diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/rs600.c')
-rw-r--r-- | drivers/gpu/drm/radeon/rs600.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c index 481b99e89f6..b1053d64042 100644 --- a/drivers/gpu/drm/radeon/rs600.c +++ b/drivers/gpu/drm/radeon/rs600.c | |||
@@ -62,6 +62,7 @@ u32 rs600_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base) | |||
62 | { | 62 | { |
63 | struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id]; | 63 | struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id]; |
64 | u32 tmp = RREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset); | 64 | u32 tmp = RREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset); |
65 | int i; | ||
65 | 66 | ||
66 | /* Lock the graphics update lock */ | 67 | /* Lock the graphics update lock */ |
67 | tmp |= AVIVO_D1GRPH_UPDATE_LOCK; | 68 | tmp |= AVIVO_D1GRPH_UPDATE_LOCK; |
@@ -74,7 +75,11 @@ u32 rs600_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base) | |||
74 | (u32)crtc_base); | 75 | (u32)crtc_base); |
75 | 76 | ||
76 | /* Wait for update_pending to go high. */ | 77 | /* Wait for update_pending to go high. */ |
77 | while (!(RREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset) & AVIVO_D1GRPH_SURFACE_UPDATE_PENDING)); | 78 | for (i = 0; i < rdev->usec_timeout; i++) { |
79 | if (RREG32(AVIVO_D1GRPH_UPDATE + radeon_crtc->crtc_offset) & AVIVO_D1GRPH_SURFACE_UPDATE_PENDING) | ||
80 | break; | ||
81 | udelay(1); | ||
82 | } | ||
78 | DRM_DEBUG("Update pending now high. Unlocking vupdate_lock.\n"); | 83 | DRM_DEBUG("Update pending now high. Unlocking vupdate_lock.\n"); |
79 | 84 | ||
80 | /* Unlock the lock, so double-buffering can take place inside vblank */ | 85 | /* Unlock the lock, so double-buffering can take place inside vblank */ |