From: Krzysztof Helt <krzysztof.h1@wp.pl>

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>
---

 drivers/video/tdfxfb.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -puN drivers/video/tdfxfb.c~tdfxfb-replace-busy-waiting-with-cpu_relax drivers/video/tdfxfb.c
--- a/drivers/video/tdfxfb.c~tdfxfb-replace-busy-waiting-with-cpu_relax
+++ a/drivers/video/tdfxfb.c
@@ -273,7 +273,8 @@ static inline void banshee_make_room(str
 {
 	/* 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)
_