From: Sergio Aguirre <saaguirre@ti.com>
Date: Fri, 2 Oct 2009 22:26:46 +0000 (-0700)
Subject: omapfb: Condition mutex acquisition
X-Git-Tag: v2.6.32-omap1~11^2^2~1^2^2^2^2^2~8^2^2~18^2~2^2^2~2^2^2^2^2~16^2^2~2^2~2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6c5692b37d49a16035c0811f817f50f1f894ebf3;p=pandora-kernel.git

omapfb: Condition mutex acquisition

This fixes a bug introduced by this commit ID:

  commit 537a1bf059fa312355696fa6db80726e655e7f17
  Author: Krzysztof Helt <krzysztof.h1@wp.pl>
  Date:   Tue Jun 30 11:41:29 2009 -0700

    fbdev: add mutex for fb_mmap locking

In which a mutex was added when changing smem_start and smem_len fields,
so the mutex inside the fb_mmap() call is actually used.

The problem was that set_fb_fix, which modifies the above 2 fields,
was called before and after registering the framebuffer,
which when used before registration, lead to a failed attempt to
use an uninitialized mutex.

Solution: Don't use mutex before framebuffer registration.

Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Acked-by: Imre Deak <imre.deak@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

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