wimax/i2400m: fix oops caused by race condition when exiting USB kthreads

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Current i2400m USB code had to threads (one for processing RX, one for
TX). When calling i2400m_{tx,rx}_release(), it would crash if the
thread had exited already due to an error.

So changed the code to have the thread fill in/out
i2400mu->{tx,rx}_kthread under a spinlock; then the _release()
function will call kthread_stop() only if {rx,tx}_kthread is still
set.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>

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This commit is contained in:

Inaky Perez-Gonzalez 2009-10-08 08:11:38 +09:00

parent 0c96859d7a

commit 4a78fd9a73

2 changed files with 59 additions and 11 deletions

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35

drivers/net/wimax/i2400m/usb-rx.c

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35

drivers/net/wimax/i2400m/usb-tx.c

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