From: Jimmy Kizito Jimmy.Kizito@amd.com
[ Upstream commit 60f39edd897ea134a4ddb789a6795681691c3183 ]
[Why] Links which are dynamically assigned link encoders have their link encoder set to NULL.
[How] Check that a pointer to a link_encoder object is non-NULL before using it.
Reviewed-by: Aric Cyr aric.cyr@amd.com Reviewed-by: Meenakshikumar Somasundaram meenakshikumar.somasundaram@amd.com Acked-by: Rodrigo Siqueira Rodrigo.Siqueira@amd.com Signed-off-by: Jimmy Kizito Jimmy.Kizito@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 2 +- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index 6d655e158267a..61c18637f84dc 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -4690,7 +4690,7 @@ enum dc_status dp_set_fec_ready(struct dc_link *link, bool ready) link_enc->funcs->fec_set_ready(link_enc, true); link->fec_state = dc_link_fec_ready; } else { - link_enc->funcs->fec_set_ready(link->link_enc, false); + link_enc->funcs->fec_set_ready(link_enc, false); link->fec_state = dc_link_fec_not_ready; dm_error("dpcd write failed to set fec_ready"); } 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 df8a7718a85fc..3af49cdf89ebd 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 @@ -1522,7 +1522,7 @@ void dcn10_power_down_on_boot(struct dc *dc) for (i = 0; i < dc->link_count; i++) { struct dc_link *link = dc->links[i];
- if (link->link_enc->funcs->is_dig_enabled && + if (link->link_enc && link->link_enc->funcs->is_dig_enabled && link->link_enc->funcs->is_dig_enabled(link->link_enc) && dc->hwss.power_down) { dc->hwss.power_down(dc);