serial: sprd: Fix missing spin_unlock in sprd_handle_irq()
authorAxel Lin <axel.lin@ingics.com>
Mon, 16 Feb 2015 14:39:04 +0000 (22:39 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 7 Mar 2015 02:39:55 +0000 (03:39 +0100)
Fix return from sprd_handle_irq() with spin_lock held.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/sprd_serial.c

index 594b63331ef40e42fa75a87cde1c139a46014398..bca975f5093b73fd5ebf3e0f4ec8c42e97dfea35 100644 (file)
@@ -293,8 +293,10 @@ static irqreturn_t sprd_handle_irq(int irq, void *dev_id)
 
        ims = serial_in(port, SPRD_IMSR);
 
-       if (!ims)
+       if (!ims) {
+               spin_unlock(&port->lock);
                return IRQ_NONE;
+       }
 
        serial_out(port, SPRD_ICLR, ~0);