From: Boris Brezillon <boris.brezillon@collabora.com>
To: JH <jupiter.hce@gmail.com>
Cc: linux-mtd <linux-mtd@lists.infradead.org>
Subject: Re: mtd_nandbiterrs errors
Date: Wed, 5 Feb 2020 21:23:01 +0100 [thread overview]
Message-ID: <20200205212301.1e26c263@collabora.com> (raw)
In-Reply-To: <CAA=hcWSX9tBOjX8DEsg+=9NPdKzdwQBa1PyxA-r9vCLVsz52tg@mail.gmail.com>
On Wed, 5 Feb 2020 22:28:50 +1100
JH <jupiter.hce@gmail.com> wrote:
> Resolved, using kernel test probably a bad idea, change to use
> mtd-utils nandbiterrs resolved issue.
I doubt it solved the real problem: ECC is not working properly.
> > [ 695.257984] mtd_nandbiterrs: Inserted biterror @ 0/0
> > [ 695.262984] mtd_nandbiterrs: rewrite page
> > [ 695.273646] mtd_nandbiterrs: read_page
> > [ 695.280000] mtd_nandbiterrs: Read reported 2 corrected bit errors
The ECC engine should report an uncorrectable error here, not 2
corrected bits. BTW, an ECC of 2bits/512bytes sounds weak for a 2k-page
NAND. What's the NAND part you're testing with?
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next prev parent reply other threads:[~2020-02-05 20:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-04 12:32 mtd_nandbiterrs errors JH
2020-02-05 11:28 ` JH
2020-02-05 20:23 ` Boris Brezillon [this message]
2020-02-06 0:20 ` JH
2020-02-06 2:03 ` Steve deRosier
2020-02-06 6:42 ` JH
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