From: Douglas Gilbert <dgilbert@interlog.com>
To: linux-scsi@vger.kernel.org
Subject: scsi_check_sense() interfering with pass-through SCSI calls
Date: Tue, 27 Mar 2012 17:13:10 -0400 [thread overview]
Message-ID: <4F722D66.8070702@interlog.com> (raw)
I have been sent an example of sg_verify giving strange results
in BYTCHK mode. A bus analyzer is showing a properly formed
sense buffer with a sense_key of MISCOMPARE. In lk 3.3.0
scsi_check_sense() is detecting this case and setting
DID_TARGET_ERROR. For a pass-through call originating from
the sg or bsg driver that is unwelcome interference.
Since users of a SCSI command pass-through should be
checking the SCSI status and sense buffer, then commands
issued by the bsg and sg driver (probably st as well)
should not be calling scsi_check_sense() IMO.
Doug Gilbert
reply other threads:[~2012-03-27 21:13 UTC|newest]
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