diff options
| author | Sung-huai Wang <danny.wang@amd.com> | 2023-06-06 14:28:38 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-06-23 15:40:40 -0400 |
| commit | 0f48a4b83610cb0e4e0bc487800ab69f51b4aca6 (patch) | |
| tree | 00cfda4acde2d68246d659cc05b788cdbcc3e0ee /drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c | |
| parent | a99a4ff6ef205d125002fc7e0857074e4e6597b6 (diff) | |
drm/amd/display: add a NULL pointer check
[Why & How]
We have to check if stream is properly initialized before calling
find_matching_pll(), otherwise we might end up trying to deferecence a
NULL pointer.
Cc: stable@vger.kernel.org # 6.1+
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Sung-huai Wang <danny.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c b/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c index 808855886183..e115ff91aaaa 100644 --- a/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c @@ -974,10 +974,12 @@ enum dc_status resource_map_phy_clock_resources( || dc_is_virtual_signal(pipe_ctx->stream->signal)) pipe_ctx->clock_source = dc->res_pool->dp_clock_source; - else - pipe_ctx->clock_source = find_matching_pll( - &context->res_ctx, dc->res_pool, - stream); + else { + if (stream && stream->link && stream->link->link_enc) + pipe_ctx->clock_source = find_matching_pll( + &context->res_ctx, dc->res_pool, + stream); + } if (pipe_ctx->clock_source == NULL) return DC_NO_CLOCK_SOURCE_RESOURCE; |