From 497667ab9016ba508bb0591b6e9d15597127b034 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Thu, 30 Mar 2023 23:10:22 +0200 Subject: [PATCH] spi: bcm2835: Convert to platform remove callback returning void MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is (mostly) ignored and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Convert this driver from always returning zero in the remove callback to the void returning variant. Now that bcm2835_spi_remove returns no error code any more, bcm2835_spi_shutdown() does the same thing as bcm2835_spi_remove(). So drop the shutdown function and use bcm2835_spi_remove() as .shutdown callback. Signed-off-by: Uwe Kleine-König Acked-by: Florian Fainelli Link: https://lore.kernel.org/r/20230330211022.2460233-1-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown --- drivers/spi/spi-bcm2835.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c index 6b7a3fa93fdf..3b253da98c05 100644 --- a/drivers/spi/spi-bcm2835.c +++ b/drivers/spi/spi-bcm2835.c @@ -1399,7 +1399,7 @@ out_clk_disable: return err; } -static int bcm2835_spi_remove(struct platform_device *pdev) +static void bcm2835_spi_remove(struct platform_device *pdev) { struct spi_controller *ctlr = platform_get_drvdata(pdev); struct bcm2835_spi *bs = spi_controller_get_devdata(ctlr); @@ -1415,17 +1415,6 @@ static int bcm2835_spi_remove(struct platform_device *pdev) BCM2835_SPI_CS_CLEAR_RX | BCM2835_SPI_CS_CLEAR_TX); clk_disable_unprepare(bs->clk); - - return 0; -} - -static void bcm2835_spi_shutdown(struct platform_device *pdev) -{ - int ret; - - ret = bcm2835_spi_remove(pdev); - if (ret) - dev_err(&pdev->dev, "failed to shutdown\n"); } static const struct of_device_id bcm2835_spi_match[] = { @@ -1440,8 +1429,8 @@ static struct platform_driver bcm2835_spi_driver = { .of_match_table = bcm2835_spi_match, }, .probe = bcm2835_spi_probe, - .remove = bcm2835_spi_remove, - .shutdown = bcm2835_spi_shutdown, + .remove_new = bcm2835_spi_remove, + .shutdown = bcm2835_spi_remove, }; module_platform_driver(bcm2835_spi_driver); -- 2.11.0