USB: xHCI: Add pointer to udev in struct xhci_virt_device

Add a pointer to udev in struct xhci_virt_device. When allocate a new
virt_device, make the pointer point to the corresponding udev.

Modify xhci_check_args(), check if virt_dev->udev matches the target udev,
to make sure command is issued to the right device.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 4e51343ddff..be901808e47 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -778,6 +778,7 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
 
         init_completion(&dev->cmd_completion);
         INIT_LIST_HEAD(&dev->cmd_list);
+        dev->udev = udev;
 
         /* Point to output device context in dcbaa. */
         xhci->dcbaa->dev_context_ptrs[slot_id] = dev->out_ctx->dma;