From 9ed176bcc3dbd8042ce198f2a167d8ed318585f2 Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Mon, 12 Mar 2018 19:50:38 +0800 Subject: [PATCH 3799/4131] drm/amdgpu: Plus NULL function pointer check MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: I17df856d137b24e24575722b06650e4136fdb1e0 Reviewed-by: Alex Deucher Reviewed-by: Christian König Reviewed-by: Evan Quan Signed-off-by: Rex Zhu --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 44ea5c9..92e6795 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1461,7 +1461,8 @@ static int amdgpu_device_ip_late_set_cg_state(struct amdgpu_device *adev) continue; /* skip CG for VCE/UVD, it's handled specially */ if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_UVD && - adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCE) { + adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCE && + adev->ip_blocks[i].version->funcs->set_clockgating_state) { /* enable clockgating to save power */ r = adev->ip_blocks[i].version->funcs->set_clockgating_state((void *)adev, AMD_CG_STATE_GATE); @@ -1510,7 +1511,8 @@ static int amdgpu_device_ip_fini(struct amdgpu_device *adev) for (i = 0; i < adev->num_ip_blocks; i++) { if (!adev->ip_blocks[i].status.hw) continue; - if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC) { + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC && + adev->ip_blocks[i].version->funcs->set_clockgating_state) { /* ungate blocks before hw fini so that we can shutdown the blocks safely */ r = adev->ip_blocks[i].version->funcs->set_clockgating_state((void *)adev, AMD_CG_STATE_UNGATE); @@ -1625,7 +1627,8 @@ int amdgpu_device_ip_suspend(struct amdgpu_device *adev) if (!adev->ip_blocks[i].status.valid) continue; /* ungate blocks so that suspend can properly shut them down */ - if (i != AMD_IP_BLOCK_TYPE_SMC) { + if (i != AMD_IP_BLOCK_TYPE_SMC && + adev->ip_blocks[i].version->funcs->set_clockgating_state) { r = adev->ip_blocks[i].version->funcs->set_clockgating_state((void *)adev, AMD_CG_STATE_UNGATE); if (r) { -- 2.7.4