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| author |   John Barberiz <John.Barberiz@amd.com> | 2019-01-16 17:21:31 -0500 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2019-02-05 21:16:22 -0500 |
| commit | 9ca089925f0c318307881eadc0535e7c7a7b5e2d (patch) | |
| tree | a32ae72da07717bb2e7f17d9ec02b4bb29fd3958 | |
| parent | drm/amdgpu: cleanup VM dw estimation a bit (diff) | |
| download | linux-rng-9ca089925f0c318307881eadc0535e7c7a7b5e2d.tar.xz linux-rng-9ca089925f0c318307881eadc0535e7c7a7b5e2d.zip | |
drm/amd/display: Use udelay when waiting between aux retries
[Why]
"IRQ_HPD Pulse Length Test" DP compliance test
fails. Test complains that certain DPCD registers
are not read within 100 ms.
[How]
msleep is inaccurate for small values. Used udelay
instead for accuracy.
Signed-off-by: John Barberiz <John.Barberiz@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c index adbb22224e1a..4febf4ef7240 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c @@ -516,7 +516,7 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, } } - msleep(1); + udelay(1000); } return false; } |