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From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Biju Das <biju.das.jz@bp.renesas.com>
Cc: Support Opensource <support.opensource@diasemi.com>,
	linux-input@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>,
	Biju Das <biju.das.au@gmail.com>,
	linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH v2 4/4] Input: da9063 - Add polling support
Date: Mon, 18 Dec 2023 17:52:50 -0800	[thread overview]
Message-ID: <ZYD3cvHBHMZoACnQ@google.com> (raw)
In-Reply-To: <20231213214803.9931-5-biju.das.jz@bp.renesas.com>

On Wed, Dec 13, 2023 at 09:48:03PM +0000, Biju Das wrote:
> +static void da9063_onkey_polled_poll(struct input_dev *input)
> +{
> +	struct da9063_onkey *onkey = input_get_drvdata(input);
> +	const struct da906x_chip_config *config = onkey->config;
> +	unsigned int val;
> +	int error;
> +
> +	error = regmap_read(onkey->regmap, config->onkey_status, &val);
> +	if (onkey->key_power && !error && (val & config->onkey_nonkey_mask)) {
> +		input_report_key(onkey->input, KEY_POWER, 1);
> +		input_sync(onkey->input);
> +		schedule_delayed_work(&onkey->work, 0);

In the polling case you should not be scheduling any additional works as
the driver may get confused if you repeatedly open and close input
device.

Also I think in threaded case it might be cleaner to avoid scheduling
work and simply loop in the interrupt thread (since it can sleep).

Thanks.

-- 
Dmitry

  reply	other threads:[~2023-12-19  1:52 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-13 21:47 [PATCH v2 0/4] Add polling support for DA9063 onkey driver Biju Das
2023-12-13 21:48 ` [PATCH v2 1/4] Input: da9063 - Simplify obtaining OF match data Biju Das
2023-12-19  1:48   ` Dmitry Torokhov
2023-12-13 21:48 ` [PATCH v2 2/4] Input: da9063 - Drop redundant prints in probe() Biju Das
2023-12-19  1:50   ` Dmitry Torokhov
2023-12-13 21:48 ` [PATCH v2 3/4] Input: da9063 - Use dev_err_probe() Biju Das
2023-12-19  1:50   ` Dmitry Torokhov
2023-12-13 21:48 ` [PATCH v2 4/4] Input: da9063 - Add polling support Biju Das
2023-12-19  1:52   ` Dmitry Torokhov [this message]
2024-01-25 11:52     ` Biju Das

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