linux-kernel - Re: sg timeout problem

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Date:	Wed, 6 May 2009 10:38:52 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	"Norman Diamond" <n0diamond@...oo.co.jp>
Cc:	<linux-kernel@...r.kernel.org>, <linux-scsi@...r.kernel.org>
Subject: Re: sg timeout problem

> But if sg is running on top of an actual SCSI driver, someone aborts the
> ioctl after 3 seconds.  The ioctl returns success even though the operation
> didn't complete.  I tried this with two Adaptec drivers and one NinjaSCSI 
> driver with 100% repro.
> 
> What am I missing?  I need the call to run to completion. 

If you set it to the max of a signed int does it behave, or to a large
value thats well under the limit. That will help tell if there is a
problem with sign handling in the scsi code somewhere or it is getting
multiplied up for some reason.
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