Messages in this thread |  | | From | "James A. Sutherland" <> | Subject | Re: Persistent module storage [was Linux 2.4 Status / TODO page] | Date | Mon, 6 Nov 2000 17:45:17 +0000 |
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On Mon, 06 Nov 2000, David Woodhouse wrote: > jas88@cam.ac.uk said: > > So set them on startup. NOT when the driver is first loaded. Put it > > in the rc.d scripts. > > No. You should initialise the hardware completely when the driver is > reloaded. Although the expected case is that the levels just happen to be > the same as the last time the module was loaded, you can't know that the > machine hasn't been suspended and resumed since then.
If suspend/resume changes the settings of the card, you need to deal with that as a separate issue - otherwise resume isn't restoring things properly. Perhaps you need to prevent module unloading. Just restoring the correct settings when the driver is loaded is definitely too late.
> jas88@cam.ac.uk said: > > No need. Let userspace save it somewhere, if that's needed. > > Don't troll, James. Reread the thread and see why doing it in userspace is > too late.
Why is it too late? There is no need for the driver to set *any* volume levels on load. When told to load the driver, just LOAD the DRIVER. Don't reset the card, or make ANY changes.
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