[media] wl128x: do not call copy_to_user() while holding spinlocks
authorAlexey Khoroshilov <khoroshilov@ispras.ru>
Tue, 7 May 2013 20:57:08 +0000 (17:57 -0300)
committerMauro Carvalho Chehab <mchehab@redhat.com>
Tue, 21 May 2013 11:23:31 +0000 (08:23 -0300)
commit5255e4d9dfe2e33a5d68c54f6d1bee28fc5edd66
tree752d04c450af3b822dc65df7eaa1068586e4c51d
parent88107675fba0b83d45744e9f2414dfea21686f87
[media] wl128x: do not call copy_to_user() while holding spinlocks

copy_to_user() must not be called with spinlocks held, but it is in
fmc_transfer_rds_from_internal_buff().
The patch copies data to tmpbuf, releases spinlock and then passes it to userspace.
By the way there is a small unification: replace a couple of hardcoded constants by a macro.
Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/radio/wl128x/fmdrv_common.c