42a6e09960
The new support for nvmem devices from the rtc layer caused a build
error in some configurations:
include/linux/nvmem-provider.h: In function 'nvmem_register':
include/linux/nvmem-provider.h:51:9: error: implicit declaration of function 'ERR_PTR' [-Werror=implicit-function-declaration]
This adds the missing include to ensure we can always include
the header.
Fixes: 697e5a47aa ("rtc: add generic nvmem support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
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* nvmem framework provider.
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*
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* Copyright (C) 2015 Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
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* Copyright (C) 2013 Maxime Ripard <maxime.ripard@free-electrons.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#ifndef _LINUX_NVMEM_PROVIDER_H
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#define _LINUX_NVMEM_PROVIDER_H
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#include <linux/err.h>
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#include <linux/errno.h>
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struct nvmem_device;
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struct nvmem_cell_info;
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typedef int (*nvmem_reg_read_t)(void *priv, unsigned int offset,
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void *val, size_t bytes);
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typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
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void *val, size_t bytes);
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struct nvmem_config {
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struct device *dev;
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const char *name;
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int id;
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struct module *owner;
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const struct nvmem_cell_info *cells;
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int ncells;
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bool read_only;
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bool root_only;
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nvmem_reg_read_t reg_read;
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nvmem_reg_write_t reg_write;
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int size;
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int word_size;
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int stride;
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void *priv;
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/* To be only used by old driver/misc/eeprom drivers */
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bool compat;
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struct device *base_dev;
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};
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#if IS_ENABLED(CONFIG_NVMEM)
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struct nvmem_device *nvmem_register(const struct nvmem_config *cfg);
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int nvmem_unregister(struct nvmem_device *nvmem);
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#else
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static inline struct nvmem_device *nvmem_register(const struct nvmem_config *c)
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{
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return ERR_PTR(-ENOSYS);
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}
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static inline int nvmem_unregister(struct nvmem_device *nvmem)
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{
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return -ENOSYS;
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}
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#endif /* CONFIG_NVMEM */
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#endif /* ifndef _LINUX_NVMEM_PROVIDER_H */
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