diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-13 15:52:12 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-13 15:52:12 -0700 |
| commit | ca17749259d26f7ddbb0678790d5d534018d0a6b (patch) | |
| tree | 730e0bd336e78d673760df2b4116277af1c8c495 /drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c | |
| parent | 07584d4a356ef52c084e1e4fedc22858ffc2f8b2 (diff) | |
| parent | 1795cd9b3a91d4b5473c97f491d63892442212ab (diff) | |
Merge 3.16-rc5 into tty-next.
We want those fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c b/drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c index 52c299c3d30..eb2d7789555 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c @@ -34,7 +34,7 @@ nvkm_output_dp_train(struct nvkm_output *base, u32 datarate, bool wait) struct nvkm_output_dp *outp = (void *)base; bool retrain = true; u8 link[2], stat[3]; - u32 rate; + u32 linkrate; int ret, i; /* check that the link is trained at a high enough rate */ @@ -44,8 +44,10 @@ nvkm_output_dp_train(struct nvkm_output *base, u32 datarate, bool wait) goto done; } - rate = link[0] * 27000 * (link[1] & DPCD_LC01_LANE_COUNT_SET); - if (rate < ((datarate / 8) * 10)) { + linkrate = link[0] * 27000 * (link[1] & DPCD_LC01_LANE_COUNT_SET); + linkrate = (linkrate * 8) / 10; /* 8B/10B coding overhead */ + datarate = (datarate + 9) / 10; /* -> decakilobits */ + if (linkrate < datarate) { DBG("link not trained at sufficient rate\n"); goto done; } |