diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2013-11-01 09:36:42 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2013-11-08 15:39:55 +1000 |
| commit | 687d8f66b1849a1da515bcbc791f84d7d6dcfa1c (patch) | |
| tree | d29da034aebade9fd60306ae9a7a5a6a9696fc1e /drivers/gpu | |
| parent | 9e2b734f1cc43e94558bfd2b779d8e493abea0f4 (diff) | |
| download | op-kernel-dev-687d8f66b1849a1da515bcbc791f84d7d6dcfa1c.zip op-kernel-dev-687d8f66b1849a1da515bcbc791f84d7d6dcfa1c.tar.gz | |
drm/nouveau/disp: log if DP link training fails
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/engine/disp/dport.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/dport.c b/drivers/gpu/drm/nouveau/core/engine/disp/dport.c index 054d9cf..15448b9 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/dport.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/dport.c @@ -308,7 +308,7 @@ nouveau_dp_train(struct nouveau_disp *disp, const struct nouveau_dp_func *func, while (*link_bw > (dp->dpcd[1] * 27000)) link_bw++; - while (link_bw[0]) { + while ((ret = -EIO) && link_bw[0]) { /* find minimum required lane count at this link rate */ dp->link_nr = dp->dpcd[2] & DPCD_RC02_MAX_LANE_COUNT; while ((dp->link_nr >> 1) * link_bw[0] > datarate) @@ -339,6 +339,8 @@ nouveau_dp_train(struct nouveau_disp *disp, const struct nouveau_dp_func *func, /* finish link training */ dp_set_training_pattern(dp, 0); + if (ret < 0) + ERR("link training failed\n"); /* execute post-train script from vbios */ dp_link_train_fini(dp); |
