xHCI: release spinlock when setup interrupt

Jiri Slaby reports spinlock is held while calling kmalloc(GFP_KERNEL)
and request_irq() in xhci_resume().

Release the spinlock when setup interrupt.

Reported-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 5d7d4e951ea4..7c8d70fbe113 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -714,6 +714,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
                 return retval;
         }
 
+        spin_unlock_irq(&xhci->lock);
         /* Re-setup MSI-X */
         if (hcd->irq)
                 free_irq(hcd->irq, hcd);
@@ -736,6 +737,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
                 hcd->irq = pdev->irq;
         }
 
+        spin_lock_irq(&xhci->lock);
         /* step 4: set Run/Stop bit */
         command = xhci_readl(xhci, &xhci->op_regs->command);
         command |= CMD_RUN;