From: Ondrej Zary <linux@rainbow-software.org>
Date: Mon, 24 Aug 2015 19:37:25 +0000 (+0200)
Subject: tridentfb: fix hang on Blade3D with CONFIG_CC_OPTIMIZE_FOR_SIZE
X-Git-Tag: omap-for-v4.3/fixes-rc5~28^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7f2ea957c1152a7b57c22af2ae603bf66965c06e;p=pandora-kernel.git

tridentfb: fix hang on Blade3D with CONFIG_CC_OPTIMIZE_FOR_SIZE

When the kernel is compiled with -Os (CONFIG_CC_OPTIMIZE_FOR_SIZE), tridentfb
hangs the machine upon load with Blade3D cards unless acceleration is disabled.

This is caused by memcpy() which copies data byte-by-byte (rep movsb) when
compiled with -Os. The card does not like that - it requires 32-bit access.

Use iowrite_32() instead.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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