Re: SCSI host numbers?

From: Alan Cox (
Date: Wed Jan 02 2002 - 06:32:28 EST

> 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
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This archive was generated by hypermail 2b29 : Mon Jan 07 2002 - 21:00:16 EST