[S390] cio: memory leak in cio processing

Allocated kernel memory for locks is not freed in case of subchannel found
to be invalid.

Signed-off-by: Michael Ernst <mernst@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index f16c15c..11f632f 100644 (file)
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -577,8 +577,11 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
        }
 
        /* Initialization for io subchannels. */
-       if (!css_sch_is_valid(&sch->schib))
-               return -ENODEV;
+       if (!css_sch_is_valid(&sch->schib)) {
+               err = -ENODEV;
+               goto out;
+       }
+
        /* Devno is valid. */
        if (is_blacklisted (sch->schid.ssid, sch->schib.pmcw.dev)) {
                /*