Messages in this thread | | | From | Marek Vasut <> | Subject | Re: loading firmware while usermodehelper disabled. | Date | Mon, 2 Jan 2012 04:24:54 +0100 |
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> On Sun, 1 Jan 2012 20:39:45 +0000 > > Alan Cox <alan@lxorguk.ukuu.org.uk> wrote: > > When you suspend the power gets killed so the device loses its firmware > > and goes back to being a firmware requesting thing on resume. > > > > Worse still - you don't easily know if the device is in fact new and was > > added while suspended, or was always there. > > > > So for those devices you do need to load the firmware into them > > automatically after the resume to work out what they are and get the MAC > > to see if its the same wireless card or not. > > Well, that does not prevent you from caching the firmware once you > got it from userspace and keep it until module unload (or probably device > close), so that it is already available on resume.
That's actually wrong. If you cached every single firmware, the kernel would gulp down a lot of space that can't be swapped out!
M
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