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media: dvbdev: fix error logic at dvb_register_device() 

As reported by smatch:

	drivers/media/dvb-core/dvbdev.c: drivers/media/dvb-core/dvbdev.c:510 dvb_register_device() warn: '&dvbdev->list_head' not removed from list
	drivers/media/dvb-core/dvbdev.c: drivers/media/dvb-core/dvbdev.c:530 dvb_register_device() warn: '&dvbdev->list_head' not removed from list
	drivers/media/dvb-core/dvbdev.c: drivers/media/dvb-core/dvbdev.c:545 dvb_register_device() warn: '&dvbdev->list_head' not removed from list

The error logic inside dvb_register_device() doesn't remove
devices from the dvb_adapter_list in case of errors.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2021-06-09 14:32:29 +02:00
parent abc0226df6
commit 1fec2ecc25
1 changed files with 3 additions and 0 deletions
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3
drivers/media/dvb-core/dvbdev.c
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@ -506,6 +506,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
break;
if (minor == MAX_DVB_MINORS) {
list_del (&dvbdev->list_head);
kfree(dvbdevfops);
kfree(dvbdev);
up_write(&minor_rwsem);
@ -526,6 +527,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
__func__);
dvb_media_device_free(dvbdev);
list_del (&dvbdev->list_head);
kfree(dvbdevfops);
kfree(dvbdev);
mutex_unlock(&dvbdev_register_lock);
@ -541,6 +543,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
pr_err("%s: failed to create device dvb%d.%s%d (%ld)\n",
__func__, adap->num, dnames[type], id, PTR_ERR(clsdev));
dvb_media_device_free(dvbdev);
list_del (&dvbdev->list_head);
kfree(dvbdevfops);
kfree(dvbdev);
return PTR_ERR(clsdev);