linux-stable/include/linux/mfd/syscon.h
Arnd Bergmann adae28c59a mfd: syscon: Include errno.h from header
The syscon header uses the ENOTSUPP error constant, but doesn't
include the header that defines it. This causes a build error
after the imx pinctrl driver started using syscon:

include/linux/mfd/syscon.h: In function 'syscon_node_to_regmap':
include/linux/mfd/syscon.h:32:18: error: 'ENOTSUPP' undeclared (first use in this function)
  return ERR_PTR(-ENOTSUPP);
                  ^~~~~~~~

This adds the missing #include.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 8626ada871 ("pinctrl: imx: attach iomuxc device to gpr syscon")
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-04-11 13:31:40 +01:00

54 lines
1.4 KiB
C

/*
* System Control Driver
*
* Copyright (C) 2012 Freescale Semiconductor, Inc.
* Copyright (C) 2012 Linaro Ltd.
*
* Author: Dong Aisheng <dong.aisheng@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __LINUX_MFD_SYSCON_H__
#define __LINUX_MFD_SYSCON_H__
#include <linux/err.h>
#include <linux/errno.h>
struct device_node;
#ifdef CONFIG_MFD_SYSCON
extern struct regmap *syscon_node_to_regmap(struct device_node *np);
extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
extern struct regmap *syscon_regmap_lookup_by_pdevname(const char *s);
extern struct regmap *syscon_regmap_lookup_by_phandle(
struct device_node *np,
const char *property);
#else
static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
{
return ERR_PTR(-ENOTSUPP);
}
static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
{
return ERR_PTR(-ENOTSUPP);
}
static inline struct regmap *syscon_regmap_lookup_by_pdevname(const char *s)
{
return ERR_PTR(-ENOTSUPP);
}
static inline struct regmap *syscon_regmap_lookup_by_phandle(
struct device_node *np,
const char *property)
{
return ERR_PTR(-ENOTSUPP);
}
#endif
#endif /* __LINUX_MFD_SYSCON_H__ */