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| author | Olof Johansson <olof@lixom.net> | 2011-12-15 22:02:34 -0800 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2011-12-15 22:02:34 -0800 |
| commit | 02735a29d8ce882ec698803f064e17888874780c (patch) | |
| tree | 6a4afa3bc8b6d4334df24910a56f77adf126b0c7 /drivers/gpu/drm/radeon/r100.c | |
| parent | 8d685b7f4d9c9882442bf1b492558d5f17b694fa (diff) | |
| parent | 3d911ad22e8405c1a333a6812e405cb1a5ae9829 (diff) | |
Merge branch 'at91/defconfig' into next/cleanup
Diffstat (limited to 'drivers/gpu/drm/radeon/r100.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r100.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index ad158ea4990..bfc08f6320f 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -187,13 +187,18 @@ u32 r100_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base) { struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id]; u32 tmp = ((u32)crtc_base) | RADEON_CRTC_OFFSET__OFFSET_LOCK; + int i; /* Lock the graphics update lock */ /* update the scanout addresses */ WREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset, tmp); /* Wait for update_pending to go high. */ - while (!(RREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset) & RADEON_CRTC_OFFSET__GUI_TRIG_OFFSET)); + for (i = 0; i < rdev->usec_timeout; i++) { + if (RREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset) & RADEON_CRTC_OFFSET__GUI_TRIG_OFFSET) + break; + udelay(1); + } DRM_DEBUG("Update pending now high. Unlocking vupdate_lock.\n"); /* Unlock the lock, so double-buffering can take place inside vblank */ |