tdfxfb: replace busy waiting with cpu_relax
This patch replaces busy waiting with cpu_relax() call. This makes scrolling
faster.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/tdfxfb.c b/drivers/video/tdfxfb.c
index c7ec5f3..faac9b4 100644
--- a/drivers/video/tdfxfb.c
+++ b/drivers/video/tdfxfb.c
@@ -273,7 +273,8 @@
{
/* Note: The Voodoo3's onboard FIFO has 32 slots. This loop
* won't quit if you ask for more. */
- while ((tdfx_inl(par, STATUS) & 0x1f) < size - 1) ;
+ while ((tdfx_inl(par, STATUS) & 0x1f) < size - 1)
+ cpu_relax();
}
static int banshee_wait_idle(struct fb_info *info)