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| author | Mario Limonciello <mario.limonciello@amd.com> | 2022-01-05 12:48:16 -0600 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-01-11 15:44:25 -0500 |
| commit | 63ad5371cd1e379519395c49a4b6a652c36c98e5 (patch) | |
| tree | ce6260d1aca4ef446f2287b023c9ded1585e3dfa | |
| parent | b54ce6c92cf57ff276e4539750c140c9c96416f3 (diff) | |
| download | linux-63ad5371cd1e379519395c49a4b6a652c36c98e5.tar.bz2 | |
drm/amd/display: explicitly set is_dsc_supported to false before use
When UBSAN is enabled a case is shown on unplugging the display that
this variable hasn't been initialized by `update_dsc_caps`, presumably
when the display was unplugged it wasn't copied from the DPCD.
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1956497
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index e6ad1d426ba3..b7dc98c9f08b 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6097,6 +6097,7 @@ static void update_dsc_caps(struct amdgpu_dm_connector *aconnector, struct dsc_dec_dpcd_caps *dsc_caps) { stream->timing.flags.DSC = 0; + dsc_caps->is_dsc_supported = false; if (aconnector->dc_link && (sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT || sink->sink_signal == SIGNAL_TYPE_EDP)) { |