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Date: Mon, 21 Jan 2013 10:12:54 +0800
From: Huang Shijie <b32955@freescale.com>
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To: Vikram Narayanan <vikram186@gmail.com>
Subject: Re: mtd_oobtest fails with GPMI-NAND
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=E4=BA=8E 2013=E5=B9=B401=E6=9C=8819=E6=97=A5 00:52, Vikram Narayanan =E5=
=86=99=E9=81=93:
> Hi,
>
> When I try to run the mtd_oobtest on an i.Mx6Q board, it results in a=20
> failure with the following error.
> I'm using 3.5.7 Kernel.
>
> root@freescale:/# insmod mtd_oobtest.ko dev=3D6
> [ 7534.508880]
> [ 7534.511228] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D
> [ 7534.518460] mtd_oobtest: MTD device: 6
> [ 7534.523000] mtd_oobtest: MTD device size 304087040, eraseblock size=20
> 262144, page size 4096, count of eraseblocks 1160, pages per=20
> eraseblock 64, OOB size 128
> [ 7534.539301] mtd_oobtest: scanning for bad eraseblocks
> [ 7534.545345] mtd_oobtest: scanned 1160 eraseblocks, 0 are bad
> [ 7534.552482] mtd_oobtest: test 1 of 5
> [ 7534.556797] mtd_oobtest: erasing whole device
> [ 7537.523540] mtd_oobtest: erased 1160 eraseblocks
> [ 7537.528888] mtd_oobtest: writing OOBs of whole device
> [ 7537.534704] mtd_oobtest: error: writeoob failed at 0x0
> [ 7537.540562] mtd_oobtest: error: use_len 0, use_offset 0
> [ 7537.546565] mtd_oobtest: error -22 occurred
> [ 7537.551456] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D
>
> This boils down to the fake "struct nand_ecclayout" defined in
> <drivers/mtd/nand/gpmi-nand/gpmi-nand.c>
>
> Is there a way to run this test successfully?
The gpmi-nand may use all the oob. So the oobtest may fails.

thanks
Huang Shijie
>
> Regards,
> Vikram
>