linux-kernel - Re: [PATCH 1/3] scsi/trace: Use macros for getting driver byte, host byte, msg byte, and status byte

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Message-ID: <20140901151531.GA5136@lst.de>
Date:	Mon, 1 Sep 2014 17:15:31 +0200
From:	Christoph Hellwig <hch@....de>
To:	Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@...achi.com>
Cc:	Hannes Reinecke <hare@...e.de>, linux-scsi@...r.kernel.org,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Robert Elliott <Elliott@...com>, yrl.pp-manager.tt@...achi.com,
	linux-kernel@...r.kernel.org,
	"James E.J. Bottomley" <JBottomley@...allels.com>,
	Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>,
	"Ewan D. Milne" <emilne@...hat.com>,
	Doug Gilbert <dgilbert@...erlog.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Christoph Hellwig <hch@....de>
Subject: Re: [PATCH 1/3] scsi/trace: Use macros for getting driver byte,
	host byte, msg byte, and status byte

On Mon, Sep 01, 2014 at 12:33:28PM +0000, Yoshihiro YUNOMAE wrote:
> For getting driver byte, host byte, msg byte, and status byte, macros are
> implemented in scsi/scsi.h, so we use it.

As mentioned about three times in various previous scsi logging discussions
this is entirely wrong and breaks decoding binary trace buffers.

NAK.

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