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HID: lenovo: Add checks to fix of_led_classdev_register

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[ Upstream commit 6ae16dfb61 ]

In lenovo_probe_tpkbd(), the function of_led_classdev_register() could
return an error value that is unchecked. The fix adds these checks.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Aditya Pakki 2018-12-24 15:39:14 -06:00 committed by Greg Kroah-Hartman
parent ec8f73c268
commit d921bb1625
1 changed files with 8 additions and 2 deletions
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10
drivers/hid/hid-lenovo.c
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@ -743,7 +743,9 @@ static int lenovo_probe_tpkbd(struct hid_device *hdev)
data_pointer->led_mute.brightness_get = lenovo_led_brightness_get_tpkbd;
data_pointer->led_mute.brightness_set = lenovo_led_brightness_set_tpkbd;
data_pointer->led_mute.dev = dev;
led_classdev_register(dev, &data_pointer->led_mute);
ret = led_classdev_register(dev, &data_pointer->led_mute);
if (ret < 0)
goto err;
data_pointer->led_micmute.name = name_micmute;
data_pointer->led_micmute.brightness_get =
@ -751,7 +753,11 @@ static int lenovo_probe_tpkbd(struct hid_device *hdev)
data_pointer->led_micmute.brightness_set =
lenovo_led_brightness_set_tpkbd;
data_pointer->led_micmute.dev = dev;
led_classdev_register(dev, &data_pointer->led_micmute);
ret = led_classdev_register(dev, &data_pointer->led_micmute);
if (ret < 0) {
led_classdev_unregister(&data_pointer->led_mute);
goto err;
}
lenovo_features_set_tpkbd(hdev);