From: Martin Diehl <lists@mdiehl.de>

Seems there are two problems:

* interrupt handler expects to find the host in aha152x_host[] array which
  is currently set too late after probing irq's

* despite testing for NULL swintr derefences a shpnt==NULL anyway, looks
  like a victim of HOSTNO obfuscation ;-)

The patch below fixes the issue for me - succesfully tested to compile,
load and even use my attached scanner.



 drivers/scsi/aha152x.c |   15 ++++++++++-----
 1 files changed, 10 insertions(+), 5 deletions(-)