On Saturday, 30 of July 2005 22:54, Russell King wrote:
> On Sat, Jul 30, 2005 at 01:36:24PM -0700, Linus Torvalds wrote:
> > On Sat, 30 Jul 2005, Russell King wrote:
> > >
> > > What this probably means is that we need some way to turn off interrupts
> > > from devices on suspend, and on resume, keep them off until drivers
> > > have had a chance to quiesce all devices, turn them back on, and then
> > > do full resume.
> >
> > No, we just need to suspend and resume the interrupt controller properly.
> > Which we had the technology for, and we actually used to do, but for some
> > (incorrect) reason ACPI people thought it should be up to individual
> > drivers.
>
> I don't think so - I believe one of the problem cases is where you
> have a screaming interrupt caused by an improperly setup device.
This is happening in the real life, it seems (eg please see
http://bugzilla.kernel.org/show_bug.cgi?id=4416#c36).
> Consider the case where you have a shared interrupt line and you're
> partially through resuming devices, when one unresumed device (setup
> by the BIOS) suddenly starts asserting its interrupt.
>
> The kernel then disables the source. Unfortunately, that was the IRQ
> for your USB host, which has your USB keyboard and mouse attached.
Also, this has been discussed in this thread on the linux-pm list:
http://lists.osdl.org/pipermail/linux-pm/2005-May/000955.html
Greets,
Rafael
--
- Would you tell me, please, which way I ought to go from here?
- That depends a good deal on where you want to get to.
-- Lewis Carroll "Alice's Adventures in Wonderland"
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
| |
 |