forked from mirrors/linux
bb6e8c2841
The existing check is outdated and confuses developers. Use the already existing IS_REACHABLE() defined on kconfig.h which makes the intention much clearer. Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Reported-by: Borislav Petkov <bp@alien8.de> Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Ackd-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20220112160053.723795-1-mcgrof@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
117 lines
3 KiB
C
117 lines
3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_FIRMWARE_H
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#define _LINUX_FIRMWARE_H
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#include <linux/types.h>
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#include <linux/compiler.h>
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#include <linux/gfp.h>
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#define FW_ACTION_NOUEVENT 0
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#define FW_ACTION_UEVENT 1
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struct firmware {
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size_t size;
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const u8 *data;
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/* firmware loader private fields */
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void *priv;
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};
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struct module;
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struct device;
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/*
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* Built-in firmware functionality is only available if FW_LOADER=y, but not
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* FW_LOADER=m
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*/
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#ifdef CONFIG_FW_LOADER
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bool firmware_request_builtin(struct firmware *fw, const char *name);
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#else
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static inline bool firmware_request_builtin(struct firmware *fw,
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const char *name)
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{
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return false;
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}
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#endif
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#if IS_REACHABLE(CONFIG_FW_LOADER)
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int request_firmware(const struct firmware **fw, const char *name,
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struct device *device);
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int firmware_request_nowarn(const struct firmware **fw, const char *name,
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struct device *device);
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int firmware_request_platform(const struct firmware **fw, const char *name,
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struct device *device);
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int request_firmware_nowait(
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struct module *module, bool uevent,
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const char *name, struct device *device, gfp_t gfp, void *context,
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void (*cont)(const struct firmware *fw, void *context));
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int request_firmware_direct(const struct firmware **fw, const char *name,
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struct device *device);
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int request_firmware_into_buf(const struct firmware **firmware_p,
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const char *name, struct device *device, void *buf, size_t size);
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int request_partial_firmware_into_buf(const struct firmware **firmware_p,
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const char *name, struct device *device,
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void *buf, size_t size, size_t offset);
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void release_firmware(const struct firmware *fw);
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#else
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static inline int request_firmware(const struct firmware **fw,
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const char *name,
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struct device *device)
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{
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return -EINVAL;
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}
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static inline int firmware_request_nowarn(const struct firmware **fw,
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const char *name,
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struct device *device)
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{
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return -EINVAL;
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}
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static inline int firmware_request_platform(const struct firmware **fw,
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const char *name,
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struct device *device)
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{
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return -EINVAL;
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}
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static inline int request_firmware_nowait(
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struct module *module, bool uevent,
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const char *name, struct device *device, gfp_t gfp, void *context,
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void (*cont)(const struct firmware *fw, void *context))
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{
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return -EINVAL;
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}
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static inline void release_firmware(const struct firmware *fw)
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{
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}
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static inline int request_firmware_direct(const struct firmware **fw,
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const char *name,
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struct device *device)
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{
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return -EINVAL;
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}
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static inline int request_firmware_into_buf(const struct firmware **firmware_p,
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const char *name, struct device *device, void *buf, size_t size)
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{
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return -EINVAL;
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}
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static inline int request_partial_firmware_into_buf
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(const struct firmware **firmware_p,
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const char *name,
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struct device *device,
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void *buf, size_t size, size_t offset)
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{
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return -EINVAL;
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}
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#endif
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int firmware_request_cache(struct device *device, const char *name);
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#endif
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