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Suspend and Freeze Paths

Feb 25, 2008, 08:30 (0 Talkback[s])

"Issues reported during the suspend-to-disk process lead Linux creator Linus Torvalds to suggest, 'please--just make the f*cking suspend-to-disk use other routines already. 99% of all hardware needs to do exactly *nothing* on suspend-to-disk, and the ones that really do need things tend to need to not do a whole lot.' He went on to explain why sharing the code path for suspend-to-disk and freezing to RAM is wrong:

"'For example, the 'freeze' action for USB (which is one of the hardest things to suspend) should literally be something like just setting the controller STOP bit, and waiting for it to have stopped...'"

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