From: Chunming Zhou <David1.Zhou@xxxxxxx>
Re-enable bus mastering after GPU reset. We disable it
at the top of these functions, so balance them by
re-enabling it.
Signed-off-by: Chunming Zhou <David1.Zhou@xxxxxxx>
eviewed-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/cik.c | 2 ++
drivers/gpu/drm/amd/amdgpu/vi.c | 5 ++++-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c
index 924c85c..9f61cdc 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik.c
@@ -1173,6 +1173,8 @@ static int cik_gpu_pci_config_reset(struct amdgpu_device *adev)
/* wait for asic to come out of reset */
for (i = 0; i < adev->usec_timeout; i++) {
if (RREG32(mmCONFIG_MEMSIZE) != 0xffffffff) {
+ /* enable BM */
+ pci_set_master(adev->pdev);
r = 0;
break;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c
index dcc937e..b102d31 100644
--- a/drivers/gpu/drm/amd/amdgpu/vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/vi.c
@@ -598,8 +598,11 @@ static int vi_gpu_pci_config_reset(struct amdgpu_device *adev)
/* wait for asic to come out of reset */
for (i = 0; i < adev->usec_timeout; i++) {
- if (RREG32(mmCONFIG_MEMSIZE) != 0xffffffff)
+ if (RREG32(mmCONFIG_MEMSIZE) != 0xffffffff) {
+ /* enable BM */
+ pci_set_master(adev->pdev);
return 0;
+ }
udelay(1);
}
return -EINVAL;
--
2.5.5
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