Messages in this thread | | | Date | Tue, 15 Feb 2005 09:13:26 +0800 | From | Bernard Blackham <> | Subject | Re: PATCH: Address lots of pending pm_message_t changes |
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[Trimmed Cc]
On Tue, Feb 15, 2005 at 11:15:56AM +1100, Nigel Cunningham wrote: > > Well, yes, if you switch pm_message_t into struct. But we are not yet > > ready to do that... it is going to be typedefed to u32 for 2.6.11... > > Ah. So I haven't realised that Bernard took your patches wholesale, > which is why we're fixing the compile errors too :> > > Okay then, I guess the whole thing isn't urgent then?
I was taking the whole shebang in order to differentiate between PMSG_FREEZE and PMSG_SUSPEND - they're currently typedef'd to the same thing (3), so drivers such as ide-disk can't decide whether or not they need to spin down for the atomic copy or for powering off. (Otherwise you'll find the HDD spinning down and up mid-suspend).
I believe vanilla swsusp passed "3" as the power state hence the HDD spun down and up anyway, so there were no regressions there, just bugs. Software Suspend 2 passed "4" as the power state which ide-disk.c treated as "flush caches, but don't spin down". This is what broke when the new typedefs went in, but would be fixed when they're complete (whole shebang).
Bernard.
-- Bernard Blackham <bernard at blackham dot com dot au> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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