drm/amd/amdgpu: sdma resume fail during S4 on CI
authorjimqu <Jim.Qu@amd.com>
Tue, 30 Aug 2016 00:59:42 +0000 (08:59 +0800)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 31 Aug 2016 16:44:45 +0000 (12:44 -0400)
SDMA could be fail in the thaw() and restore() processes, do software reset
if each SDMA engine is busy.

Signed-off-by: JimQu <Jim.Qu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
drivers/gpu/drm/amd/amdgpu/cik_sdma.c

index ee6466912497b7cfc608db429e144d3a2dc3387e..77fdd9911c3cbe1268bb0c841edd6089ee058e18 100644 (file)
@@ -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");
@@ -1037,6 +1038,8 @@ 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);
 }