Commit e84c8ab5 authored by Haowen Bai's avatar Haowen Bai Committed by Alex Deucher
Browse files

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: default avatarHaowen Bai <baihaowen@meizu.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 44e121fb

drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -1254,7 +1254,7 @@ static uint32_t dcn3_get_pix_clk_dividers( 
		struct pixel_clk_params *pix_clk_params,

		struct pixel_clk_params *pix_clk_params,

		struct pll_settings *pll_settings)

		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;

	struct dce110_clk_src *clk_src;





	clk_src = TO_DCE110_CLK_SRC(cs);

	clk_src = TO_DCE110_CLK_SRC(cs);