From bcfe934e2efb8d7075911233ae00f82f3e025533 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 30 May 2023 09:19:11 +0200 Subject: [PATCH] usb: xhci-plat: 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 ignored (apart from emitting a warning) 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. Eventually after all drivers are converted, .remove_new() is renamed to .remove(). To convert the xhci-plat driver, change the prototype of xhci_plat_remove() to return void. As this function is exported and used by the xhci-rcar driver, convert this driver at the same time accordingly. Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20230530071913.2192214-5-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-plat.c | 6 ++---- drivers/usb/host/xhci-plat.h | 2 +- drivers/usb/host/xhci-rcar.c | 6 +++--- 3 files changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index a666b21..a52d73c 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -395,7 +395,7 @@ static int xhci_generic_plat_probe(struct platform_device *pdev) return xhci_plat_probe(pdev, sysdev, priv_match); } -int xhci_plat_remove(struct platform_device *dev) +void xhci_plat_remove(struct platform_device *dev) { struct usb_hcd *hcd = platform_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); @@ -426,8 +426,6 @@ int xhci_plat_remove(struct platform_device *dev) pm_runtime_disable(&dev->dev); pm_runtime_put_noidle(&dev->dev); pm_runtime_set_suspended(&dev->dev); - - return 0; } EXPORT_SYMBOL_GPL(xhci_plat_remove); @@ -526,7 +524,7 @@ MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match); static struct platform_driver usb_generic_xhci_driver = { .probe = xhci_generic_plat_probe, - .remove = xhci_plat_remove, + .remove_new = xhci_plat_remove, .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "xhci-hcd", diff --git a/drivers/usb/host/xhci-plat.h b/drivers/usb/host/xhci-plat.h index 83b5b5a..2d15386 100644 --- a/drivers/usb/host/xhci-plat.h +++ b/drivers/usb/host/xhci-plat.h @@ -25,7 +25,7 @@ struct xhci_plat_priv { int xhci_plat_probe(struct platform_device *pdev, struct device *sysdev, const struct xhci_plat_priv *priv_match); -int xhci_plat_remove(struct platform_device *dev); +void xhci_plat_remove(struct platform_device *dev); extern const struct dev_pm_ops xhci_plat_pm_ops; #endif /* _XHCI_PLAT_H */ diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c index ad966b7..bf5261f 100644 --- a/drivers/usb/host/xhci-rcar.c +++ b/drivers/usb/host/xhci-rcar.c @@ -276,10 +276,10 @@ static int xhci_renesas_probe(struct platform_device *pdev) } static struct platform_driver usb_xhci_renesas_driver = { - .probe = xhci_renesas_probe, - .remove = xhci_plat_remove, + .probe = xhci_renesas_probe, + .remove_new = xhci_plat_remove, .shutdown = usb_hcd_platform_shutdown, - .driver = { + .driver = { .name = "xhci-renesas-hcd", .pm = &xhci_plat_pm_ops, .of_match_table = usb_xhci_of_match, -- 2.7.4