Re: 53c400 driver

[Alan Cox]

> 53c400a non-PNP still lock this system hard. It starts barking about a
> busy SCSI bus, and then I can fsck again.
> 
> To Alan : How hard is it to get thing beast (53c400 and family) to be SMP
> safe ?? Or is it better to start over again ?

The problem is that the code takes spinlocks recursively. The original
code (see 2.0's 5380 generic C code) uses cli/sti. It was converted to
use spin_lock() but not allowing for the recursive locking cases. I tried
to untangle the code paths but they are so ugly and some of the code is
sufficiently messy and unmaintained (for about 6 years) that I gave up
trying to decode it.

Alan