diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2021-04-04 10:04:24 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 10:50:04 +0200 |
| commit | e53e1fee4e8c4d71ec00a3241b78a8ce936d2063 (patch) | |
| tree | 53b9c97bc61826ab6637b1d0a9d178e5462cb573 | |
| parent | a3a5f9c29384f3db076cd36b4fef2297a8284731 (diff) | |
HID: lenovo: Use brightness_set_blocking callback for setting LEDs brightness
[ Upstream commit bbf62645255f120bc2e7488c237e3f04da42ec70 ]
The lenovo_led_brightness_set function may sleep, so we should have the
the led_class_dev's brightness_set_blocking callback point to it, rather
then the regular brightness_set callback.
When toggled through sysfs this is not a problem, but the brightness_set
callback may be called from atomic context when using LED-triggers.
Fixes: bc04b37ea0ec ("HID: lenovo: Add ThinkPad 10 Ultrabook Keyboard support")
Reviewed-by: Marek Behún <kabel@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/hid/hid-lenovo.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c index c6c8e20f3e8d..4dc5e5f932ed 100644 --- a/drivers/hid/hid-lenovo.c +++ b/drivers/hid/hid-lenovo.c @@ -777,7 +777,7 @@ static enum led_brightness lenovo_led_brightness_get( : LED_OFF; } -static void lenovo_led_brightness_set(struct led_classdev *led_cdev, +static int lenovo_led_brightness_set(struct led_classdev *led_cdev, enum led_brightness value) { struct device *dev = led_cdev->dev->parent; @@ -802,6 +802,8 @@ static void lenovo_led_brightness_set(struct led_classdev *led_cdev, lenovo_led_set_tp10ubkbd(hdev, tp10ubkbd_led[led_nr], value); break; } + + return 0; } static int lenovo_register_leds(struct hid_device *hdev) @@ -822,7 +824,7 @@ static int lenovo_register_leds(struct hid_device *hdev) data->led_mute.name = name_mute; data->led_mute.brightness_get = lenovo_led_brightness_get; - data->led_mute.brightness_set = lenovo_led_brightness_set; + data->led_mute.brightness_set_blocking = lenovo_led_brightness_set; data->led_mute.dev = &hdev->dev; ret = led_classdev_register(&hdev->dev, &data->led_mute); if (ret < 0) @@ -830,7 +832,7 @@ static int lenovo_register_leds(struct hid_device *hdev) data->led_micmute.name = name_micm; data->led_micmute.brightness_get = lenovo_led_brightness_get; - data->led_micmute.brightness_set = lenovo_led_brightness_set; + data->led_micmute.brightness_set_blocking = lenovo_led_brightness_set; data->led_micmute.dev = &hdev->dev; ret = led_classdev_register(&hdev->dev, &data->led_micmute); if (ret < 0) { |