firmware loader: don't export cache_firmware and uncache_firmware

Looks no driver has the explict requirement for the two exported
API, just don't export them anymore.
Signed-off-by: NMing Lei <ming.lei@canonical.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/firmware_class.c

@@ -1244,7 +1244,7 @@ EXPORT_SYMBOL(request_firmware_nowait);
  * Return !0 otherwise
  *
  */
-int cache_firmware(const char *fw_name)
+static int cache_firmware(const char *fw_name)
 {
 	int ret;
 	const struct firmware *fw;
@@ -1259,7 +1259,6 @@ int cache_firmware(const char *fw_name)
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(cache_firmware);
 
 /**
  * uncache_firmware - remove one cached firmware image
@@ -1272,7 +1271,7 @@ EXPORT_SYMBOL_GPL(cache_firmware);
  * Return !0 otherwise
  *
  */
-int uncache_firmware(const char *fw_name)
+static int uncache_firmware(const char *fw_name)
 {
 	struct firmware_buf *buf;
 	struct firmware fw;
@@ -1290,7 +1289,6 @@ int uncache_firmware(const char *fw_name)
 
 	return -EINVAL;
 }
-EXPORT_SYMBOL_GPL(uncache_firmware);
 
 #ifdef CONFIG_PM_SLEEP
 static ASYNC_DOMAIN_EXCLUSIVE(fw_cache_domain);

include/linux/firmware.h

@@ -47,8 +47,6 @@ 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,
@@ -68,15 +66,6 @@ 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