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authorMichael Rissi <michael.rissi@gmail.com>2013-06-14 17:16:37 +0200
committerJiri Kosina <jkosina@suse.cz>2013-06-18 11:00:36 +0200
commita0be10c2e0c822c0fdd6b207696012060147f84b (patch)
tree9d374c7706ef5b94cc65894e7cea9b280d3592c7
parenta4a23f6d68ad2c86ee8df6a6f89c9d315c0a761c (diff)
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>
-rw-r--r--drivers/hid/hid-roccat.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/hid/hid-roccat.c b/drivers/hid/hid-roccat.c
index b59b3df9ca95..65c4ccfcbd29 100644
--- a/drivers/hid/hid-roccat.c
+++ b/drivers/hid/hid-roccat.c
@@ -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)