Messages in this thread |  | | Date | Fri, 09 May 2003 08:00:35 -0700 | From | "Martin J. Bligh" <> | Subject | [Bug 693] New: boot hang early, probably because of shared IRQ not handled correctly by hcd.c / usb_hcd_irq |
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http://bugme.osdl.org/show_bug.cgi?id=693
Summary: boot hang early, probably because of shared IRQ not handled correctly by hcd.c / usb_hcd_irq Kernel Version: 2.5.69-bk4 Status: NEW Severity: blocking Owner: greg@kroah.com Submitter: stephane.loeuillet@tiscali.fr
Distribution: Mandrake 9.1 x86
Hardware Environment: NForce2 chipset (no IGP but has 2 built in ETH100 + AC97 + OHCI + EHCI) + external USB2-IDE disk drive
Problem Description:
quite early in the boot process (/root not yet mounted, so hardware/pci probing), it hangs, repeating me the now usual 'irq 10 : nobody noticed!' several times (looking at arch/i386/kernel/irq.c: handle_IRQ_event, i would say it displayed it 100 times)
then system is frozen.
as there has been some IRQ changes not long ago in 2.5 kernel, i think this bug is quite new. but i saw another bug report with "irq 5 : nobody noticed!" but this time in ISApnp probe (which i haven't compiled in)
the other bug report : http://bugzilla.kernel.org/show_bug.cgi?id=615 perhaps a related one : http://www.ussg.iu.edu/hypermail/linux/kernel/0305.0/0521.html
============================================================================= partial trace (hand made, from numbers displayed and System.map content)
c010c4f0 T handle_IRQ_event c010c730 T do_IRQ c010acf0 t common_interrupt c01208b0 T do_softirq c010c730 T do_IRQ c010acf0 t common_interrupt c010cd50 T setup_irq c02319e0 T usb_hcd_irq c010c880 T request_irq c02340e0 T usb_deregister_dev c01c80e0 t pci_device_probe c02002d0 t bus_match c02003e0 t driver_attach c0200b30 T driver_register c01c8230 T pci_register_driver c01c8230 T pci_register_driver ============================================================================= here is the function i suppose to be the guilty one :
drivers/usb/core/hcd.c :
irqreturn_t usb_hcd_irq (int irq, void *__hcd, struct pt_regs * r) { struct usb_hcd *hcd = __hcd; int start = hcd->state;
if (unlikely (hcd->state == USB_STATE_HALT)) /* irq sharing? */ return IRQ_NONE;
hcd->driver->irq (hcd, r); if (hcd->state != start && hcd->state == USB_STATE_HALT) usb_hc_died (hcd); return IRQ_HANDLED; }
unfortunatly, my C knowlegde is quite limited, so i don't know how to fix it myself.
============================================================================= partial lspci -vv output (only hardware using IRQ 10 when booting my 2.4.21) :
00:02.0 USB Controller: nVidia Corporation nForce2 USB Controller (rev a3) (prog-if 10 [OHCI]) Subsystem: Asustek Computer, Inc. A7N8X Mainboard Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 0 (750ns min, 250ns max) Interrupt: pin A routed to IRQ 10 Region 0: Memory at e8085000 (32-bit, non-prefetchable) [size=4K] Capabilities: [44] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:06.0 Multimedia audio controller: nVidia Corporation nForce2 AC97 Audio Controler (MCP) (rev a1) Subsystem: Asustek Computer, Inc.: Unknown device 8095 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 0 (500ns min, 1250ns max) Interrupt: pin A routed to IRQ 10 Region 0: I/O ports at c000 [size=256] Region 1: I/O ports at c400 [size=128] Region 2: Memory at e8086000 (32-bit, non-prefetchable) [size=4K] Capabilities: [44] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
02:01.0 Ethernet controller: 3Com Corporation 3C920B-EMB Integrated Fast Ethernet Controller (rev 40) Subsystem: Asustek Computer, Inc.: Unknown device 80ab Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (2500ns min, 2500ns max), cache line size 08 Interrupt: pin A routed to IRQ 10 Region 0: I/O ports at b000 [size=128] Region 1: Memory at e5000000 (32-bit, non-prefetchable) [size=128] Expansion ROM at <unassigned> [disabled] [size=128K] Capabilities: [dc] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0 DScale=2 PME-
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