Commit 8532467c authored by Mikita Lipski's avatar Mikita Lipski Committed by Alex Deucher
Browse files

drm/amd/display: Set initial value to a divider 



[why/how]
Due to compiler optimization the values would be
passed to the division function uninitialized
causing a div by zero. Initialize the numerator
and denominator to 0 and 1 to prevent division
by zero.

Signed-off-by: default avatarMikita Lipski <mikita.lipski@amd.com>
Acked-by: default avatarQingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 712343cd

drivers/gpu/drm/amd/display/dc/core/dc_link.c

+2 −2
Original line number Diff line number Diff line
@@ -2891,8 +2891,8 @@ static struct fixed31_32 get_pbn_per_slot(struct dc_stream_state *stream) 
static struct fixed31_32 get_pbn_from_bw_in_kbps(uint64_t kbps)

{

	struct fixed31_32 peak_kbps;

	uint32_t numerator;

	uint32_t denominator;

	uint32_t numerator = 0;

	uint32_t denominator = 1;



	/*

	 * margin 5300ppm + 300ppm ~ 0.6% as per spec, factor is 1.006