[Xen-changelog] serial.c:

[BitKeeper Bot <riel@xxxxxxxxxxx>]

ChangeSet 1.1725, 2005/06/16 02:47:29+01:00, kaf24@xxxxxxxxxxxxxxxxxxxx

        serial.c:
          Fix serial_getc locking.



 serial.c |    4 ++++
 1 files changed, 4 insertions(+)


diff -Nru a/xen/drivers/char/serial.c b/xen/drivers/char/serial.c
--- a/xen/drivers/char/serial.c 2005-06-15 22:02:57 -04:00
+++ b/xen/drivers/char/serial.c 2005-06-15 22:02:57 -04:00
@@ -176,11 +176,15 @@
             if ( port->rxbufp != port->rxbufc )
             {
                 c = port->rxbuf[MASK_SERIAL_RXBUF_IDX(port->rxbufc++)];
+                spin_unlock_irqrestore(&port->lock, flags);
                 break;
             }
             
             if ( port->driver->getc(port, &c) )
+            {
+                spin_unlock_irqrestore(&port->lock, flags);
                 break;
+            }
 
             spin_unlock_irqrestore(&port->lock, flags);
 

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