Re: Hard Lockup on 2.1.106 (bogus uart401 base)
Paul Gortmaker (linux@rasty.ph.unimelb.edu.au)
Tue, 16 Jun 1998 02:34:35 +1000 (EST)
> > applied 2.1.106ac1, played a sound file and got:
> > Too much work in interrupt on uart401 (0x6E756F53). UART jabbering??
>
> Ok that means the sound completion causes the sb uart401 chip to flag
> an interrupt request and the uart401 interrupt routine to get called.
>
> You've also caught the real bug - the hex value in brackets is the I/O
> port it thinks the uart401 is at. This indicates that the dev_id passed
> was wrong. Now I can go see why
Wheee. Surprised it didn't grenade in a more spectacular fashion :)
If the problem isnt obvious then perhaps something like:
typedef struct uart401_devc
{
+ int magic;
int base;
int irq;
int *osp;
and associated checks will be worthwhile?
Paul.
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