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ARM: 9049/1: locomo: make locomo bus's remove callback return void

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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 locomo_driver::remove return
void, too. All users already unconditionally return 0, this commit makes
it obvious that returning an error code is a bad idea and ensures future
users behave accordingly.

Link: https://lore.kernel.org/r/20201126110140.2021758-1-u.kleine-koenig@pengutronix.de

Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Uwe Kleine-König
2021-01-14 17:40:06 +01:00
committed by Russell King
parent 074a6bda18
commit 33d6d2bb7e
5 changed files with 5 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
arch/arm/common/locomo.c
View File

@@ -838,11 +838,10 @@ static int locomo_bus_remove(struct device *dev)
{ {
struct locomo_dev *ldev = LOCOMO_DEV(dev); struct locomo_dev *ldev = LOCOMO_DEV(dev);
struct locomo_driver *drv = LOCOMO_DRV(dev->driver); struct locomo_driver *drv = LOCOMO_DRV(dev->driver);
int ret = 0;
if (drv->remove) if (drv->remove)
ret = drv->remove(ldev); drv->remove(ldev);
return ret; return 0;
} }
struct bus_type locomo_bus_type = { struct bus_type locomo_bus_type = {

2
arch/arm/include/asm/hardware/locomo.h
View File

@@ -188,7 +188,7 @@ struct locomo_driver {
struct device_driver drv; struct device_driver drv;
unsigned int devid; unsigned int devid;
int (*probe)(struct locomo_dev *); int (*probe)(struct locomo_dev *);
int (*remove)(struct locomo_dev *); void (*remove)(struct locomo_dev *);
}; };
#define LOCOMO_DRV(_d) container_of((_d), struct locomo_driver, drv) #define LOCOMO_DRV(_d) container_of((_d), struct locomo_driver, drv)

6
arch/arm/mach-sa1100/collie.c
View File

@@ -224,18 +224,12 @@ static int collie_uart_probe(struct locomo_dev *dev)
return 0; return 0;
} }
static int collie_uart_remove(struct locomo_dev *dev)
{
return 0;
}
static struct locomo_driver collie_uart_driver = { static struct locomo_driver collie_uart_driver = {
.drv = { .drv = {
.name = "collie_uart", .name = "collie_uart",
}, },
.devid = LOCOMO_DEVID_UART, .devid = LOCOMO_DEVID_UART,
.probe = collie_uart_probe, .probe = collie_uart_probe,
.remove = collie_uart_remove,
}; };
static int __init collie_uart_init(void) static int __init collie_uart_init(void)

4
drivers/input/keyboard/locomokbd.c
View File

@@ -304,7 +304,7 @@ static int locomokbd_probe(struct locomo_dev *dev)
return err; return err;
} }
static int locomokbd_remove(struct locomo_dev *dev) static void locomokbd_remove(struct locomo_dev *dev)
{ {
struct locomokbd *locomokbd = locomo_get_drvdata(dev); struct locomokbd *locomokbd = locomo_get_drvdata(dev);
@@ -318,8 +318,6 @@ static int locomokbd_remove(struct locomo_dev *dev)
release_mem_region((unsigned long) dev->mapbase, dev->length); release_mem_region((unsigned long) dev->mapbase, dev->length);
kfree(locomokbd); kfree(locomokbd);
return 0;
} }
static struct locomo_driver keyboard_driver = { static struct locomo_driver keyboard_driver = {

3
drivers/video/backlight/locomolcd.c
View File

@@ -208,7 +208,7 @@ static int locomolcd_probe(struct locomo_dev *ldev)
return 0; return 0;
} }
static int locomolcd_remove(struct locomo_dev *dev) static void locomolcd_remove(struct locomo_dev *dev)
{ {
unsigned long flags; unsigned long flags;
@@ -220,7 +220,6 @@ static int locomolcd_remove(struct locomo_dev *dev)
local_irq_save(flags); local_irq_save(flags);
locomolcd_dev = NULL; locomolcd_dev = NULL;
local_irq_restore(flags); local_irq_restore(flags);
return 0;
} }
static struct locomo_driver poodle_lcd_driver = { static struct locomo_driver poodle_lcd_driver = {