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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "Leslie Shi" <Yuliang.Shi@amd.com>,
	"Hawking Zhang" <Hawking.Zhang@amd.com>,
	"Guchun Chen" <guchun.chen@amd.com>,
	"Christian König" <christian.koenig@amd.com>,
	"Alex Deucher" <alexander.deucher@amd.com>,
	"Sasha Levin" <sashal@kernel.org>,
	Xinhui.Pan@amd.com, airlied@linux.ie, daniel@ffwll.ch,
	tao.zhou1@amd.com, ray.huang@amd.com, PengJu.Zhou@amd.com,
	Likun.Gao@amd.com, John.Clements@amd.com, Felix.Kuehling@amd.com,
	Oak.Zeng@amd.com, lee.jones@linaro.org,
	amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: [PATCH AUTOSEL 5.14 32/40] drm/amdgpu: fix gart.bo pin_count leak
Date: Tue,  5 Oct 2021 09:50:11 -0400	[thread overview]
Message-ID: <20211005135020.214291-32-sashal@kernel.org> (raw)
In-Reply-To: <20211005135020.214291-1-sashal@kernel.org>

From: Leslie Shi <Yuliang.Shi@amd.com>

[ Upstream commit 66805763a97f8f7bdf742fc0851d85c02ed9411f ]

gmc_v{9,10}_0_gart_disable() isn't called matched with
correspoding gart_enbale function in SRIOV case. This will
lead to gart.bo pin_count leak on driver unload.

Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Leslie Shi <Yuliang.Shi@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 3 ++-
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c  | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index 4523df2785d6..5b6317bf9751 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -1094,6 +1094,8 @@ static int gmc_v10_0_hw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	gmc_v10_0_gart_disable(adev);
+
 	if (amdgpu_sriov_vf(adev)) {
 		/* full access mode, so don't touch any GMC register */
 		DRM_DEBUG("For SRIOV client, shouldn't do anything.\n");
@@ -1102,7 +1104,6 @@ static int gmc_v10_0_hw_fini(void *handle)
 
 	amdgpu_irq_put(adev, &adev->gmc.ecc_irq, 0);
 	amdgpu_irq_put(adev, &adev->gmc.vm_fault, 0);
-	gmc_v10_0_gart_disable(adev);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 7eb70d69f760..f3cd2b3fb4cc 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -1764,6 +1764,8 @@ static int gmc_v9_0_hw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	gmc_v9_0_gart_disable(adev);
+
 	if (amdgpu_sriov_vf(adev)) {
 		/* full access mode, so don't touch any GMC register */
 		DRM_DEBUG("For SRIOV client, shouldn't do anything.\n");
@@ -1772,7 +1774,6 @@ static int gmc_v9_0_hw_fini(void *handle)
 
 	amdgpu_irq_put(adev, &adev->gmc.ecc_irq, 0);
 	amdgpu_irq_put(adev, &adev->gmc.vm_fault, 0);
-	gmc_v9_0_gart_disable(adev);
 
 	return 0;
 }
-- 
2.33.0


           reply	other threads:[~2021-10-05 13:51 UTC|newest]

Thread overview: expand[flat|nested]  mbox.gz  Atom feed
 [parent not found: <20211005135020.214291-1-sashal@kernel.org>]

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