diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-08-21 17:10:22 +0200 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-08-27 05:17:50 -0400 |
| commit | 2b356b463933031374c373f70d9a3b14ec707161 (patch) | |
| tree | 1d7327368ea60655bc18d216c2990311803704bf /drivers | |
| parent | d3d7b53d1ae46534cd73e1073a5c29e3b61a0552 (diff) | |
| download | lwn-2b356b463933031374c373f70d9a3b14ec707161.tar.gz lwn-2b356b463933031374c373f70d9a3b14ec707161.zip | |
claw: fix memory leak in claw_probe.
probe_error() frees memory only, if cgdev->dev.driver_data refers
to the claw_privbk structure. Move forward its setting in claw_probe()
to ensure proper freeing of claw_privbk allocations.
Cc: Daniel <danielm77@spray.se>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/s390/net/claw.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c index a08b1682c8e8..cc5697deb1d3 100644 --- a/drivers/s390/net/claw.c +++ b/drivers/s390/net/claw.c @@ -271,6 +271,7 @@ claw_probe(struct ccwgroup_device *cgdev) if (!get_device(&cgdev->dev)) return -ENODEV; privptr = kzalloc(sizeof(struct claw_privbk), GFP_KERNEL); + cgdev->dev.driver_data = privptr; if (privptr == NULL) { probe_error(cgdev); put_device(&cgdev->dev); @@ -305,7 +306,6 @@ claw_probe(struct ccwgroup_device *cgdev) privptr->p_env->p_priv = privptr; cgdev->cdev[0]->handler = claw_irq_handler; cgdev->cdev[1]->handler = claw_irq_handler; - cgdev->dev.driver_data = privptr; CLAW_DBF_TEXT(2, setup, "prbext 0"); return 0; @@ -1960,19 +1960,16 @@ init_ccw_bk(struct net_device *dev) static void probe_error( struct ccwgroup_device *cgdev) { - struct claw_privbk *privptr; + struct claw_privbk *privptr; CLAW_DBF_TEXT(4, trace, "proberr"); - privptr=(struct claw_privbk *)cgdev->dev.driver_data; - if (privptr!=NULL) { + privptr = (struct claw_privbk *) cgdev->dev.driver_data; + if (privptr != NULL) { + cgdev->dev.driver_data = NULL; kfree(privptr->p_env); - privptr->p_env=NULL; - kfree(privptr->p_mtc_envelope); - privptr->p_mtc_envelope=NULL; - kfree(privptr); - privptr=NULL; - } - return; + kfree(privptr->p_mtc_envelope); + kfree(privptr); + } } /* probe_error */ /*-------------------------------------------------------------------* |