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drm/amdgpu: Disable irq on device before destroying it

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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@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mikita Lipski 2018-03-15 09:37:08 -04:00 • committed by Alex Deucher
parent ff97cba8c1
commit 088e7c1617
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -1722,6 +1722,9 @@ static int amdgpu_device_ip_fini(struct amdgpu_device *adev)
int i, r;
amdgpu_amdkfd_device_fini(adev);
/* disable all interrupts */
amdgpu_irq_disable_all(adev);
/* need to disable SMC first */
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.hw)
@ -1773,8 +1776,6 @@ 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)