mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-14 16:23:51 +08:00
30e88d017f
The driver core ignores the return value of the remove callback, so don't give isa drivers the chance to provide a value. Adapt all isa_drivers with a remove callbacks accordingly; they all return 0 unconditionally anyhow. Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for drivers/net/can/sja1000/tscan1.c Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> Acked-by: Wolfram Sang <wsa@kernel.org> # for drivers/i2c/ Reviewed-by: Takashi Iway <tiwai@suse.de> # for sound/ Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for drivers/media/ Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> Link: https://lore.kernel.org/r/20210122092449.426097-4-uwe@kleine-koenig.org Signed-off-by: Takashi Iwai <tiwai@suse.de>
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* ISA bus.
|
|
*/
|
|
|
|
#ifndef __LINUX_ISA_H
|
|
#define __LINUX_ISA_H
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/kernel.h>
|
|
|
|
struct isa_driver {
|
|
int (*match)(struct device *, unsigned int);
|
|
int (*probe)(struct device *, unsigned int);
|
|
void (*remove)(struct device *, unsigned int);
|
|
void (*shutdown)(struct device *, unsigned int);
|
|
int (*suspend)(struct device *, unsigned int, pm_message_t);
|
|
int (*resume)(struct device *, unsigned int);
|
|
|
|
struct device_driver driver;
|
|
struct device *devices;
|
|
};
|
|
|
|
#define to_isa_driver(x) container_of((x), struct isa_driver, driver)
|
|
|
|
#ifdef CONFIG_ISA_BUS_API
|
|
int isa_register_driver(struct isa_driver *, unsigned int);
|
|
void isa_unregister_driver(struct isa_driver *);
|
|
#else
|
|
static inline int isa_register_driver(struct isa_driver *d, unsigned int i)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline void isa_unregister_driver(struct isa_driver *d)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* module_isa_driver() - Helper macro for registering a ISA driver
|
|
* @__isa_driver: isa_driver struct
|
|
* @__num_isa_dev: number of devices to register
|
|
*
|
|
* Helper macro for ISA drivers which do not do anything special in module
|
|
* init/exit. This eliminates a lot of boilerplate code. Each module may only
|
|
* use this macro once, and calling it replaces module_init and module_exit.
|
|
*/
|
|
#define module_isa_driver(__isa_driver, __num_isa_dev) \
|
|
static int __init __isa_driver##_init(void) \
|
|
{ \
|
|
return isa_register_driver(&(__isa_driver), __num_isa_dev); \
|
|
} \
|
|
module_init(__isa_driver##_init); \
|
|
static void __exit __isa_driver##_exit(void) \
|
|
{ \
|
|
isa_unregister_driver(&(__isa_driver)); \
|
|
} \
|
|
module_exit(__isa_driver##_exit);
|
|
|
|
/**
|
|
* max_num_isa_dev() - Maximum possible number registered of an ISA device
|
|
* @__ida_dev_ext: ISA device address extent
|
|
*
|
|
* The highest base address possible for an ISA device is 0x3FF; this results in
|
|
* 1024 possible base addresses. Dividing the number of possible base addresses
|
|
* by the address extent taken by each device results in the maximum number of
|
|
* devices on a system.
|
|
*/
|
|
#define max_num_isa_dev(__isa_dev_ext) (1024 / __isa_dev_ext)
|
|
|
|
#endif /* __LINUX_ISA_H */
|