From 0d519e0d52ee7c532d4018b90cd0b042d374c06d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Fri, 5 Feb 2021 23:28:42 +0100 Subject: dax-device: Make remove callback return void MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The driver core ignores the return value of struct bus_type::remove() because there is only little that can be done. To simplify the quest to make this function return void, let struct dax_device_driver::remove() return void, too. All users already unconditionally return 0, this commit makes it obvious that returning an error code isn't intended. Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20210205222842.34896-6-uwe@kleine-koenig.org Signed-off-by: Dan Williams --- drivers/dax/bus.c | 5 ++--- drivers/dax/bus.h | 2 +- drivers/dax/kmem.c | 7 ++----- 3 files changed, 5 insertions(+), 9 deletions(-) (limited to 'drivers/dax') diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index d2419e88073a..452e85ae87a8 100644 --- a/drivers/dax/bus.c +++ b/drivers/dax/bus.c @@ -178,12 +178,11 @@ static int dax_bus_remove(struct device *dev) { struct dax_device_driver *dax_drv = to_dax_drv(dev->driver); struct dev_dax *dev_dax = to_dev_dax(dev); - int ret = 0; if (dax_drv->remove) - ret = dax_drv->remove(dev_dax); + dax_drv->remove(dev_dax); - return ret; + return 0; } static struct bus_type dax_bus_type = { diff --git a/drivers/dax/bus.h b/drivers/dax/bus.h index 72b92f95509f..1e946ad7780a 100644 --- a/drivers/dax/bus.h +++ b/drivers/dax/bus.h @@ -39,7 +39,7 @@ struct dax_device_driver { struct list_head ids; int match_always; int (*probe)(struct dev_dax *dev); - int (*remove)(struct dev_dax *dev); + void (*remove)(struct dev_dax *dev); }; int __dax_driver_register(struct dax_device_driver *dax_drv, diff --git a/drivers/dax/kmem.c b/drivers/dax/kmem.c index 403ec42472d1..ac231cc36359 100644 --- a/drivers/dax/kmem.c +++ b/drivers/dax/kmem.c @@ -136,7 +136,7 @@ err_res_name: } #ifdef CONFIG_MEMORY_HOTREMOVE -static int dev_dax_kmem_remove(struct dev_dax *dev_dax) +static void dev_dax_kmem_remove(struct dev_dax *dev_dax) { int i, success = 0; struct device *dev = &dev_dax->dev; @@ -176,11 +176,9 @@ static int dev_dax_kmem_remove(struct dev_dax *dev_dax) kfree(data); dev_set_drvdata(dev, NULL); } - - return 0; } #else -static int dev_dax_kmem_remove(struct dev_dax *dev_dax) +static void dev_dax_kmem_remove(struct dev_dax *dev_dax) { /* * Without hotremove purposely leak the request_mem_region() for the @@ -190,7 +188,6 @@ static int dev_dax_kmem_remove(struct dev_dax *dev_dax) * request_mem_region(). */ any_hotremove_failed = true; - return 0; } #endif /* CONFIG_MEMORY_HOTREMOVE */ -- cgit v1.2.3