Messages in this thread | | | Date | Mon, 8 May 2006 17:34:53 +0100 | From | Russell King <> | Subject | Re: pcmcia oops on 2.6.17-rc[12] |
| |
On Mon, May 08, 2006 at 08:43:01AM -0700, Andrew Morton wrote: > Andreas Mohr <andi@rhlx01.fht-esslingen.de> 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 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/
| |