| Message ID | 20230319092428.283054-9-u.kleine-koenig@pengutronix.de |
|---|---|
| State | New |
| Headers | show |
| Series | usb: phy: Convert to platform remove callback returning void | expand |
> -----Original Message----- > From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > Sent: Sunday, March 19, 2023 4:24 AM > To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>; Shawn Guo > <shawnguo@kernel.org>; Sascha Hauer <s.hauer@pengutronix.de>; Frank Li > <frank.li@nxp.com> > Cc: Fabio Estevam <festevam@gmail.com>; dl-linux-imx <linux- > imx@nxp.com>; linux-usb@vger.kernel.org; linux-arm- > kernel@lists.infradead.org; kernel@pengutronix.de > Subject: [EXT] [PATCH 08/11] usb: phy: mxs: Convert to platform remove > callback returning void > > Caution: EXT Email > > 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: Frank Li <Frank.li@nxp.com> > drivers/usb/phy/phy-mxs-usb.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs- > usb.c > index d2836ef5d15c..b21eecacc3b7 100644 > --- a/drivers/usb/phy/phy-mxs-usb.c > +++ b/drivers/usb/phy/phy-mxs-usb.c > @@ -801,13 +801,11 @@ static int mxs_phy_probe(struct platform_device > *pdev) > return usb_add_phy_dev(&mxs_phy->phy); > } > > -static int mxs_phy_remove(struct platform_device *pdev) > +static void mxs_phy_remove(struct platform_device *pdev) > { > struct mxs_phy *mxs_phy = platform_get_drvdata(pdev); > > usb_remove_phy(&mxs_phy->phy); > - > - return 0; > } > > #ifdef CONFIG_PM_SLEEP > @@ -853,7 +851,7 @@ static SIMPLE_DEV_PM_OPS(mxs_phy_pm, > mxs_phy_system_suspend, > > static struct platform_driver mxs_phy_driver = { > .probe = mxs_phy_probe, > - .remove = mxs_phy_remove, > + .remove_new = mxs_phy_remove, > .driver = { > .name = DRIVER_NAME, > .of_match_table = mxs_phy_dt_ids, > -- > 2.39.2
diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index d2836ef5d15c..b21eecacc3b7 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -801,13 +801,11 @@ static int mxs_phy_probe(struct platform_device *pdev) return usb_add_phy_dev(&mxs_phy->phy); } -static int mxs_phy_remove(struct platform_device *pdev) +static void mxs_phy_remove(struct platform_device *pdev) { struct mxs_phy *mxs_phy = platform_get_drvdata(pdev); usb_remove_phy(&mxs_phy->phy); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -853,7 +851,7 @@ static SIMPLE_DEV_PM_OPS(mxs_phy_pm, mxs_phy_system_suspend, static struct platform_driver mxs_phy_driver = { .probe = mxs_phy_probe, - .remove = mxs_phy_remove, + .remove_new = mxs_phy_remove, .driver = { .name = DRIVER_NAME, .of_match_table = mxs_phy_dt_ids,
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/usb/phy/phy-mxs-usb.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)