Re: [PATCH] leds: Add Chrome OS keyboard backlight LEDs driver

From: Jacek Anaszewski
Date: Fri Mar 04 2016 - 16:49:15 EST


On 03/04/2016 09:59 PM, Dmitry Torokhov wrote:
On Fri, Mar 04, 2016 at 09:55:24PM +0100, Jacek Anaszewski wrote:
On 03/04/2016 08:13 PM, Dmitry Torokhov wrote:
On Fri, Mar 04, 2016 at 10:38:40AM +0100, Jacek Anaszewski wrote:
Hi Evan,

On 03/04/2016 09:38 AM, Evan McClain wrote:
On Thu, 2016-03-03 at 15:46 -0800, Dmitry Torokhov wrote:
From: Simon Que <sque@xxxxxxxxxxxx>

This is a driver for ACPI-based keyboard backlight LEDs found on
Chromebooks. The driver locates \\_SB.KBLT ACPI device and exports
backlight as "chromeos::kbd_backlight" LED class device in sysfs.

Was it ever decided where this driver should live? I was planning on
submitting to platform/chrome since most keyboard backlights seem to
live over there but I don't think I got a response.


It hasn't been decided yet. I can take it, but could you submit one more
version, without

'owner = THIS_MODULE' in struct platform_driver keyboard_led_driver ?

It is redundant, because the core will do it.

Also the line with devm_kzalloc has over 80 characters.

Also:

- preferably use sizeof(*cdev) instead of sizeof(struct ...)
- do not check cdev->flags & LED_SUSPENDED in
keyboard_led_set_brightness() as it is not going to be called when led
device is suspended anyway
- change the MODULE_LICENSE from "GPL v2" to "GPL" as to match the

I can see "either version 2 of the License" in the license notice.

From module.h:

* "GPL" [GNU Public License v2 or later]
* "GPL v2" [GNU Public License v2]

leds-chromeos-keyboard is GPL v2+ so module license should be "GPL".


That's surprising. Thanks for spotting this.

--
Best Regards,
Jacek Anaszewski