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drm/amd/amdgpu: Simplify gfx_v9_0_wait_for_idle()

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Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tom St Denis 2017-08-31 09:48:11 -04:00 committed by Alex Deucher
parent 78888cff5c
commit 2b9bdfa70f
1 changed files with 1 additions and 6 deletions
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7
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
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@ -2937,15 +2937,10 @@ static bool gfx_v9_0_is_idle(void *handle)
static int gfx_v9_0_wait_for_idle(void *handle)
{
unsigned i;
u32 tmp;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
for (i = 0; i < adev->usec_timeout; i++) {
/* read MC_STATUS */
tmp = RREG32_SOC15(GC, 0, mmGRBM_STATUS) &
GRBM_STATUS__GUI_ACTIVE_MASK;
if (!REG_GET_FIELD(tmp, GRBM_STATUS, GUI_ACTIVE))
if (gfx_v9_0_is_idle(handle))
return 0;
udelay(1);
}