From 2887b3959c8b2f6ed1f62ce95c0888aedb1ea84b Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Sat, 4 Aug 2012 12:01:22 +0800 Subject: firmware loader: introduce cache_firmware and uncache_firmware This patches introduce two kernel APIs of cache_firmware and uncache_firmware, both of which take the firmware file name as the only parameter. So any drivers can call cache_firmware to cache the specified firmware file into kernel memory, and can use the cached firmware in situations which can't request firmware from user space. Signed-off-by: Ming Lei Cc: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- include/linux/firmware.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux/firmware.h') diff --git a/include/linux/firmware.h b/include/linux/firmware.h index e85b771f3d8c..e4279fedb93a 100644 --- a/include/linux/firmware.h +++ b/include/linux/firmware.h @@ -47,6 +47,8 @@ int request_firmware_nowait( void (*cont)(const struct firmware *fw, void *context)); void release_firmware(const struct firmware *fw); +int cache_firmware(const char *name); +int uncache_firmware(const char *name); #else static inline int request_firmware(const struct firmware **fw, const char *name, @@ -65,6 +67,16 @@ static inline int request_firmware_nowait( static inline void release_firmware(const struct firmware *fw) { } + +static inline int cache_firmware(const char *name) +{ + return -ENOENT; +} + +static inline int uncache_firmware(const char *name) +{ + return -EINVAL; +} #endif #endif -- cgit v1.2.3