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authorKrzysztof Helt <krzysztof.h1@wp.pl>2007-10-16 01:29:26 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:19 -0700
commitf67fd7c10f2eb16e6c70fd99e97a148e19ac5a55 (patch)
tree5c6f18432f7737c3b961640fc412026a153e9682 /drivers/video/tdfxfb.c
parent366367bdefcc924f2e17067a4624c92b78d01299 (diff)
downloadlinux-f67fd7c10f2eb16e6c70fd99e97a148e19ac5a55.tar.gz
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>
Diffstat (limited to 'drivers/video/tdfxfb.c')
-rw-r--r--drivers/video/tdfxfb.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/video/tdfxfb.c b/drivers/video/tdfxfb.c
index c7ec5f38260..faac9b469ea 100644
--- a/drivers/video/tdfxfb.c
+++ b/drivers/video/tdfxfb.c
@@ -273,7 +273,8 @@ static inline void banshee_make_room(struct tdfx_par *par, int size)
{
/* 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)