From: Markus Elfring <[email protected]> Date: Tue, 3 Feb 2015 16:47:48 +0100
The functions "dvb_unregister_device" and "kfree" could still be called by the dvb_ca_en50221_init() function in the case that a previous resource allocation failed. * Corresponding details could be improved by adjustments for jump targets. * Let us delete also an unnecessary check for the variable "ca" there. Signed-off-by: Markus Elfring <[email protected]> --- drivers/media/dvb-core/dvb_ca_en50221.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) diff --git a/drivers/media/dvb-core/dvb_ca_en50221.c b/drivers/media/dvb-core/dvb_ca_en50221.c index b999689..9842fd1 100644 --- a/drivers/media/dvb-core/dvb_ca_en50221.c +++ b/drivers/media/dvb-core/dvb_ca_en50221.c @@ -1676,14 +1676,14 @@ int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, /* initialise the system data */ if ((ca = kzalloc(sizeof(struct dvb_ca_private), GFP_KERNEL)) == NULL) { ret = -ENOMEM; - goto error; + goto exit; } ca->pub = pubca; ca->flags = flags; ca->slot_count = slot_count; if ((ca->slot_info = kcalloc(slot_count, sizeof(struct dvb_ca_slot), GFP_KERNEL)) == NULL) { ret = -ENOMEM; - goto error; + goto free_ca; } init_waitqueue_head(&ca->wait_queue); ca->open = 0; @@ -1694,7 +1694,7 @@ int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, /* register the DVB device */ ret = dvb_register_device(dvb_adapter, &ca->dvbdev, &dvbdev_ca, ca, DVB_DEVICE_CA); if (ret) - goto error; + goto free_slot_info; /* now initialise each slot */ for (i = 0; i < slot_count; i++) { @@ -1709,7 +1709,7 @@ int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, if (signal_pending(current)) { ret = -EINTR; - goto error; + goto unregister_device; } mb(); @@ -1720,16 +1720,17 @@ int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, ret = PTR_ERR(ca->thread); printk("dvb_ca_init: failed to start kernel_thread (%d)\n", ret); - goto error; + goto unregister_device; } return 0; -error: - if (ca != NULL) { - dvb_unregister_device(ca->dvbdev); - kfree(ca->slot_info); - kfree(ca); - } +unregister_device: + dvb_unregister_device(ca->dvbdev); +free_slot_info: + kfree(ca->slot_info); +free_ca: + kfree(ca); +exit: pubca->private = NULL; return ret; } -- 2.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
