Messages in this thread | | | Date | Tue, 10 Aug 2004 12:08:46 +0200 | From | Pavel Machek <> | Subject | Re: [RFC] Fix Device Power Management States |
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Hi!
> > > Aha, so you are saying these do not need to be done in hardware order? > > > > AFAICT, no. > > As stated in my previous mail, I don't agree here... there are > dependencies that cannot be dealt otherwise. USB was an example > (ieee1394 is another), IDE is one, SCSI, i2c, whatever ... > > Of course, if we consider those "bus" drivers not to have class > and thus not to be stopped and only the "leaf" devices to get stopped, > that may work... I'm not sure we are not missing something there > though...
Stopping only leafs is *not* enough as usb host controllers do DMA.
Pavel -- Horseback riding is like software... ...vgf orggre jura vgf serr. - 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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