| Message ID | 20230303172041.2103336-37-u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | spi: Convert to platform remove callback returning void | expand |
On Fri, Mar 03, 2023 at 06:19:50PM +0100, Uwe Kleine-König wrote: > 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. > > Trivially convert this driver from always returning zero in the remove > callback to the void returning variant. > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Thanks, Conor. > --- > drivers/spi/spi-microchip-core-qspi.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/spi/spi-microchip-core-qspi.c b/drivers/spi/spi-microchip-core-qspi.c > index 19a6a46829f6..4f76ddf97b10 100644 > --- a/drivers/spi/spi-microchip-core-qspi.c > +++ b/drivers/spi/spi-microchip-core-qspi.c > @@ -566,7 +566,7 @@ static int mchp_coreqspi_probe(struct platform_device *pdev) > return ret; > } > > -static int mchp_coreqspi_remove(struct platform_device *pdev) > +static void mchp_coreqspi_remove(struct platform_device *pdev) > { > struct mchp_coreqspi *qspi = platform_get_drvdata(pdev); > u32 control = readl_relaxed(qspi->regs + REG_CONTROL); > @@ -575,8 +575,6 @@ static int mchp_coreqspi_remove(struct platform_device *pdev) > control &= ~CONTROL_ENABLE; > writel_relaxed(control, qspi->regs + REG_CONTROL); > clk_disable_unprepare(qspi->clk); > - > - return 0; > } > > static const struct of_device_id mchp_coreqspi_of_match[] = { > @@ -591,7 +589,7 @@ static struct platform_driver mchp_coreqspi_driver = { > .name = "microchip,coreqspi", > .of_match_table = mchp_coreqspi_of_match, > }, > - .remove = mchp_coreqspi_remove, > + .remove_new = mchp_coreqspi_remove, > }; > module_platform_driver(mchp_coreqspi_driver); > > -- > 2.39.1 >
diff --git a/drivers/spi/spi-microchip-core-qspi.c b/drivers/spi/spi-microchip-core-qspi.c index 19a6a46829f6..4f76ddf97b10 100644 --- a/drivers/spi/spi-microchip-core-qspi.c +++ b/drivers/spi/spi-microchip-core-qspi.c @@ -566,7 +566,7 @@ static int mchp_coreqspi_probe(struct platform_device *pdev) return ret; } -static int mchp_coreqspi_remove(struct platform_device *pdev) +static void mchp_coreqspi_remove(struct platform_device *pdev) { struct mchp_coreqspi *qspi = platform_get_drvdata(pdev); u32 control = readl_relaxed(qspi->regs + REG_CONTROL); @@ -575,8 +575,6 @@ static int mchp_coreqspi_remove(struct platform_device *pdev) control &= ~CONTROL_ENABLE; writel_relaxed(control, qspi->regs + REG_CONTROL); clk_disable_unprepare(qspi->clk); - - return 0; } static const struct of_device_id mchp_coreqspi_of_match[] = { @@ -591,7 +589,7 @@ static struct platform_driver mchp_coreqspi_driver = { .name = "microchip,coreqspi", .of_match_table = mchp_coreqspi_of_match, }, - .remove = mchp_coreqspi_remove, + .remove_new = mchp_coreqspi_remove, }; module_platform_driver(mchp_coreqspi_driver);
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. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- drivers/spi/spi-microchip-core-qspi.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)