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@xxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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 2c7eb98..4db45bb 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
@@ -1162,7 +1162,7 @@ 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);
--
2.7.4
