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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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@ -226,7 +226,7 @@ static void blade_image_blit(struct tridentfb_par *par, const char *data,
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writemmr(par, DST1, point(x, y));
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writemmr(par, DST2, point(x + w - 1, y + h - 1));
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memcpy(par->io_virt + 0x10000, data, 4 * size);
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iowrite32_rep(par->io_virt + 0x10000, data, size);
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}
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static void blade_copy_rect(struct tridentfb_par *par,
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