linux-kernel - Re: [PATCH][SCS] sd: Read Capacity if (16) fails

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Date:	Wed, 06 Aug 2008 10:27:02 -0400
From:	"Martin K. Petersen" <martin.petersen@...cle.com>
To:	Hugh Dickins <hugh@...itas.com>
Cc:	James Bottomley <James.Bottomley@...senPartnership.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][SCS] sd: Read Capacity if (16) fails

>>>>> "Hugh" == Hugh Dickins <hugh@...itas.com> writes:

Hugh> Commit e0597d70012c82e16ee152270a55d89d8bf66693 (sd: Identify
Hugh> DIF protection type and application tag ownership) says that if
Hugh> a disk is formatted with Inquiry bit PROTECT=1, it is required
Hugh> to support Read Capacity(16).  But my SD cards, accessed by
Hugh> builtin cardreader and generic USB storage, disagree.

Argh.  That's really broken.  USB storage has no business setting
PROTECT.

Can you send me the sg_inq output so I can see what else they are
returning?

-- 
Martin K. Petersen	Oracle Linux Engineering

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