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drm/amdgpu/vcn:Fix uninitialized symbol error 

ret_code should be initialized with 0. The check of read/write
ptr should be activate when UVD_POWER_STATUS_TILES is off.

Signed-off-by: James Zhu <James.Zhu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
James Zhu 2018-10-16 10:06:00 -04:00 committed by Alex Deucher
parent d344b21bf4
commit 8e16695b4e
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
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@ -1165,14 +1165,14 @@ static int vcn_v1_0_stop_spg_mode(struct amdgpu_device *adev)
static int vcn_v1_0_stop_dpg_mode(struct amdgpu_device *adev)
{
int ret_code;
int ret_code = 0;
/* Wait for power status to be UVD_POWER_STATUS__UVD_POWER_STATUS_TILES_OFF */
SOC15_WAIT_ON_RREG(UVD, 0, mmUVD_POWER_STATUS,
UVD_POWER_STATUS__UVD_POWER_STATUS_TILES_OFF,
UVD_POWER_STATUS__UVD_POWER_STATUS_MASK, ret_code);
if (ret_code) {
if (!ret_code) {
int tmp = RREG32_SOC15(UVD, 0, mmUVD_RBC_RB_WPTR) & 0x7FFFFFFF;
/* wait for read ptr to be equal to write ptr */
SOC15_WAIT_ON_RREG(UVD, 0, mmUVD_RBC_RB_RPTR, tmp, 0xFFFFFFFF, ret_code);