Commit ffe64881 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Greg Kroah-Hartman
Browse files

uio: uio_pdrv_genirq: Remove dummy PM handling 



Since commit 63d00be6 ("PM: runtime: Allow unassigned
->runtime_suspend|resume callbacks"), unassigned
.runtime_{suspend,resume}() callbacks are treated the same as dummy
callbacks that just return zero.

As the Runtime PM callbacks were the only driver-specific PM handling,
all PM handling can be removed.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/a5495b6068dd4e40ae7e0fb66b067fd5b5c210b2.1756999260.git.geert+renesas@glider.be


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6a84240f

drivers/uio/uio_pdrv_genirq.c

+0 −23
Original line number Diff line number Diff line
@@ -249,28 +249,6 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev) 
	return ret;

}



static int uio_pdrv_genirq_runtime_nop(struct device *dev)

{

	/* Runtime PM callback shared between ->runtime_suspend()

	 * and ->runtime_resume(). Simply returns success.

	 *

	 * In this driver pm_runtime_get_sync() and pm_runtime_put_sync()

	 * are used at open() and release() time. This allows the

	 * Runtime PM code to turn off power to the device while the

	 * device is unused, ie before open() and after release().

	 *

	 * This Runtime PM callback does not need to save or restore

	 * any registers since user space is responsbile for hardware

	 * register reinitialization after open().

	 */

	return 0;

}



static const struct dev_pm_ops uio_pdrv_genirq_dev_pm_ops = {

	.runtime_suspend = uio_pdrv_genirq_runtime_nop,

	.runtime_resume = uio_pdrv_genirq_runtime_nop,

};



#ifdef CONFIG_OF

static struct of_device_id uio_of_genirq_match[] = {

	{ /* This is filled with module_parm */ },
@@ -284,7 +262,6 @@ static struct platform_driver uio_pdrv_genirq = { 
	.probe = uio_pdrv_genirq_probe,

	.driver = {

		.name = DRIVER_NAME,

		.pm = &uio_pdrv_genirq_dev_pm_ops,

		.of_match_table = of_match_ptr(uio_of_genirq_match),

	},

};