Messages in this thread | | | Date | Wed, 14 Mar 2007 07:44:37 -0700 (PDT) | From | Alex Dubov <> | Subject | Weird MMC errors: 1 of 2 - bad ocr value |
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Recently, I've obtained a bug report concerning an MMC card. Two problems are described, both sporadic. Problem 1: illegal ocr value is returned. You may notice, in the non-working case, obviously incorrect ocr value (0xffffffff) is returned. The card won't work after this, unless reinserted. What, to your opinion, shall we do about it?
---- Normal case - everything works: ---------- Mar 14 09:15:39 Tirion kernel: mmc0: starting CMD1 arg 00300000 flags 00000061 Mar 14 09:15:39 Tirion kernel: tifm_sd tifm_sd0:1: executing opcode 0x1, arg: 0x300000, mask: 0x1340 Mar 14 09:15:39 Tirion kernel: tifm_sd tifm_sd0:1: host event: host_status 1001, flags 0 Mar 14 09:15:39 Tirion kernel: mmc0: req done (CMD1): 0/0/0: 00ff8000 00000000 00000000 00000000 Mar 14 09:15:39 Tirion kernel: mmc0: starting CMD1 arg 00300000 flags 00000061 Mar 14 09:15:39 Tirion kernel: tifm_sd tifm_sd0:1: executing opcode 0x1, arg: 0x300000, mask: 0x1340 Mar 14 09:15:39 Tirion kernel: tifm_sd tifm_sd0:1: host event: host_status 1001, flags 0 Mar 14 09:15:39 Tirion kernel: mmc0: req done (CMD1): 0/0/0: 00ff8000 00000000 00000000 00000000 Mar 14 09:15:39 Tirion kernel: mmc0: starting CMD1 arg 00300000 flags 00000061 Mar 14 09:15:39 Tirion kernel: tifm_sd tifm_sd0:1: executing opcode 0x1, arg: 0x300000, mask: 0x1340 Mar 14 09:15:39 Tirion kernel: tifm_sd tifm_sd0:1: host event: host_status 1, flags 0 Mar 14 09:15:39 Tirion kernel: mmc0: req done (CMD1): 0/0/0: 80ff8000 00000000 00000000 00000000 Mar 14 09:15:39 Tirion kernel: mmc0: starting CMD2 arg 00000000 flags 00000067 Mar 14 09:15:39 Tirion kernel: tifm_sd tifm_sd0:1: executing opcode 0x2, arg: 0x0, mask: 0x1240 Mar 14 09:15:39 Tirion kernel: tifm_sd tifm_sd0:1: host event: host_status 1, flags 0 Mar 14 09:15:39 Tirion kernel: mmc0: req done (CMD2): 0/0/0: 06000131 364d2020 20011d43 332479ad -------------------
------- Error case: OCR value is bad, card is left in bad state and won't work: --------- Mar 14 09:15:24 Tirion kernel: mmc0: starting CMD1 arg 00300000 flags 00000061 Mar 14 09:15:24 Tirion kernel: tifm_sd tifm_sd0:1: executing opcode 0x1, arg: 0x300000, mask: 0x1340 Mar 14 09:15:24 Tirion kernel: tifm_sd tifm_sd0:1: host event: host_status 1001, flags 0 Mar 14 09:15:24 Tirion kernel: mmc0: req done (CMD1): 0/0/0: 00ff8000 00000000 00000000 00000000 Mar 14 09:15:24 Tirion kernel: mmc0: starting CMD1 arg 00300000 flags 00000061 Mar 14 09:15:24 Tirion kernel: tifm_sd tifm_sd0:1: executing opcode 0x1, arg: 0x300000, mask: 0x1340 Mar 14 09:15:24 Tirion kernel: tifm_sd tifm_sd0:1: host event: host_status 1, flags 0 Mar 14 09:15:24 Tirion kernel: mmc0: req done (CMD1): 0/0/0: ffffffff 00000000 00000000 00000000 Mar 14 09:15:24 Tirion kernel: mmc0: starting CMD2 arg 00000000 flags 00000067 Mar 14 09:15:24 Tirion kernel: tifm_sd tifm_sd0:1: executing opcode 0x2, arg: 0x0, mask: 0x1240 Mar 14 09:15:24 Tirion kernel: tifm_sd tifm_sd0:1: host event: host_status 80, flags 0 Mar 14 09:15:24 Tirion kernel: mmc0: req done (CMD2): 1/0/0: 00000000 00000000 00000000 00000000 ---------------------
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