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amdgpu/dce11: Remove division from dce_v11_0_vblank_wait() 

Mimics odd behaviour where (i++ % 100 == 0) is true in the first iteration of each loop...

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tom St Denis 2015-12-15 13:01:49 -05:00 committed by Alex Deucher
parent 691ca86a3a
commit 9e4e1ae82f
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
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@ -211,7 +211,7 @@ static bool dce_v11_0_is_counter_moving(struct amdgpu_device *adev, int crtc)
*/
static void dce_v11_0_vblank_wait(struct amdgpu_device *adev, int crtc)
{
unsigned i = 0;
unsigned i = 100;
if (crtc >= adev->mode_info.num_crtc)
return;
@ -223,14 +223,16 @@ static void dce_v11_0_vblank_wait(struct amdgpu_device *adev, int crtc)
* wait for another frame.
*/
while (dce_v11_0_is_in_vblank(adev, crtc)) {
if (i++ % 100 == 0) {
if (i++ == 100) {
i = 0;
if (!dce_v11_0_is_counter_moving(adev, crtc))
break;
}
}
while (!dce_v11_0_is_in_vblank(adev, crtc)) {
if (i++ % 100 == 0) {
if (i++ == 100) {
i = 0;
if (!dce_v11_0_is_counter_moving(adev, crtc))
break;
}