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Diffstat (limited to '')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 1db4fea8c170..732580c6cbea 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -802,9 +802,11 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) int i; /* Free the Event Ring Segment Table and the actual Event Ring */ - xhci_writel(xhci, 0, &xhci->ir_set->erst_size); - xhci_write_64(xhci, 0, &xhci->ir_set->erst_base); - xhci_write_64(xhci, 0, &xhci->ir_set->erst_dequeue); + if (xhci->ir_set) { + xhci_writel(xhci, 0, &xhci->ir_set->erst_size); + xhci_write_64(xhci, 0, &xhci->ir_set->erst_base); + xhci_write_64(xhci, 0, &xhci->ir_set->erst_dequeue); + } size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries); if (xhci->erst.entries) pci_free_consistent(pdev, size, |