libertas: detect TX lockups and reset hardware

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Recent patches added support for resetting the SD8686 hardware when
commands time out, which seems to happen quite frequently soon after
resuming the system from a Wake-on-WLAN-triggered resume.

At http://dev.laptop.org/ticket/10969 we see the same thing happen
with transmits. In this case, the hardware will fail to respond to
a frame passed for transmission, and libertas (correctly) will block
all further commands and transmissions as the hardware can only
deal with one thing at a time. This results in a lockup while the
system waits indefinitely for the dead card to respond.

Hook up a TX lockup timer to detect this and reset the hardware.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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Daniel Drake 2011-10-03 11:33:02 +01:00 • committed by John W. Linville

parent 8a3a3c85e4

commit 8f641d93c3

2 changed files with 36 additions and 0 deletions

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1

drivers/net/wireless/libertas/dev.h

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35

drivers/net/wireless/libertas/main.c

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