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From 6e96f13398d5b7ac8d9efc72d4e85d945ca4b0e3 Mon Sep 17 00:00:00 2001
From: Monk Liu <Monk.Liu@amd.com>
Date: Tue, 17 Oct 2017 19:18:56 +0800
Subject: [PATCH 2040/4131] drm/amdgpu:fix wb_clear
Properly shift the index when clearing so we clear
the right bit
Change-Id: I6d50cc769ee29bf13524c83105d5004b0a2d85e3
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 2131134..199bb88 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -547,7 +547,7 @@ int amdgpu_wb_get(struct amdgpu_device *adev, u32 *wb)
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;
@@ -565,7 +565,7 @@ int amdgpu_wb_get(struct amdgpu_device *adev, u32 *wb)
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);
}
/**
--
2.7.4
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