[S390] qdio: free indicator after reset is finished

The qdio device indicator is freed before the device is notified that
the indicator is reset. This sequence contains a race when the freed
indicator is used by a new device while the reset of the indicator is
still pending. Do the reset operation before freeing the indicator to
avoid that potential race.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index 752dbee06af582a4c2ac8481cb079658579bfcaa..5d9c66627b6eb7554b63bda327ce62ace37bc590 100644 (file)
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -292,8 +292,8 @@ void qdio_shutdown_thinint(struct qdio_irq *irq_ptr)
                return;
 
        /* reset adapter interrupt indicators */
-       put_indicator(irq_ptr->dsci);
        set_subchannel_ind(irq_ptr, 1);
+       put_indicator(irq_ptr->dsci);
 }
 
 void __exit tiqdio_unregister_thinints(void)