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| author | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2018-07-20 03:31:55 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2018-08-06 21:17:52 +0300 |
| commit | 656921a51244b72cd1105df61b0af15825bddb72 (patch) | |
| tree | 35ea7e685cae3074bfe0243ad261966c2fe2974a /drivers/iommu/intel-svm.c | |
| parent | 15da09500a7053612e4ab049ff998e99a77a8df0 (diff) | |
| download | linux-656921a51244b72cd1105df61b0af15825bddb72.tar.xz | |
drm/i915: Fix psr sink status report.
First of all don't try to read dpcd if PSR is not even supported.
But also, if read failed return -EIO instead of reporting via a
backchannel.
v2: fix dev_priv: At this level m->private is the connector. (CI/DK)
don't convert dpcd read errors to EIO. (DK)
Fixes: 5b7b30864d1d ("drm/i915/psr: Split sink status into a separate debugfs node")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180720003155.16290-1-rodrigo.vivi@intel.com
(cherry picked from commit 7a72c78bdd0a1ea1d879610542679cc680398220)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/iommu/intel-svm.c')
0 files changed, 0 insertions, 0 deletions