Reviewed-by: Jim Qu <Jim.Qu at amd.com>
Thanks
JimQu
________________________________________
å??件人: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> 代表 Alex Deucher <alexdeucher at gmail.com>
å??é??æ?¶é?´: 2017å¹´3æ??29æ?¥ 0:21
�件人: amd-gfx at lists.freedesktop.org
æ??é??: Deucher, Alexander
主�: [PATCH] drm/amdgpu: refine the logic in amdgpu_need_post()
We check the mem config register to make sure it's been
programmed by the vbios to determine if we need to post
so we check for a non-0 value. However, when the asic
comes out of reset, we may see all ones here, so check
for that too.
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 2a5af62..4bf1c8f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -719,7 +719,7 @@ bool amdgpu_need_post(struct amdgpu_device *adev)
/* then check MEM_SIZE, in case the crtcs are off */
reg = amdgpu_asic_get_config_memsize(adev);
- if (reg)
+ if ((reg != 0) && (reg != 0xffffffff))
return false;
return true;
--
2.5.5
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