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>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 296d4991560e..6adb788bbfca 100644
--- 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);