ar9170: fix hang on stop

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This patch fixes a locking problem which freezes the network core.

The deadlock goes as follows:
- ar9170_op_stop - is called
1. change the state to IDLE
2. > take the MUTEX <
3. cancel_SYNC all pending work, which means
    "block until a work_struct's callback has terminated"
=>  if filter_config_work was queued it tries to get the MUTEX,
       before checking the device state...

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

...

This commit is contained in:

Christian Lamparter 2009-03-28 01:46:14 +01:00 • committed by John W. Linville

parent 807e37394b

commit 32c1628f15

1 changed files with 4 additions and 3 deletions

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drivers/net/wireless/ar9170/main.c

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