• Stanislaw Gruszka's avatar
    rt2800pci: handle spurious interrupts · 4ba7d999
    Stanislaw Gruszka authored
    Some devices may generate spurious interrupts, we have to handle them
    otherwise interrupt line will be disabled with below message and driver
    will not work:
    
    [ 2052.114334] irq 17: nobody cared (try booting with the "irqpoll" option)
    [ 2052.114339] Pid: 0, comm: swapper Tainted: P           2.6.35.6-48.fc14.x86_64 #1
    [ 2052.114341] Call Trace:
    [ 2052.114342]  <IRQ>  [<ffffffff810a6e2b>] __report_bad_irq.clone.1+0x3d/0x8b
    [ 2052.114349]  [<ffffffff810a6f93>] note_interrupt+0x11a/0x17f
    [ 2052.114352]  [<ffffffff810a7a73>] handle_fasteoi_irq+0xa8/0xce
    [ 2052.114355]  [<ffffffff8100c2ea>] handle_irq+0x88/0x90
    [ 2052.114357]  [<ffffffff8146f034>] do_IRQ+0x5c/0xb4
    [ 2052.114360]  [<ffffffff81469593>] ret_from_intr+0x0/0x11
    [ 2052.114361]  <EOI>  [<ffffffff8102b7f9>] ? native_safe_halt+0xb/0xd
    [ 2052.114366]  [<ffffffff81010f03>] ? need_resched+0x23/0x2d
    [ 2052.114367]  [<ffffffff8101102a>] default_idle+0x34/0x4f
    [ 2052.114370]  [<ffffffff81008325>] cpu_idle+0xaa/0xcc
    [ 2052.114373]  [<ffffffff81461f2a>] start_secondary+0x24d/0x28e
    [ 2052.114374] handlers:
    [ 2052.114375] [<ffffffff81332944>] (usb_hcd_irq+0x0/0x7c)
    [ 2052.114378] [<ffffffffa00697da>] (rt2800pci_interrupt+0x0/0x18d [rt2800pci])
    [ 2052.114384] Disabling IRQ #17
    
    Resolve:
    https://bugzilla.redhat.com/show_bug.cgi?id=658451Reported-and-tested-by: default avatarAmir Hedayaty <hedayaty@gmail.com>
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatarStanislaw Gruszka <sgruszka@redhat.com>
    Acked-by: default avatarIvo van Doorn <IvDoorn@gmail.com>
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
    4ba7d999
rt2800pci.c 36.4 KB