linux-kernel - Re: [RESEND PATCH v2] mtd: spinand: read return badly if the last page has bitflips

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Date:   Tue, 25 Jun 2019 12:04:58 +0000
From:   Schrempf Frieder <frieder.schrempf@...tron.de>
To:     liaoweixiong <liaoweixiong@...winnertech.com>
CC:     Greg KH <gregkh@...uxfoundation.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Boris Brezillon <bbrezillon@...nel.org>,
        "Richard Weinberger" <richard@....at>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Chuanhong Guo <gch981213@...il.com>,
        "Marek Vasut" <marek.vasut@...il.com>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        Brian Norris <computersforpeace@...il.com>,
        David Woodhouse <dwmw2@...radead.org>
Subject: Re: [RESEND PATCH v2] mtd: spinand: read return badly if the last
 page has bitflips

On 25.06.19 13:56, liaoweixiong wrote:
> Oh, i am sorry that i had misunderstanded your letter.

No problem ;)

> Thank you for your document and guidance.

You're welcome!

> On 2019/6/25 PM 3:04, Schrempf Frieder wrote:
>> Hi liaoweixiong,
>>
>> On 25.06.19 05:08, Greg KH wrote:
>>> On Tue, Jun 25, 2019 at 09:02:29AM +0800, liaoweixiong wrote:
>>>> In case of the last page containing bitflips (ret > 0),
>>>> spinand_mtd_read() will return that number of bitflips for the last
>>>> page. But to me it looks like it should instead return max_bitflips like
>>>> it does when the last page read returns with 0.
>>>>
>>>> Signed-off-by: liaoweixiong <liaoweixiong@...winnertech.com>
>>>> Reviewed-by: Boris Brezillon <boris.brezillon@...labora.com>
>>>> Reviewed-by: Frieder Schrempf <frieder.schrempf@...tron.de>
>>>> Fixes: 7529df465248 ("mtd: nand: Add core infrastructure to support SPI NANDs")
>>>> ---
>>>>    drivers/mtd/nand/spi/core.c | 2 +-
>>>>    1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> <formletter>
>>>
>>> This is not the correct way to submit patches for inclusion in the
>>> stable kernel tree.  Please read:
>>>       https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
>>> for how to do this properly.
>>>
>>> </formletter>
>>
>> FYI, you should not send the patch to stable@...r.kernel.org, but
>> instead, as I said in my other reply, add the tag "Cc:
>> stable@...r.kernel.org". See "Option 1" in the document Greg referred to.
>>
>> Thanks,
>> Frieder
>>
>