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From: "Kuehling, Felix" <Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
To: "amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org"
	<amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>
Cc: "Kuehling, Felix" <Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>,
	Joerg Roedel <jroedel-l3A5Bk7waGM@public.gmane.org>
Subject: [PATCH] drm/amdgpu: Fix oops when pp_funcs->switch_power_profile is unset
Date: Thu, 15 Nov 2018 21:56:51 +0000	[thread overview]
Message-ID: <1542318992-12464-1-git-send-email-Felix.Kuehling@amd.com> (raw)

On Vega20 and other pre-production GPUs, powerplay is not enabled yet.
Check for NULL pointers before calling pp_funcs function pointers.

Also affects Kaveri.

CC: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
index a9c7597..1c1fed6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
@@ -503,8 +503,11 @@ void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 
-	amdgpu_dpm_switch_power_profile(adev,
-					PP_SMC_POWER_PROFILE_COMPUTE, !idle);
+	if (adev->powerplay.pp_funcs &&
+	    adev->powerplay.pp_funcs->switch_power_profile)
+		amdgpu_dpm_switch_power_profile(adev,
+						PP_SMC_POWER_PROFILE_COMPUTE,
+						!idle);
 }
 
 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid)
-- 
2.7.4

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             reply	other threads:[~2018-11-15 21:56 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-15 21:56 Kuehling, Felix [this message]
     [not found] ` <1542318992-12464-1-git-send-email-Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
2018-11-15 21:59   ` [PATCH] drm/amdgpu: Fix oops when pp_funcs->switch_power_profile is unset Deucher, Alexander
     [not found]     ` <BN6PR12MB180900E62C3F2EB8C61C1FAFF7DC0-/b2+HYfkarSEx6ez0IUAagdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-11-19 20:02       ` Kuehling, Felix
     [not found]         ` <f1108e8c-d330-bff3-b04b-4e79aaeabb9a-5C7GfCeVMHo@public.gmane.org>
2018-11-19 20:26           ` Deucher, Alexander
2018-11-16 17:06   ` Joerg Roedel
2018-11-19  8:48   ` Christian König

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