[PATCH] drm/amdgpu: drm/amdgpu: always consider virualised device for checking post (v2)

[Pixel Ding]

From: pding <Pixel.Ding at amd.com>

The post checking on scratch registers isn't reliable for virtual function.

v2: only change in IGP reading bios.

Signed-off-by: pding <Pixel.Ding at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h        | 1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c   | 2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 0280ae5..caabc5b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1840,6 +1840,7 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring)
 /* Common functions */
 int amdgpu_gpu_reset(struct amdgpu_device *adev);
 bool amdgpu_need_backup(struct amdgpu_device *adev);
+bool amdgpu_vpost_needed(struct amdgpu_device *adev);
 void amdgpu_pci_config_reset(struct amdgpu_device *adev);
 bool amdgpu_need_post(struct amdgpu_device *adev);
 void amdgpu_update_display_priority(struct amdgpu_device *adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
index c21adf6..25f43eb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
@@ -99,7 +99,7 @@ static bool igp_read_bios_from_vram(struct amdgpu_device *adev)
 	resource_size_t size = 256 * 1024; /* ??? */
 
 	if (!(adev->flags & AMD_IS_APU))
-		if (amdgpu_need_post(adev))
+		if (amdgpu_vpost_needed(adev))
 			return false;
 
 	adev->bios = NULL;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index a601d87..098cd44 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -764,7 +764,7 @@ bool amdgpu_need_post(struct amdgpu_device *adev)
 
 }
 
-static bool amdgpu_vpost_needed(struct amdgpu_device *adev)
+bool amdgpu_vpost_needed(struct amdgpu_device *adev)
 {
 	if (amdgpu_sriov_vf(adev))
 		return false;
-- 
2.9.5