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| author | Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com> | 2021-08-13 13:09:25 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-09-14 15:57:09 -0400 |
| commit | 13900e6fde3f91ea34a586002d592a2b20e1142e (patch) | |
| tree | 27a7775ac467e671ca0b27b82086b199074eacf9 /drivers | |
| parent | 5e1a9a3ed65a906481bea56eaae77a2ba01ef2b1 (diff) | |
| download | linux-stable-13900e6fde3f91ea34a586002d592a2b20e1142e.tar.gz linux-stable-13900e6fde3f91ea34a586002d592a2b20e1142e.tar.bz2 linux-stable-13900e6fde3f91ea34a586002d592a2b20e1142e.zip | |
drm/amd/display: Fix for null pointer access for ddc pin and aux engine.
[Why]
Need a check for NULL pointer access for ddc pin and aux engine.
[How]
Adding a check for ddc pin and aux engine accesses.
Reviewed-by: Jimmy Kizito <jimmy.kizito@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/include/dal_asic_id.h | 2 |
3 files changed, 10 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c index c5f61be1f6b5..5bfdc66b5867 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c @@ -449,9 +449,7 @@ static void update_config(void *handle, struct cp_psp_stream_config *config) struct mod_hdcp_link *link = &hdcp_work[link_index].link; struct drm_connector_state *conn_state; struct dc_sink *sink = NULL; -#if defined(CONFIG_DRM_AMD_DC_DCN3_1) bool link_is_hdcp14 = false; -#endif if (config->dpms_off) { hdcp_remove_display(hdcp_work, link_index, aconnector); diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c index e14f99b4b0c3..4a3b94fa3e40 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c @@ -689,8 +689,8 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, enum aux_return_code_type operation_result; bool retry_on_defer = false; struct ddc *ddc_pin = ddc->ddc_pin; - struct dce_aux *aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; - struct aux_engine_dce110 *aux110 = FROM_AUX_ENGINE(aux_engine); + struct dce_aux *aux_engine = NULL; + struct aux_engine_dce110 *aux110 = NULL; uint32_t defer_time_in_ms = 0; int aux_ack_retries = 0, @@ -699,6 +699,11 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, aux_timeout_retries = 0, aux_invalid_reply_retries = 0; + if (ddc_pin) { + aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; + aux110 = FROM_AUX_ENGINE(aux_engine); + } + if (!payload->reply) { payload_reply = false; payload->reply = &reply; @@ -765,7 +770,8 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_AUX_DEFER"); /* polling_timeout_period is in us */ - defer_time_in_ms += aux110->polling_timeout_period / 1000; + if (aux110) + defer_time_in_ms += aux110->polling_timeout_period / 1000; ++aux_defer_retries; fallthrough; case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER: diff --git a/drivers/gpu/drm/amd/display/include/dal_asic_id.h b/drivers/gpu/drm/amd/display/include/dal_asic_id.h index 381c17caace1..3d2f0817e40a 100644 --- a/drivers/gpu/drm/amd/display/include/dal_asic_id.h +++ b/drivers/gpu/drm/amd/display/include/dal_asic_id.h @@ -227,7 +227,7 @@ enum { #define FAMILY_YELLOW_CARP 146 #define YELLOW_CARP_A0 0x01 -#define YELLOW_CARP_B0 0x02 // TODO: DCN31 - update with correct B0 ID +#define YELLOW_CARP_B0 0x20 #define YELLOW_CARP_UNKNOWN 0xFF #ifndef ASICREV_IS_YELLOW_CARP |