HID: multitouch: warn on sysfs group creation failure

This adds a warning message stating that the sysfs group was not able to be
created for the passed hid_device structure pointer with dev_warn.

Signed-off-by: Nicholas Krause <xerofoify@gmail.com>
Reviewed-by: Benjamin Tissoires <benajmin.tissoires@redhat.com>
[jkosina@suse.cz: massaged changelog a bit]
[jkosina@suse.cz: reformatted source]
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 296d499..6adb788 100644 (file)
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1133,6 +1133,9 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
                return ret;
 
        ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
+       if (ret)
+               dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
+                               hdev->name);
 
        mt_set_maxcontacts(hdev);
        mt_set_input_mode(hdev);