diff options
| author | Tomas Winkler <tomas.winkler@intel.com> | 2017-03-05 21:40:41 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-16 10:47:53 +0900 |
| commit | a733ded50b6ea846200073e7381a302df71e13b3 (patch) | |
| tree | c607f1208e4cd54539e099d5dab4772e56e1beb5 /drivers/misc/mei/bus-fixup.c | |
| parent | 603980cecc71564e1c6289cd4d0704f11788dc3a (diff) | |
mei: fix deadlock on mei reset
This patch fixes 'mei: synchronize irq before initiating a reset'
The patch had introduced a deadlock between irq thread and mei_reset()
as they are both holding the same device lock.
---> device_lock:
mei_reset()
<---- interrupt thread
device_lock
---> synchornize_irq()
wait on interrupt thread == (dead lock)
The fix is to call synchronize_irq
prior to call locked mei_reset function.
Cc: <stable@vger.kernel.org> #4.10+
Fixes: f302bb0de6ac (mei: synchronize irq before initiating a reset)
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/bus-fixup.c')
0 files changed, 0 insertions, 0 deletions