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/openbmc/linux/drivers/video/fbdev/ |
H A D | tridentfb.c | 7f2ea957 Mon Aug 24 14:37:25 CDT 2015 Ondrej Zary <linux@rainbow-software.org> 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> 7f2ea957 Mon Aug 24 14:37:25 CDT 2015 Ondrej Zary <linux@rainbow-software.org> 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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