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power: reset: at91-reset: Stop using module_platform_driver_probe()

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On today's platforms the benefit of platform_driver_probe() isn't that
relevant any more. It allows to drop some code after booting (or module
loading) for .probe() and discard the .remove() function completely if
the driver is built-in. This typically saves a few 100k.

The downside of platform_driver_probe() is that the driver cannot be
bound and unbound at runtime which is ancient and so slightly
complicates testing. There are also thoughts to deprecate
platform_driver_probe() because it adds some complexity in the driver
core for little gain. Also many drivers don't use it correctly. This
driver for example misses to mark the driver struct with __ref which is
needed to suppress a (W=1) modpost warning.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Link: https://lore.kernel.org/r/20231104211501.3676352-18-u.kleine-koenig@pengutronix.de
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Uwe Kleine-König 2023-11-04 22:15:04 +01:00 committed by Sebastian Reichel
parent 099806de68
commit 12389c657b
1 changed files with 5 additions and 4 deletions
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9
drivers/power/reset/at91-reset.c
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@ -337,7 +337,7 @@ static int at91_rcdev_init(struct at91_reset *reset,
return devm_reset_controller_register(&pdev->dev, &reset->rcdev);
}
static int __init at91_reset_probe(struct platform_device *pdev)
static int at91_reset_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
struct at91_reset *reset;
@ -417,7 +417,7 @@ disable_clk:
return ret;
}
static int __exit at91_reset_remove(struct platform_device *pdev)
static int at91_reset_remove(struct platform_device *pdev)
{
struct at91_reset *reset = platform_get_drvdata(pdev);
@ -428,13 +428,14 @@ static int __exit at91_reset_remove(struct platform_device *pdev)
}
static struct platform_driver at91_reset_driver = {
.remove = __exit_p(at91_reset_remove),
.probe = at91_reset_probe,
.remove = at91_reset_remove,
.driver = {
.name = "at91-reset",
.of_match_table = at91_reset_of_match,
},
};
module_platform_driver_probe(at91_reset_driver, at91_reset_probe);
module_platform_driver(at91_reset_driver);
MODULE_AUTHOR("Atmel Corporation");
MODULE_DESCRIPTION("Reset driver for Atmel SoCs");