In link_set_dsc_pps_packet(), 'struct display_stream_compressor *dsc'
was dereferenced in a DC_LOGGER_INIT(dsc->ctx->logger); before the 'dsc'
NULL pointer check.
Fixes the below:
drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dpms.c:905 link_set_dsc_pps_packet() warn: variable dereferenced before check 'dsc' (see line 903)
Cc: stable@xxxxxxxxxxxxxxx
Cc: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Cc: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
Cc: Wenjing Liu <wenjing.liu@xxxxxxx>
Cc: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/link/link_dpms.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
index 3de148004c06..562eb79bfbc8 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
@@ -900,11 +900,12 @@ bool link_set_dsc_pps_packet(struct pipe_ctx *pipe_ctx, bool enable, bool immedi
{
struct display_stream_compressor *dsc = pipe_ctx->stream_res.dsc;
struct dc_stream_state *stream = pipe_ctx->stream;
- DC_LOGGER_INIT(dsc->ctx->logger);
if (!pipe_ctx->stream->timing.flags.DSC || !dsc)
return false;
+ DC_LOGGER_INIT(dsc->ctx->logger);
+
if (enable) {
struct dsc_config dsc_cfg;
uint8_t dsc_packed_pps[128];
--
2.34.1
