From: Sylwester Nawrocki <s.nawrocki@samsung.com>
Date: Thu, 22 Nov 2012 14:12:16 +0000 (-0300)
Subject: [media] s5p-fimc: Don't use mutex_lock_interruptible() in device release()
X-Git-Tag: v3.7-rc8~2^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba6b372cf0af564bdc6c14bf68e078ae34bef222;p=pandora-kernel.git

[media] s5p-fimc: Don't use mutex_lock_interruptible() in device release()

Use uninterruptible mutex_lock in the release() file op to make
sure all resources are properly freed when a process is being
terminated. Returning -ERESTARTSYS has no effect for a terminating
process and this caused driver resources not to be released. Not
releasing the buffer queue also prevented other drivers to free
memory, e.g. in MMAP -> USERPTR scenario.
This patch is required for stable kernels v3.6+.

Reported-by: Kamil Debski <k.debski@samsung.com>
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

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