From: Monk Liu <Monk.Liu@amd.com>
Date: Tue, 17 Oct 2017 19:18:56 +0800
Subject: drm/amdgpu:fix wb_clear
Git-commit: 63ae07ca4fb4adcacc19272b05b5c3d398e94a56
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Properly shift the index when clearing so we clear
the right bit
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -546,7 +546,7 @@ int amdgpu_wb_get(struct amdgpu_device *
if (offset < adev->wb.num_wb) {
__set_bit(offset, adev->wb.used);
- *wb = offset * 8; /* convert to dw offset */
+ *wb = offset << 3; /* convert to dw offset */
return 0;
} else {
return -EINVAL;
@@ -564,7 +564,7 @@ int amdgpu_wb_get(struct amdgpu_device *
void amdgpu_wb_free(struct amdgpu_device *adev, u32 wb)
{
if (wb < adev->wb.num_wb)
- __clear_bit(wb, adev->wb.used);
+ __clear_bit(wb >> 3, adev->wb.used);
}
/**