Messages in this thread | | | Date | Sun, 30 Mar 2008 19:40:45 +0200 | From | Stefan Richter <> | Subject | Re: nobody cared about IRQ 19 (firewire, on a HP 2510p notebook) |
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Martin Michlmayr wrote: > * Stefan Richter <stefanr@s5r6.in-berlin.de> [2008-03-30 13:11]: >> Martin, please check whether the same happens if you disable firewire-ohci >> in the kernel config (or blacklist it in the modprobe config) and use the >> ohci1394 driver instead. > > Yes, I get essentially the same message with the ohci1394 driver: > > [ 895.455783] irq 19: nobody cared (try booting with the "irqpoll" option) > [ 895.455783] Pid: 0, comm: swapper Not tainted 2.6.25-rc7-amd64 #1 > [ 895.455783] > [ 895.455783] Call Trace: > [ 895.455783] <IRQ> [<ffffffff88078155>] :ohci1394:ohci_irq_handler+0x4b/0x76e > [ 895.455783] [<ffffffff8026c883>] __report_bad_irq+0x30/0x72 > [ 895.455783] [<ffffffff8026cac2>] note_interrupt+0x1fd/0x23f > [ 895.455783] [<ffffffff8026d34f>] handle_fasteoi_irq+0xa5/0xc8 > [ 895.455783] [<ffffffff8020f53c>] do_IRQ+0x6d/0xd9 > [ 895.455783] [<ffffffff8020c46d>] ret_from_intr+0x0/0x19 > [ 895.455783] <EOI> [<ffffffff803a25a4>] menu_reflect+0x0/0x75 > [ 895.455783] [<ffffffff8800642b>] :processor:acpi_idle_enter_simple+0x18d/0x1fe > [ 895.455783] [<ffffffff803a1b2b>] cpuidle_idle_call+0x7a/0xb3 > [ 895.455783] [<ffffffff803a1ab1>] cpuidle_idle_call+0x0/0xb3 > [ 895.455783] [<ffffffff8020b06c>] cpu_idle+0xa9/0xd3 > [ 895.455783] > [ 895.455783] handlers: > [ 895.455783] [<ffffffff8807810a>] (ohci_irq_handler+0x0/0x76e [ohci1394]) > [ 895.455783] Disabling IRQ #19 > > dmesg is attached. >
Thanks.
I tend to believe it is a problem to be addressed in the x86 platform support, not a driver problem.
I Cc'd some random x86 folk... To rehash the issue:
- Controller: Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 04) Board: PM965/GM965/GL960 based The R5C832 is known to work with ohci1394 according to http://hardware4linux.info/component/14348/ and other reports.
- Martin also saw it happen with Linux 2.6.22.
- firewire-ohci + firewire-core as well as ohci1394 + ieee1394 appear to initialize the controller on Martin's laptop just fine. Among else this means that a number of register reads and writes succeed.
- Some time later, without having actually used the FireWire controller, "irq 19: nobody cared"/ "Disabling IRQ #19" occurs. AFAIU the code, this is apparently because firewire-ohci's or ohci1394's IRQ handler was called repeatedly but got either 0 or ~0 when reading the chip's interrupt event register. -- Stefan Richter -=====-==--- --== ====- http://arcgraph.de/sr/
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