diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2023-11-03 18:14:29 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-22 12:02:53 +0000 |
| commit | b9a24821c7f7f8f8fbc9fc8539de96b60422d817 (patch) | |
| tree | 7d1cfbe30201bc718192f1d935496d61a1c9214d | |
| parent | f9cdf40ed66b7abc4fc03c5b47725583e5dc1072 (diff) | |
USB: usbip: vudc: Convert to platform remove callback returning void
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() will be 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>
Link: https://lore.kernel.org/r/20231103171428.3636570-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/usbip/vudc.h | 2 | ||||
| -rw-r--r-- | drivers/usb/usbip/vudc_dev.c | 3 | ||||
| -rw-r--r-- | drivers/usb/usbip/vudc_main.c | 2 |
3 files changed, 3 insertions, 4 deletions
diff --git a/drivers/usb/usbip/vudc.h b/drivers/usb/usbip/vudc.h index 1bd4bc005829..faf61c9c6a98 100644 --- a/drivers/usb/usbip/vudc.h +++ b/drivers/usb/usbip/vudc.h @@ -173,6 +173,6 @@ struct vudc_device *alloc_vudc_device(int devid); void put_vudc_device(struct vudc_device *udc_dev); int vudc_probe(struct platform_device *pdev); -int vudc_remove(struct platform_device *pdev); +void vudc_remove(struct platform_device *pdev); #endif /* __USBIP_VUDC_H */ diff --git a/drivers/usb/usbip/vudc_dev.c b/drivers/usb/usbip/vudc_dev.c index 44b04c54c086..f11535020e35 100644 --- a/drivers/usb/usbip/vudc_dev.c +++ b/drivers/usb/usbip/vudc_dev.c @@ -628,12 +628,11 @@ out: return ret; } -int vudc_remove(struct platform_device *pdev) +void vudc_remove(struct platform_device *pdev) { struct vudc *udc = platform_get_drvdata(pdev); usb_del_gadget_udc(&udc->gadget); cleanup_vudc_hw(udc); kfree(udc); - return 0; } diff --git a/drivers/usb/usbip/vudc_main.c b/drivers/usb/usbip/vudc_main.c index 993e721cb840..8bee553e4894 100644 --- a/drivers/usb/usbip/vudc_main.c +++ b/drivers/usb/usbip/vudc_main.c @@ -19,7 +19,7 @@ MODULE_PARM_DESC(num, "number of emulated controllers"); static struct platform_driver vudc_driver = { .probe = vudc_probe, - .remove = vudc_remove, + .remove_new = vudc_remove, .driver = { .name = GADGET_NAME, .dev_groups = vudc_groups, |