From: Uwe Kleine-König Date: Tue, 13 Jul 2021 19:35:21 +0000 (+0200) Subject: s390/scm: Make struct scm_driver::remove return void X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=15f83bb0191261adece5a26bfdf93c6eccdbc0bb;p=linux.git s390/scm: Make struct scm_driver::remove return void The driver core ignores the return value of scmdev_remove() (because there is only little it can do when a device disappears). So make it impossible for future drivers to return an unused error code by changing the remove prototype to return void. The real motivation for this change is the quest to make struct bus_type::remove return void, too. Reviewed-by: Cornelia Huck Acked-by: Vineeth Vijayan Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20210713193522.1770306-5-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman --- diff --git a/arch/s390/include/asm/eadm.h b/arch/s390/include/asm/eadm.h index bb63b2afdf6fc..445fe4c8184a3 100644 --- a/arch/s390/include/asm/eadm.h +++ b/arch/s390/include/asm/eadm.h @@ -105,7 +105,7 @@ enum scm_event {SCM_CHANGE, SCM_AVAIL}; struct scm_driver { struct device_driver drv; int (*probe) (struct scm_device *scmdev); - int (*remove) (struct scm_device *scmdev); + void (*remove) (struct scm_device *scmdev); void (*notify) (struct scm_device *scmdev, enum scm_event event); void (*handler) (struct scm_device *scmdev, void *data, blk_status_t error); diff --git a/drivers/s390/block/scm_drv.c b/drivers/s390/block/scm_drv.c index 3134fd6e058e7..69a845eb8b1f5 100644 --- a/drivers/s390/block/scm_drv.c +++ b/drivers/s390/block/scm_drv.c @@ -60,15 +60,13 @@ out: return ret; } -static int scm_remove(struct scm_device *scmdev) +static void scm_remove(struct scm_device *scmdev) { struct scm_blk_dev *bdev = dev_get_drvdata(&scmdev->dev); scm_blk_dev_cleanup(bdev); dev_set_drvdata(&scmdev->dev, NULL); kfree(bdev); - - return 0; } static struct scm_driver scm_drv = { diff --git a/drivers/s390/cio/scm.c b/drivers/s390/cio/scm.c index 9f26d4310bb34..b31711307e5a8 100644 --- a/drivers/s390/cio/scm.c +++ b/drivers/s390/cio/scm.c @@ -33,7 +33,10 @@ static int scmdev_remove(struct device *dev) struct scm_device *scmdev = to_scm_dev(dev); struct scm_driver *scmdrv = to_scm_drv(dev->driver); - return scmdrv->remove ? scmdrv->remove(scmdev) : -ENODEV; + if (scmdrv->remove) + scmdrv->remove(scmdev); + + return 0; } static int scmdev_uevent(struct device *dev, struct kobj_uevent_env *env)