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| author | Taimur Hassan <syed.hassan@amd.com> | 2023-06-20 17:00:28 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-07-18 11:13:55 -0400 |
| commit | ab02d4ae4a4313568761b4877a2eee3e7579ef34 (patch) | |
| tree | c3b4babd49eeab165ab8588062338386231e796b /drivers/gpu/drm/amd/display/dc/dcn10 | |
| parent | e198a746fc1bc009e3f0e7b9436553ccdd4f6cc1 (diff) | |
| download | linux-stable-ab02d4ae4a4313568761b4877a2eee3e7579ef34.tar.gz linux-stable-ab02d4ae4a4313568761b4877a2eee3e7579ef34.tar.bz2 linux-stable-ab02d4ae4a4313568761b4877a2eee3e7579ef34.zip | |
drm/amd/display: check TG is non-null before checking if enabled
[Why & How]
If there is no TG allocation we can dereference a NULL pointer when
checking if the TG is enabled.
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Alan Liu <haoping.liu@amd.com>
Signed-off-by: Taimur Hassan <syed.hassan@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn10')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index a50309039d08..9834b75f1837 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -3278,7 +3278,8 @@ void dcn10_wait_for_mpcc_disconnect( if (pipe_ctx->stream_res.opp->mpcc_disconnect_pending[mpcc_inst]) { struct hubp *hubp = get_hubp_by_inst(res_pool, mpcc_inst); - if (pipe_ctx->stream_res.tg->funcs->is_tg_enabled(pipe_ctx->stream_res.tg)) + if (pipe_ctx->stream_res.tg && + pipe_ctx->stream_res.tg->funcs->is_tg_enabled(pipe_ctx->stream_res.tg)) res_pool->mpc->funcs->wait_for_idle(res_pool->mpc, mpcc_inst); pipe_ctx->stream_res.opp->mpcc_disconnect_pending[mpcc_inst] = false; hubp->funcs->set_blank(hubp, true); |