lkml.org 
[lkml]   [2002]   [Jan]   [2]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: SCSI host numbers?
DateWed, 2 Jan 2002 11:32:28 +0000 (GMT)
FromAlan Cox <>
> Under some scenarios Linux assigns the same
> host_no to more than one scsi device.
> 
> Can someone tell me what is the intended behavior?

A number should never be reissued.

> The problem is that a newly registered device gets
> its host_no from max_scsi_host. max_scsi_host is
> decremented when a device driver is unregistered
> (see drivers/scsi/host.c) allowing a second new
> host to reuse the same host_no.

I guess it needs to either only decrement the count if we are the highest one 
(trivial hack) or scan for a free number/keep a free bitmap. The devfs code
has a handy little unique_id function for that 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:15    [from the cache]
©2003-2008