From 32e61361b82e7ad016a83345f66ccc68865f63f4 Mon Sep 17 00:00:00 2001 From: Ken Chalmers Date: Wed, 19 Dec 2018 14:50:20 -0500 Subject: [PATCH] drm/amd/display: Fix 64-bit division for 32-bit builds [Why] 32-bit builds break when doing 64-bit division directly. [How] Use the div_u64() function instead to perform the division. Fixes: https://lists.freedesktop.org/archives/dri-devel/2018-December/201008.html Signed-off-by: Ken Chalmers Reviewed-by: Leo Li Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dce80/dce80_timing_generator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dce80/dce80_timing_generator.c b/drivers/gpu/drm/amd/display/dc/dce80/dce80_timing_generator.c index 5c629ae..8b5ce55 100644 --- a/drivers/gpu/drm/amd/display/dc/dce80/dce80_timing_generator.c +++ b/drivers/gpu/drm/amd/display/dc/dce80/dce80_timing_generator.c @@ -94,7 +94,7 @@ static void program_pix_dur(struct timing_generator *tg, uint32_t pix_clk_100hz) if (pix_clk_100hz == 0) return; - pix_dur = 10000000000ull / pix_clk_100hz; + pix_dur = div_u64(10000000000ull, pix_clk_100hz); set_reg_field_value( value, -- 2.7.4