From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Tue, 7 May 2013 20:57:08 +0000 (-0300)
Subject: [media] wl128x: do not call copy_to_user() while holding spinlocks
X-Git-Tag: v3.11-rc1~17^2~350
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5255e4d9dfe2e33a5d68c54f6d1bee28fc5edd66;p=pandora-kernel.git

[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>
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