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| author | Ondrej Zary <linux@rainbow-software.org> | 2015-08-24 21:37:25 +0200 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2015-09-24 14:35:36 +0300 |
| commit | 7f2ea957c1152a7b57c22af2ae603bf66965c06e (patch) | |
| tree | b527fb19e635db409917a68e5976f3faa866841b | |
| parent | 8e9191ac7b29a250b2baab7069ea9cc614c5133c (diff) | |
| download | linux-7f2ea957c1152a7b57c22af2ae603bf66965c06e.tar.gz linux-7f2ea957c1152a7b57c22af2ae603bf66965c06e.tar.bz2 linux-7f2ea957c1152a7b57c22af2ae603bf66965c06e.zip | |
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>
| -rw-r--r-- | drivers/video/fbdev/tridentfb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/video/fbdev/tridentfb.c b/drivers/video/fbdev/tridentfb.c index 7ed9a227f5ea..742971304717 100644 --- a/drivers/video/fbdev/tridentfb.c +++ b/drivers/video/fbdev/tridentfb.c @@ -226,7 +226,7 @@ static void blade_image_blit(struct tridentfb_par *par, const char *data, writemmr(par, DST1, point(x, y)); writemmr(par, DST2, point(x + w - 1, y + h - 1)); - memcpy(par->io_virt + 0x10000, data, 4 * size); + iowrite32_rep(par->io_virt + 0x10000, data, size); } static void blade_copy_rect(struct tridentfb_par *par, |