cache line includes both dma
buffer and some other data (written in cache, but not yet in main
memory), the other data can not hit memory due to invalidation. That
happen on rtl8187 where struct rtl8187_priv fields are located just
before and after small buffers that are passed to USB layer and DMA
is performed on them.

To fix the problem we align buffers and reserve space after them to make
them match cache line.

This patch does not resolve all possible MIPS problems entirely, for
that we have to assure that we always map cache aligned buffers for DMA,
what can be complex or even not possible. But patch fixes visible and
reproducible regression and seems other possible corruptions do not
happen in practice, since Yeeloong laptop works stable without rtl8187
driver.

Bug report:
https://bugzilla.kernel.org/show_bug.cgi?id=54391

Reported-by: Petr Pisar 
Bisected-by: Tom Li 
Reported-and-tested-by: Tom Li 
Signed-off-by: Stanislaw Gruszka 
Acked-by: Larry Finger 
Acked-by: Hin-Tak Leung 
Signed-off-by: John W. Linville 
Signed-off-by: Jiri Slaby

rtl8187: fix use after free on failure path in rtl8187_init_urbs()

2013-09-09T18:42:00+00:00

In case of __dev_alloc_skb() failure rtl8187_init_urbs()
calls usb_free_urb(entry) where 'entry' can points to urb
allocated at the previous iteration. That means refcnt will be
decremented incorrectly and the urb can be used after memory
deallocation.

The patch fixes the issue and implements error handling of init_urbs
in rtl8187_start().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov 
Signed-off-by: John W. Linville

Update e-mail address for Andrea Merello (resubmit)

2013-08-26T18:10:40+00:00

A lot of files contain reference to my old e-mail address.
Now I'm going not to read mail from it anymore, so update it
with my current address everywhere.

Signed-off-by: Andrea Merello 
Signed-off-by: John W. Linville

mac80211: Use a cfg80211_chan_def in ieee80211_hw_conf_chan

2013-03-25T18:19:35+00:00

Drivers that don't use chanctxes cannot perform VHT association because
they still use a "backward compatibility" pair of {ieee80211_channel,
nl80211_channel_type} in ieee80211_conf and ieee80211_local.

Signed-off-by: Karl Beldan 
[fix kernel-doc]
Signed-off-by: Johannes Berg

drivers/net/wireless/rtl818x: remove depends on CONFIG_EXPERIMENTAL

2013-01-22T20:01:35+00:00

The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

Acked-by: John W. Linville 
Acked-by: David S. Miller 
Signed-off-by: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

rtl8187: remove __dev* attributes

2012-12-06T20:04:59+00:00

CONFIG_HOTPLUG is going away as an option.  As result the __dev*
markings will be going away.

Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst,
and __devexit.

Signed-off-by: Bill Pemberton 
Cc: Herton Ronaldo Krzesinski 
Cc: Hin-Tak Leung 
Cc: Larry Finger 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: John W. Linville

rtl8187: remove __dev* attributes

2012-12-06T20:04:58+00:00

CONFIG_HOTPLUG is going away as an option.  As result the __dev*
markings will be going away.

Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst,
and __devexit.

Signed-off-by: Bill Pemberton 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: John W. Linville

mac80211: support RX_FLAG_MACTIME_END

2012-11-13T20:43:55+00:00

Allow drivers to indicate their mactime is at RX completion and adjust
for this in mac80211. Also rename the existing RX_FLAG_MACTIME_MPDU to
RX_FLAG_MACTIME_START to clarify its intent. Based on similar code by
Johannes Berg.

Signed-off-by: Thomas Pedersen 
[fix docs, atheros drivers]
Signed-off-by: Johannes Berg

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem

2012-08-24T16:25:30+00:00

USB: rtl8187: remove __devinit* from the struct usb_device_id table

2012-08-18T00:50:45+00:00

This structure needs to always stick around, even if CONFIG_HOTPLUG
is disabled, otherwise we can oops when trying to probe a device that
was added after the structure is thrown away.

Thanks to Fengguang Wu and Bjørn Mork for tracking this issue down.

Reported-by: Fengguang Wu 
Reported-by: Bjørn Mork 
Cc: stable 
CC: Herton Ronaldo Krzesinski 
CC: Hin-Tak Leung 
CC: Larry Finger 
CC: "John W. Linville" 
Signed-off-by: Greg Kroah-Hartman