tree 752d04c450af3b822dc65df7eaa1068586e4c51d
parent 88107675fba0b83d45744e9f2414dfea21686f87
author Alexey Khoroshilov <khoroshilov@ispras.ru> 1367960228 -0300
committer Mauro Carvalho Chehab <mchehab@redhat.com> 1369135411 -0300

[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>