Karl Hiramoto wrote:

Krzysztof Halasa wrote:
  

quoted

Russell King - ARM Linux [off-list ref] writes:

  
    

quoted

Normally you get a backtrace when a "nobody cared" message is issued -
this should tell you which driver is probably the cause.
    
      

Right - or that the other device is the cause (stuck IRQ line). So,
Karl, please just post the backtrace.
  
    

Krzysztof, you mentioned clearing the IRQ in the platform code, is there an example of this somewhere?


There is a Compact flash on hda connected the the HPT371N,  looking at 
the IDE code it looks like the drive my not be ready,  or the drive may 
raise the IRQ..

As soon as request_irq is called, the IRQ happens.

CCing linux-IDE now, as it may be an issue with this driver.


Backtrace below, sorry about some of the lines being wrapped.



  

I think i see the problem:

In the platform code, i should save the frequency of 33 Mhz in the 
correct register.

hpt366: HPT371N chipset detected
hpt366 0000:00:01.0: IDE controller (0x1103:0x0007 rev 0x02)
PCI: enabling device 0000:00:01.0 (0140 -> 0141)
hpt366 0000:00:01.0: IDE port disabled
hpt366 0000:00:01.0: no clock data saved by BIOS
hpt366 0000:00:01.0: DPLL base: 77 MHz, f_CNT: 120, assuming 50 MHz PCI
hpt366 0000:00:01.0: using 66 MHz DPLL clock
hpt366 0000:00:01.0: 100% native mode on irq 28
hda: KINGSTON, ATA DISK drive
irq 28: nobody cared (try booting with the "irqpoll" option)
Backtrace:
[<c002440c>] (dump_backtrace+0x0/0x110) from [<c002486c>] 
(dump_stack+0x18/0x1c)
 r6:10000000 r5:00000000 r4:c0309cd8
[<c0024854>] (dump_stack+0x0/0x1c) from [<c0055360>] 
(__report_bad_irq+0x38/0x90)
[<c0055328>] (__report_bad_irq+0x0/0x90) from [<c005551c>] 
(note_interrupt+0x164/0x1d8)
 r4:c0309cd8
[<c00553b8>] (note_interrupt+0x0/0x1d8) from [<c0056110>] 
(handle_level_irq+0x94/0xf0)
[<c005607c>] (handle_level_irq+0x0/0xf0) from [<c0020054>] (_text+0x54/0x6c)
 r5:c381dcd0 r4:0000001c
[<c0020000>] (_text+0x0/0x6c) from [<c00209a4>] (__irq_svc+0x24/0x80)
Exception stack(0xc381dc2c to 0xc381dc74)
dc20:                            c032ad40 c381c000 00000000 20000013 c381c000
dc40: 00000000 10000000 00000102 0000000a c032ad6c 00000000 c381dca4 c381dca8
dc60: c381dc74 c0035c9c c00359c4 20000013 ffffffff
 r5:0000001f r4:ffffffff
[<c0035974>] (__do_softirq+0x0/0xf8) from [<c0035c9c>] (irq_exit+0x44/0x4c)
[<c0035c58>] (irq_exit+0x0/0x4c) from [<c0020058>] (_text+0x58/0x6c)
[<c0020000>] (_text+0x0/0x6c) from [<c00209a4>] (__irq_svc+0x24/0x80)
Exception stack(0xc381dcd0 to 0xc381dd18)
dcc0:                                     00000000 69054200 00000000 00000000
dce0: c0309cd8 c3807f80 00000080 60000013 0000001c c386680c c0309cf8 c381dd40
dd00: c381dccc c381dd18 c00295e8 c0054b44 60000013 ffffffff
 r5:0000001f r4:ffffffff
[<c0054950>] (__setup_irq+0x0/0x2a8) from [<c0054cac>] 
(request_threaded_irq+0xb4/0xe0)
[<c0054bf8>] (request_threaded_irq+0x0/0xe0) from [<c01783c0>] 
(ide_host_register+0x444/0x60c)
[<c0177f7c>] (ide_host_register+0x0/0x60c) from [<c017c158>] 
(ide_pci_init_one+0xdc/0x10c)
[<c017c07c>] (ide_pci_init_one+0x0/0x10c) from [<c024cec0>] 
(hpt366_init_one+0x344/0x3a8)
 r8:c0321cac r7:c38737a0 r6:00000000 r5:c3814400 r4:c0321920
[<c024cb7c>] (hpt366_init_one+0x0/0x3a8) from [<c0015998>] 
(ide_scan_pcibus+0x50/0x124)
 r7:c0015948 r6:c0319330 r5:c3814400 r4:c0318fb4
[<c0015948>] (ide_scan_pcibus+0x0/0x124) from [<c0020290>] 
(do_one_initcall+0x58/0x190)
 r8:c0321cac r7:c0015948 r6:00000000 r5:c001c840 r4:c001c784
[<c0020238>] (do_one_initcall+0x0/0x190) from [<c0008744>] 
(kernel_init+0x78/0xe4)
[<c00086cc>] (kernel_init+0x0/0xe4) from [<c0033b28>] (do_exit+0x0/0x584)
 r5:00000000 r4:00000000
handlers:
[<c0174bc0>] (ide_intr+0x0/0x220)
Disabling IRQ #28