Re: [PATCH] leds: fix brightness changing when software blinking is active

From: Stas Sergeev
Date: Thu May 14 2015 - 05:45:27 EST


14.05.2015 11:44, Jacek Anaszewski ÐÐÑÐÑ:
>
>> if (led_cdev->blink_delay_on || led_cdev->blink_delay_off) {
>> led_cdev->delayed_set_value = brightness;
>> - schedule_work(&led_cdev->set_brightness_work);
>
> This line is still required. Please refer to the patch d23a22a74.
But I really want to get rid of this line and
vacate the work-queue, so that in the future the
per-driver work-queues can be replaced with this.

Why do you think it is still needed?
Are there any valid cases where you need to disable the
soft-blink from hard-irq context? IMHO the soft-blink is
only disabled as a result of user's actions, which is not
in a hard-irq context.
Could you please explain the use-case?

>> /* Stop blinking */
>> + led_stop_software_blink(led_cdev);
> This won't be needed.
Indeed, but with these changes there should be no requirement
for disabling a soft-blink from hard-irq context, which is what
I really wanted to have. What am I missing?
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