Complete() will be run with interrupt enabled, so change to spin_lock_irqsave(). Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxxxxx> --- drivers/usb/misc/iowarrior.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index d36f34e..010ed6d 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -162,6 +162,7 @@ static void iowarrior_callback(struct urb *urb) int offset; int status = urb->status; int retval; + unsigned long flags; switch (status) { case 0: @@ -175,7 +176,7 @@ static void iowarrior_callback(struct urb *urb) goto exit; } - spin_lock(&dev->intr_idx_lock); + spin_lock_irqsave(&dev->intr_idx_lock, flags); intr_idx = atomic_read(&dev->intr_idx); /* aux_idx become previous intr_idx */ aux_idx = (intr_idx == 0) ? (MAX_INTERRUPT_BUFFER - 1) : (intr_idx - 1); @@ -211,7 +212,7 @@ static void iowarrior_callback(struct urb *urb) *(dev->read_queue + offset + (dev->report_size)) = dev->serial_number++; atomic_set(&dev->intr_idx, aux_idx); - spin_unlock(&dev->intr_idx_lock); + spin_unlock_irqrestore(&dev->intr_idx_lock, flags); /* tell the blocking read about the new data */ wake_up_interruptible(&dev->read_wait); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html