Commit 4a9054dd authored by Harry Wentland's avatar Harry Wentland Committed by Alex Deucher
Browse files

drm/amd/display: Fix 64-bit division, yet again 



Also make the code somewhat more readable.

Signed-off-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent e166ad43

drivers/gpu/drm/amd/display/modules/freesync/freesync.c

+11 −4
Original line number Diff line number Diff line
@@ -210,6 +210,8 @@ bool mod_freesync_add_stream(struct mod_freesync *mod_freesync, 
	struct core_freesync *core_freesync = NULL;

	int persistent_freesync_enable = 0;

	struct persistent_data_flag flag;

	unsigned int nom_refresh_rate_micro_hz;

	unsigned long long temp;



	if (mod_freesync == NULL)

		return false;
@@ -262,11 +264,16 @@ bool mod_freesync_add_stream(struct mod_freesync *mod_freesync, 
					enable_for_video = false;

		}



		unsigned int nom_refresh_rate_micro_hz = (unsigned int)

				(((unsigned long long) core_stream->public.timing.pix_clk_khz) * 1000ULL * 1000ULL * 1000ULL

				/ core_stream->public.timing.h_total / core_stream->public.timing.v_total);

		temp = core_stream->public.timing.pix_clk_khz;

		temp *= 1000ULL * 1000ULL * 1000ULL;

		temp = div_u64(temp, core_stream->public.timing.h_total);

		temp = div_u64(temp, core_stream->public.timing.v_total);



		if (caps->supported && nom_refresh_rate_micro_hz >= caps->min_refresh_in_micro_hz && nom_refresh_rate_micro_hz <= caps->max_refresh_in_micro_hz)

		nom_refresh_rate_micro_hz = (unsigned int) temp;



		if (caps->supported &&

		    nom_refresh_rate_micro_hz >= caps->min_refresh_in_micro_hz &&

		    nom_refresh_rate_micro_hz <= caps->max_refresh_in_micro_hz)

			core_stream->public.ignore_msa_timing_param = 1;



		core_freesync->num_entities++;