IDE problem source ?

[<cah...@po...>]

Hi !

I think I found place where kernel hungs up when it tries to probe IDE
hardware. I played a bit with ide-probe.c and found out that kernel hungs
up on enable_irq. I've added two lines with printk. First is reached,
second not. Code below was cut out from ide-probe.c file,
probe_hwif:554-566.

        __restore_flags(flags); /* local CPU only */
        printk("probe_hwif: enabling irq\n"); /* debug */
        if (hwif->hw.ack_intr && hwif->irq)
                enable_irq(hwif->irq);
        printk("probe_hwif: irq enabled\n"); /* debug */
        for (unit = 0; unit < MAX_DRIVES; ++unit) {
                ide_drive_t *drive = &hwif->drives[unit];
                if (drive->present) {
                        ide_tuneproc_t *tuneproc = HWIF(drive)->tuneproc;
                        if (tuneproc != NULL && drive->autotune == 1)
                                tuneproc(drive, 255);
                }
        }

I hope that information would help a bit in tracing a bug.

Regards
Krystian Baclawski