Re: irq 21: nobody cared 2.6.24-rc1
From: Mark Lord
Date: Wed Nov 07 2007 - 14:18:52 EST
Bongani Hlope wrote:
On Thursday 01 November 2007 22:32:38 Andrew Morton wrote:
On Thu, 25 Oct 2007 10:45:36 +0200
Bongani Hlope <bonganilinux@xxxxxxxxxx> wrote:
Booting with irqpoll works
ls /proc/irq/21/ (with irqpoll)
ehci_hcd:usb1/ smp_affinity uhci_hcd:usb2/ uhci_hcd:usb3/
uhci_hcd:usb4/
Disabling IRQ #21
Was any earlier kernel version OK? 2.6.23?
Yes the 2.6.23 kernel works fine. This seems to happen when I boot the
2.6.24-rc1 kernel with an iPod attached (hope this helps), but the 2.6.23
kernel doesn't experience this problem.
..
Something in 2.6.24-rc* seems to be a lot more fussy about this kind
of situation than in 2.6.23. I have a driver (sata_qstor) that manages
a piece of hardware that unfortunately generates spurious interrupts
regularly.
With 2.6.23, it was only rarely bad enough to cause the "Disabling IRQ #nn"
event to occur. But in 2.6.24-rc*, it happens almost immediately now
(so, yes, I've gone and put a workaround into the driver for it).
Something's different.
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