On 5/17/23 17:02, 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 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(). > > 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> > --- Looks good to me. Acked-by: Shuah Khan <skhan@linuxfoundation.org> thanks, -- Shuah
diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c index 233265550fc6..37d1fc34e8a5 100644 --- a/drivers/usb/usbip/vhci_hcd.c +++ b/drivers/usb/usbip/vhci_hcd.c @@ -1393,7 +1393,7 @@ static int vhci_hcd_probe(struct platform_device *pdev) return ret; } -static int vhci_hcd_remove(struct platform_device *pdev) +static void vhci_hcd_remove(struct platform_device *pdev) { struct vhci *vhci = *((void **)dev_get_platdata(&pdev->dev)); @@ -1410,8 +1410,6 @@ static int vhci_hcd_remove(struct platform_device *pdev) vhci->vhci_hcd_hs = NULL; vhci->vhci_hcd_ss = NULL; - - return 0; } #ifdef CONFIG_PM @@ -1485,7 +1483,7 @@ static int vhci_hcd_resume(struct platform_device *pdev) static struct platform_driver vhci_driver = { .probe = vhci_hcd_probe, - .remove = vhci_hcd_remove, + .remove_new = vhci_hcd_remove, .suspend = vhci_hcd_suspend, .resume = vhci_hcd_resume, .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 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(). 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/usbip/vhci_hcd.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)