[PATCH] drm/amdgpu: Disable irq on device before destroying it

[mikita.lipski at amd.com]

From: Mikita Lipski <mikita.lipski at amd.com>

Disable irq on devices before destroying them. That prevents
use-after-free memory access when unloading the driver.

Signed-off-by: Mikita Lipski <mikita.lipski at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index b4911911..593396f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1456,6 +1456,9 @@ static int amdgpu_device_ip_fini(struct amdgpu_device *adev)
 		}
 	}
 
+	/* disable all interrupts */
+	amdgpu_irq_disable_all(adev);
+
 	for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
 		if (!adev->ip_blocks[i].status.hw)
 			continue;
@@ -1482,8 +1485,6 @@ static int amdgpu_device_ip_fini(struct amdgpu_device *adev)
 		adev->ip_blocks[i].status.hw = false;
 	}
 
-	/* disable all interrupts */
-	amdgpu_irq_disable_all(adev);
 
 	for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
 		if (!adev->ip_blocks[i].status.sw)
-- 
2.7.4