firmware loader: document firmware cache mechanism

[~andy/linux] / drivers / base / firmware_class.c

diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 7888af7941a0fefd34460e10c8d544106b6cbb6f..d81460309182fde4177865a922f740c278c7d40c 100644 (file)
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -988,6 +988,9 @@ err_put_dev:
  *      firmware image for this or any other device.
  *
  *     Caller must hold the reference count of @device.
+ *
+ *     The function can be called safely inside device's suspend and
+ *     resume callback.
  **/
 int
 request_firmware(const struct firmware **firmware_p, const char *name,