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| author | Bing Zhao <bzhao@marvell.com> | 2013-04-01 12:44:46 -0700 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-04-08 15:28:37 -0400 |
| commit | 9908b07465556d4c96685d7f1ead0e17b01c662d (patch) | |
| tree | 6361c56ff62efdeccfaa95ba52069eb42721bd00 /mm/mincore.c | |
| parent | 84bcc0c3c4b8ca4c0abed2d2dd63b7ce04f8be0e (diff) | |
| download | blackbird-obmc-linux-9908b07465556d4c96685d7f1ead0e17b01c662d.tar.gz blackbird-obmc-linux-9908b07465556d4c96685d7f1ead0e17b01c662d.zip | |
mwifiex: fix negative cmd_pending count
cmd_pending is increased in mwifiex_wait_queue_complete() and
decreased in mwifiex_complete_cmd() currently.
If there are two or more commands in the cmd_pending_q the main
worker thread will pick up next command from cmd_pending_q
automatically after finishing current command. As a result
mwifiex_wait_queue_complete() will not be called because
the command is alreay completed. This leads to a negative
number in cmd_pending count.
Fix it by increasing cmd_pending when a cmd is queued into
cmd_pending_q and decreasing when that cmd is recycled. For scan
commands we don't perform inc/dec operations until it's moved
from scan_pending_q to cmd_pending_q. This covers both
synchronous and asynchronous commands.
Reported-by: Daniel Drake <dsd@laptop.org>
Tested-by: Daniel Drake <dsd@laptop.org>
Tested-by: Marco Cesarano <marco@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'mm/mincore.c')
0 files changed, 0 insertions, 0 deletions
