Messages in this thread | | | Date | Wed, 6 Aug 2008 16:34:16 +0100 (BST) | From | Hugh Dickins <> | Subject | Re: [PATCH][SCS] sd: Read Capacity if (16) fails |
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On Wed, 6 Aug 2008, Martin K. Petersen wrote: > >>>>> "Hugh" == Hugh Dickins <hugh@veritas.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?
sg_inq? I assume that's the same as the inquiry_len bytes at inquiry:
00000000: 00 8d 00 01 1f 01 00 00 47 65 6e 65 72 69 63 2d ........Generic- 00000010: 4d 75 6c 74 69 2d 43 61 72 64 20 20 20 20 20 20 Multi-Card 00000020: 31 2e 30 30 1.00
Ah, sg_inq is a command which spells that out, here you go:
standard INQUIRY: PQual=0 Device_type=0 RMB=1 version=0x00 [no conformance claimed] [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=1 SCCS=0 ACC=0 TGPS=0 3PC=0 Protect=1 BQue=0 EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0 [RelAdr=0] WBus16=0 Sync=0 Linked=0 [TranDis=0] CmdQue=0 length=36 (0x24) Peripheral device type: disk Vendor identification: Generic- Product identification: Multi-Card Product revision level: 1.00
Hugh
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