[PATCH 2/3] drm/amd/amdgpu: sdma resume fail during S4 on CI

[Jim.Qu@xxxxxxx (jimqu)]

SDMA could be fail in the thaw() and restore() processes, do software reset
if each SDMA engine is busy.

Change-Id: Iaff231330c256fbd297f2a98edb2d956bd0d78f8
Signed-off-by: JimQu <Jim.Qu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/cik_sdma.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
index e71cd12..5d025d0 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
@@ -52,6 +52,7 @@ static void cik_sdma_set_ring_funcs(struct amdgpu_device *adev);
 static void cik_sdma_set_irq_funcs(struct amdgpu_device *adev);
 static void cik_sdma_set_buffer_funcs(struct amdgpu_device *adev);
 static void cik_sdma_set_vm_pte_funcs(struct amdgpu_device *adev);
+static int cik_sdma_soft_reset(void *handle);
 
 MODULE_FIRMWARE("radeon/bonaire_sdma.bin");
 MODULE_FIRMWARE("radeon/bonaire_sdma1.bin");
@@ -998,6 +999,8 @@ static int cik_sdma_resume(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	cik_sdma_soft_reset(handle);
+
 	return cik_sdma_hw_init(adev);
 }
 
-- 
1.9.1