Commit 98c6e6a7 authored by Andrey Grodzovsky's avatar Andrey Grodzovsky
Browse files

drm/amdgpu: Verify DMA opearations from device are done 



In case device remove is just simualted by sysfs then verify
device doesn't keep doing DMA to the released memory after
pci_remove is done.

Signed-off-by: default avatarAndrey Grodzovsky <andrey.grodzovsky@amd.com>
Acked-by: default avatarChristian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210512142648.666476-16-andrey.grodzovsky@amd.com
parent 984f8261

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

+6 −0
Original line number Diff line number Diff line
@@ -1314,7 +1314,13 @@ amdgpu_pci_remove(struct pci_dev *pdev) 
	drm_dev_unplug(dev);

	amdgpu_driver_unload_kms(dev);



	/*

	 * Flush any in flight DMA operations from device.

	 * Clear the Bus Master Enable bit and then wait on the PCIe Device

	 * StatusTransactions Pending bit.

	 */

	pci_disable_device(pdev);

	pci_wait_for_pending_transaction(pdev);

}



static void