From 6a927857d890658789e6e54b058ef8527de8200a Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Sat, 3 Nov 2012 17:48:16 +0800 Subject: firmware loader: document firmware cache mechanism This patch documents the firmware cache mechanism so that users of request_firmware() know that it can be called safely inside device's suspend and resume callback, and the device's firmware needn't be cached any more by individual driver itself to deal with firmware loss during system resume. Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- Documentation/firmware_class/README | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'Documentation/firmware_class') diff --git a/Documentation/firmware_class/README b/Documentation/firmware_class/README index e9fce78c4137..43fada989e65 100644 --- a/Documentation/firmware_class/README +++ b/Documentation/firmware_class/README @@ -119,3 +119,10 @@ on the setup, so I think that the choice on what firmware to make persistent should be left to userspace. + about firmware cache: + -------------------- + After firmware cache mechanism is introduced during system sleep, + request_firmware can be called safely inside device's suspend and + resume callback, and callers need't cache the firmware by + themselves any more for dealing with firmware loss during system + resume. -- cgit v1.2.1