linux-kernel - Re: 2.6.23-rcX SG_GET_SCSI

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Message-Id: <200710031452.55506.lists@naasa.net>
Date:	Wed, 3 Oct 2007 14:52:54 +0200
From:	Joerg Platte <lists@...sa.net>
To:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.23-rcX SG_GET_SCSI_ID regression?

Am Mittwoch, 3. Oktober 2007 schrieb Joerg Platte:
Hi,

> 2.6.22.8:
> open("/dev/scanner", O_RDWR|O_NONBLOCK|O_EXCL) = 3
> ioctl(3, SG_SET_TIMEOUT, 0xbfe40624)    = 0
> ioctl(3, SG_GET_VERSION_NUM, 0x8063fa4) = 0
> ioctl(3, SG_GET_SCSI_ID, 0xbfe405e0)    = 0
>
> 2.6.23-rc9:
> open("/dev/scanner", O_RDWR|O_NONBLOCK|O_EXCL) = 3
> ioctl(3, SG_SET_TIMEOUT, 0xbf84a834)    = 0
> ioctl(3, SG_GET_VERSION_NUM, 0x8062524) = 0
> ioctl(3, SG_GET_SCSI_ID, 0xbf84a7f0)    = -1 ENOTTY (Inappropriate ioctl
> for device)

After some reboots and tests I discovered, that this error occurs only when 
the scanner was turned off during system boot and was discovered later by 
invoking the following script:
for device in /sys/class/scsi_host/host*/scan ; do
        echo "0 - -" > $device
done
With 2.6.22 and before the scanner was fully functional when discovered by a 
bus rescan.

regards,
Jörg

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