Complete() will be run with interrupt enabled, so change to
spin_lock_irqsave().

Cc: Mauro Carvalho Chehab <redacted>
Cc: linux-media@vger.kernel.org
Signed-off-by: Ming Lei <redacted>
---
 drivers/media/usb/em28xx/em28xx-core.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/media/usb/em28xx/em28xx-core.c b/drivers/media/usb/em28xx/em28xx-core.c
index fc157af..0d698f9 100644
--- a/drivers/media/usb/em28xx/em28xx-core.c
+++ b/drivers/media/usb/em28xx/em28xx-core.c

@@ -941,6 +941,7 @@ static void em28xx_irq_callback(struct urb *urb)
 {
        struct em28xx *dev = urb->context;
        int i;
+       unsigned long flags;

        switch (urb->status) {
        case 0:             /* success */

@@ -956,9 +957,9 @@ static void em28xx_irq_callback(struct urb *urb)
        }

        /* Copy data from URB */
-       spin_lock(&dev->slock);
+       spin_lock_irqsave(&dev->slock, flags);
        dev->usb_ctl.urb_data_copy(dev, urb);
-       spin_unlock(&dev->slock);
+       spin_unlock_irqrestore(&dev->slock, flags);

        /* Reset urb buffers */
        for (i = 0; i < urb->number_of_packets; i++) {
--

1.7.9.5

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