diff options
| author | Adam Jackson <ajax@redhat.com> | 2011-07-26 19:39:46 (GMT) |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-01-17 15:47:00 (GMT) |
| commit | d7e96feab83d29e27d14c60f1fa7c716ef7880cd (patch) | |
| tree | 84e29428164c44545ff3d533d73034e61f12fc7b /drivers/gpu/drm/i915 | |
| parent | 092945e11c5b84f66dd08f0b87fb729715d377bc (diff) | |
| download | linux-fsl-qoriq-d7e96feab83d29e27d14c60f1fa7c716ef7880cd.tar.xz | |
drm/i915/dp: Check for AUXCH error before checking for success
This is paranoid, but I am entirely willing to believe the hardware
could come up with a condition where I get a status with both the 'done'
and 'receive error' bits set.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 2f47663..8f1148c 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -426,6 +426,10 @@ intel_dp_aux_ch(struct intel_dp *intel_dp, DP_AUX_CH_CTL_DONE | DP_AUX_CH_CTL_TIME_OUT_ERROR | DP_AUX_CH_CTL_RECEIVE_ERROR); + + if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | + DP_AUX_CH_CTL_RECEIVE_ERROR)) + continue; if (status & DP_AUX_CH_CTL_DONE) break; } |