diff options
| author | Haowen Bai <baihaowen@meizu.com> | 2022-03-24 17:46:02 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-03-31 23:05:54 -0400 |
| commit | e84c8ab52dc76b09cb1c8885950ad4eaaf340bf6 (patch) | |
| tree | fba563734137e91e1b9a7873eac09b7719c45b95 /drivers/gpu/drm/amd/display/dc/dce | |
| parent | 44e121fbf155edc93eceaae273038afbf90f52a7 (diff) | |
| download | linux-e84c8ab52dc76b09cb1c8885950ad4eaaf340bf6.tar.gz | |
drm/amd/display: Fix pointer dereferenced before checking
The value actual_pix_clk_100Hz is dereferencing pointer pix_clk_params
before pix_clk_params is being null checked. Fix this by assigning
pix_clk_params->requested_pix_clk_100hz to actual_pix_clk_100Hz only if
pix_clk_params is not NULL, otherwise just NULL.
Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c index cc5128e67daf..c36f8e829344 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c @@ -1254,7 +1254,7 @@ static uint32_t dcn3_get_pix_clk_dividers( struct pixel_clk_params *pix_clk_params, struct pll_settings *pll_settings) { - unsigned long long actual_pix_clk_100Hz = pix_clk_params->requested_pix_clk_100hz; + unsigned long long actual_pix_clk_100Hz = pix_clk_params ? pix_clk_params->requested_pix_clk_100hz : 0; struct dce110_clk_src *clk_src; clk_src = TO_DCE110_CLK_SRC(cs); |