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HID: roccat: check cdev_add return value 

Return value of cdev_add in hid_roccat.c init was not checked.

Signed-off-by: Michael Rissi <michael.rissi@dectris.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Michael Rissi 2013-06-14 17:16:37 +02:00 committed by Jiri Kosina
parent a4a23f6d68
commit a0be10c2e0
1 changed files with 13 additions and 3 deletions
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16
drivers/hid/hid-roccat.c
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@ -366,7 +366,7 @@ void roccat_disconnect(int minor)
mutex_lock(&devices_lock);
devices[minor] = NULL;
mutex_unlock(&devices_lock);
if (device->open) {
hid_hw_close(device->hid);
wake_up_interruptible(&device->wait);
@ -426,13 +426,23 @@ static int __init roccat_init(void)
if (retval < 0) {
pr_warn("can't get major number\n");
return retval;
goto error;
}
cdev_init(&roccat_cdev, &roccat_ops);
cdev_add(&roccat_cdev, dev_id, ROCCAT_MAX_DEVICES);
retval = cdev_add(&roccat_cdev, dev_id, ROCCAT_MAX_DEVICES);
if (retval < 0) {
pr_warn("cannot add cdev\n");
goto cleanup_alloc_chrdev_region;
}
return 0;
cleanup_alloc_chrdev_region:
unregister_chrdev_region(dev_id, ROCCAT_MAX_DEVICES);
error:
return retval;
}
static void __exit roccat_exit(void)