drm/i915: use msleep for intel_wait_for_vblank · 311089d3d3 - Gogs

drm/i915: use msleep for intel_wait_for_vblank

20ms delay is quite big and the routine isn't called in atomic context.
better use msleep to let other tasks run. This can reduce cpu time used
by Xorg, so potentially boost boot.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

Shaohua Li 15 years ago

parent

1991bdfaf5

commit

311089d3d3

1 changed files with 1 additions and 1 deletions

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							+ 1
							
							- 1
						
drivers/gpu/drm/i915/intel_display.c
							 
								View File
							
				@@ -950,7 +950,7 @@ void
			
				 intel_wait_for_vblank(struct drm_device *dev)
			
				 {
			
				 	/* Wait for 20ms, i.e. one cycle at 50hz. */
			
				-	mdelay(20);
			
				+	msleep(20);
			
				 }
			
				 /* Parameters have changed, update FBC info */