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authorHarry Wentland <harry.wentland@amd.com>2018-04-10 16:06:34 -0400
committerAlex Deucher <alexander.deucher@amd.com>2018-05-15 13:44:14 -0500
commit403dc5e8aab7b3d18a625e516698ea49d2be432e (patch)
treeefb397ad060e98b250cc5ecf124bfb840a60c55e /drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
parentdrm/amd/display: dal 3.1.44 (diff)
downloadlinux-dev-403dc5e8aab7b3d18a625e516698ea49d2be432e.tar.xz
linux-dev-403dc5e8aab7b3d18a625e516698ea49d2be432e.zip
drm/amd/display: Use int for calculating vline start
We are not sure these calculations will never need negative numbers. Use signed integers and warn and cap at 0 if this ever happens. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c')
-rw-r--r--drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
index 2c5dbece928e..c734b7fa5835 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
@@ -96,10 +96,10 @@ static void optc1_disable_stereo(struct timing_generator *optc)
static uint32_t get_start_vline(struct timing_generator *optc, const struct dc_crtc_timing *dc_crtc_timing)
{
struct dc_crtc_timing patched_crtc_timing;
- uint32_t vesa_sync_start;
- uint32_t asic_blank_end;
- uint32_t interlace_factor;
- uint32_t vertical_line_start;
+ int vesa_sync_start;
+ int asic_blank_end;
+ int interlace_factor;
+ int vertical_line_start;
patched_crtc_timing = *dc_crtc_timing;
optc1_apply_front_porch_workaround(optc, &patched_crtc_timing);