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    SubjectRe: 3.4.4: disabling irq
    On 2012-07-09 15:54, Clemens Ladisch wrote:
    > (forwarded to linux-usb)
    >
    > Udo van den Heuvel wrote:
    >> Hello,
    >>
    >> One moment the box is runing OK.
    >> One moment the 3.4.4 kernel decides to disable an interrupt.
    >> Why?
    >>
    >> Jul 8 07:43:49 box3 ntpd[5067]: parse: convert_rawdcf: INCOMPLETE DATA - time code only has 1 bits
    >> Jul 8 07:44:53 box3 kernel: irq 18: nobody cared (try booting with the "irqpoll" option)
    >> Jul 8 07:44:53 box3 kernel: Pid: 1501, comm: irq/18-ohci_hcd Tainted: G W 3.4.4 #1
    >> Jul 8 07:44:53 box3 kernel: Call Trace:
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff81095a76>] ? __report_bad_irq+0x36/0xd0
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff81095d7f>] ? note_interrupt+0x1cf/0x220
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff810945c0>] ? irq_thread_fn+0x40/0x40
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff8109443d>] ? irq_thread+0x13d/0x180
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff81094300>] ? wake_threads_waitq+0x50/0x50
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff81052015>] ? kthread+0x85/0x90
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff81405514>] ? kernel_thread_helper+0x4/0x10
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff81051f90>] ? kthread_freezable_should_stop+0x50/0x50
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff81405510>] ? gs_change+0xb/0xb
    >> Jul 8 07:44:53 box3 kernel: handlers:
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff810939d0>] irq_default_primary_handler threaded [<ffffffff812c7bb0>] usb_hcd_irq
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff810939d0>] irq_default_primary_handler threaded [<ffffffff812c7bb0>] usb_hcd_irq
    >> Jul 8 07:44:53 box3 kernel: [<ffffffff810939d0>] irq_default_primary_handler threaded [<ffffffff812c7bb0>] usb_hcd_irq
    >> Jul 8 07:44:53 box3 kernel: Disabling IRQ #18
    >> Jul 8 07:44:53 box3 kernel: pwc: Iso frame 0 has error -114
    >> Jul 8 07:44:53 box3 kernel: pwc: Iso frame 1 has error -18
    >> Jul 8 07:44:53 box3 kernel: pwc: Iso frame 2 has error -18
    >> Jul 8 07:44:53 box3 kernel: pwc: Iso frame 3 has error -18
    >> Jul 8 07:44:53 box3 kernel: pwc: Iso frame 4 has error -18
    >> Jul 8 07:44:53 box3 kernel: pwc: Iso frame 5 has error -18
    >> (etc; many more of the pwc messages)
    >>
    >> Kind regards,
    >> Udo
    >
    > ... and, with apparently the same mainboard:

    Over here:

    Manufacturer: Gigabyte Technology Co., Ltd.
    Product Name: GA-MA770-DS3

    >> Motherboard is Gigabyte GA-990XA-UD3
    >> CPU is AMD Bulldozer 6 Core version

    AMD 9550 4 core in my case, i.e.: less new.
    pwc driver is the main user for a webcam on USB.

    >> I'll attach the 2 dmesg logs, one from 3.2 and other from 3.4,
    >> hopefully someone can see what's wrong, there is a suggestion to boot
    >> with irqpoll, but really wanted someone's opinion on this.

    Any ideas why the IRQ stops working?

    Udo



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