linux-kernel - Re: [PATCHv2][input-led] Defer input led work to workqueue

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Message-ID: <1409059327.22232.0.camel@jlt4.sipsolutions.net>
Date:	Tue, 26 Aug 2014 15:22:07 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Samuel Thibault <samuel.thibault@...-lyon.org>
Cc:	Hugh Dickins <hughd@...gle.com>, akpm@...ux-foundation.org,
	Sabrina Dubroca <sd@...asysnail.net>, Valdis.Kletnieks@...edu,
	Vincent Donnefort <vdonnefort@...il.com>,
	Bryan Wu <cooloney@...il.com>, linux-leds@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org
Subject: Re: [PATCHv2][input-led] Defer input led work to workqueue

On Tue, 2014-08-26 at 11:17 +0200, Samuel Thibault wrote:

> -	led_trigger_event(&vt_led_triggers[led], !!brightness);
> +	vt_led_state[led] = !!brightness;
> +	schedule_work(&vt_led_work[led]);


> +static int __init input_led_init(void)
> +{
> +	unsigned i;
> +
> +	for (i = 0; i < LED_CNT; i++)
> +		INIT_WORK(&vt_led_work[i], vt_led_cb);
> +
> +	return 0;
> +}
> +
> +static void __exit input_led_exit(void)
> +{
> +}

Come to think of it - don't you need to cancel_work_sync() in exit so
the work struct can't be queued while the module is being unloaded?

johannes

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