On Mon, May 08, 2006 at 08:43:01AM -0700, Andrew Morton wrote:
> Andreas Mohr <[email protected]> wrote:
> >
> > Hi,
> >
> > On Sun, Apr 23, 2006 at 03:02:06PM -0700, Andrew Morton wrote:
> > > It's actually not an oops - it's a warning, telling us that i82365 is
> > > requesting an IRQ in non-sharing mode, but there's already a handler
> > > registered for that IRQ (which might or might not be shareable).
> >
> > And the same thing on a Toshiba Satellite 4280, P3/450, 2.6.17-rc3-ck2:
> >
> > setup_irq: irq handler mismatch
> > <c0103248> show_trace+0xd/0xf <c010325f> dump_stack+0x15/0x17
> > <c012aeca> setup_irq+0xd9/0xe8 <c012b002> request_irq+0x6e/0x8c
> > <c020cdfd> serial8250_startup+0x263/0x394 <c020a1aa> uart_startup+0x68/0xf1
> > <c020adba> uart_ioctl+0x554/0x847 <c01f31ed> tty_ioctl+0xbae/0xc36
> > <c0151eec> do_ioctl+0x3c/0x4f <c01520ed> vfs_ioctl+0x1ee/0x205
> > <c015212e> sys_ioctl+0x2a/0x44 <c01029bb> sysenter_past_esp+0x54/0x75
Hmm, someone's fiddling with setserial here...
> > # cat /proc/interrupts
> > CPU0
> > 0: 31607214 XT-PIC timer
> > 1: 11092 XT-PIC i8042
> > 2: 0 XT-PIC cascade
> > 3: 36368 XT-PIC pcnet_cs
> > 8: 3 XT-PIC rtc
> > 9: 84 XT-PIC acpi
> > 11: 73639 XT-PIC yenta, yenta, uhci_hcd:usb1, YMFPCI, irda0
> > 12: 9996 XT-PIC i8042
> > 14: 63830 XT-PIC ide0
> > 15: 536942 XT-PIC ide1
> > NMI: 0
> > LOC: 0
> > ERR: 0
>
> So 8250 is requesting an IRQ for non-sharing mode and it's actually
> failing, because something else is already using that IRQ. The difference
> is that the kernel now generates a warning when this happens.
Maybe someone is clearing the UPF_SHARE_IRQ flag? Which port is this?
> Russell, any opinions?
I'd like to get a better idea what's going on here. Is this a port on a
PCMCIA card? Is it a motherboard serial port? Which IRQ is it trying
to use? How was it setup?
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
-
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]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
