rename: _request_firmware_load() fw_load_sysfs_fallback()

This reflects much clearer what is being done.
While at it, kdoc'ify it.

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/base/firmware_loader/fallback.c b/drivers/base/firmware_loader/fallback.c
index d6838e7..0a8ec7f 100644
--- a/drivers/base/firmware_loader/fallback.c
+++ b/drivers/base/firmware_loader/fallback.c
@@ -535,8 +535,15 @@ fw_create_instance(struct firmware *firmware, const char *fw_name,
 	return fw_sysfs;
 }
 
-/* load a firmware via user helper */
-static int _request_firmware_load(struct fw_sysfs *fw_sysfs,
+/**
+ * fw_load_sysfs_fallback - load a firmware via the syfs fallback mechanism
+ * @fw_sysfs: firmware syfs information for the firmware to load
+ * @opt_flags: flags of options, FW_OPT_*
+ * @timeout: timeout to wait for the load
+ *
+ * In charge of constructing a sysfs fallback interface for firmware loading.
+ **/
+static int fw_load_sysfs_fallback(struct fw_sysfs *fw_sysfs,
 				  unsigned int opt_flags, long timeout)
 {
 	int retval = 0;
@@ -621,7 +628,7 @@ static int fw_load_from_user_helper(struct firmware *firmware,
 	}
 
 	fw_sysfs->fw_priv = firmware->priv;
-	ret = _request_firmware_load(fw_sysfs, opt_flags, timeout);
+	ret = fw_load_sysfs_fallback(fw_sysfs, opt_flags, timeout);
 
 	if (!ret)
 		ret = assign_fw(firmware, device, opt_flags);