siimage, 2.5.74 and irq 19: nobody cared!

[Miquel van Smoorenburg]

I was running 2.5.72-mm2 on our transit usenet news server
(700 GB in/day and 1 TB out/day) which ran just fine, until I
had some ext3 corruption on the /news partition. I remember
having seen something about this in the -mm changelogs.

So I tried 2.5.74 and 2.5.74-mm2, but with those kernels the
siimage.c driver doesn't work. The card is detected, but a bit
later in the boot process its IRQ is disabled and it won't work.
Log is below. As said, it worked fine with 2.5.72-mm2 (OK, needed
to enabled UDMA with hdparm, but other than that, no problems):

Jul  8 12:23:09 quantum kernel: irq 19: nobody cared!
Jul  8 12:23:09 quantum kernel: Call Trace:
Jul  8 12:23:09 quantum kernel:  [__report_bad_irq+50/144] __report_bad_irq+0x32/0x90
Jul  8 12:23:09 quantum kernel:  [note_interrupt+80/120] note_interrupt+0x50/0x78
Jul  8 12:23:09 quantum kernel:  [do_IRQ+179/280] do_IRQ+0xb3/0x118
Jul  8 12:23:09 quantum kernel:  [default_idle+0/52] default_idle+0x0/0x34
Jul  8 12:23:09 quantum kernel:  [rest_init+0/72] _stext+0x0/0x48
Jul  8 12:23:09 quantum kernel:  [common_interrupt+24/32] common_interrupt+0x18/0x20
Jul  8 12:23:09 quantum kernel:  [default_idle+0/52] default_idle+0x0/0x34
Jul  8 12:23:09 quantum kernel:  [rest_init+0/72] _stext+0x0/0x48
Jul  8 12:23:09 quantum kernel:  [default_idle+41/52] default_idle+0x29/0x34
Jul  8 12:23:09 quantum kernel:  [cpu_idle+55/72] cpu_idle+0x37/0x48
Jul  8 12:23:09 quantum kernel:  [rest_init+69/72] _stext+0x45/0x48
Jul  8 12:23:09 quantum kernel:  [start_kernel+322/328] start_kernel+0x142/0x148Jul  8 12:23:09 quantum kernel:
Jul  8 12:23:09 quantum kernel: handlers:
Jul  8 12:23:09 quantum kernel: [ide_intr+0/352] (ide_intr+0x0/0x160)
Jul  8 12:23:09 quantum kernel: [ide_intr+0/352] (ide_intr+0x0/0x160)
Jul  8 12:23:09 quantum kernel: Disabling IRQ #19

Mike.