usb: wusbcore: convert nested lock to use spin_lock instead of spin_lock_irq

Nesting a spin_lock_irq/unlock_irq inside a lock that has already
disabled interrupts will enable interrupts before we are ready when
spin_unlock_irq is called.  This patch converts the inner lock to use
spin_lock and spin_unlock instead.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c
index c8e2a47..3e2e4ed 100644 (file)
--- a/drivers/usb/wusbcore/wa-xfer.c
+++ b/drivers/usb/wusbcore/wa-xfer.c
@@ -2390,10 +2390,10 @@ error_complete:
                done) {
 
                dev_info(dev, "Control EP stall.  Queue delayed work.\n");
-               spin_lock_irq(&wa->xfer_list_lock);
+               spin_lock(&wa->xfer_list_lock);
                /* move xfer from xfer_list to xfer_errored_list. */
                list_move_tail(&xfer->list_node, &wa->xfer_errored_list);
-               spin_unlock_irq(&wa->xfer_list_lock);
+               spin_unlock(&wa->xfer_list_lock);
                spin_unlock_irqrestore(&xfer->lock, flags);
                queue_work(wusbd, &wa->xfer_error_work);
        } else {