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From: Takahiro Kuwano <tkuw584924@gmail.com>
To: Michael Walle <michael@walle.cc>,
	Tudor Ambarus <tudor.ambarus@microchip.com>,
	Pratyush Yadav <p.yadav@ti.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>
Cc: linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org
Subject: Re: [PATCH 6/6] mtd: spi-nor: sysfs: print JEDEC ID for generic flash driver
Date: Fri, 29 Jul 2022 10:25:19 +0900	[thread overview]
Message-ID: <12b9347e-4ce4-6248-659e-5abe3c1dfcd2@gmail.com> (raw)
In-Reply-To: <20220513133520.3945820-7-michael@walle.cc>

On 5/13/2022 10:35 PM, Michael Walle wrote:
> We don't have a database entry for the generic SPI-NOR flash driver and
> thus we don't have a JEDEC ID to print. Print the (cached) JEDEC ID
> instead.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>
> ---
>  drivers/mtd/spi-nor/sysfs.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mtd/spi-nor/sysfs.c b/drivers/mtd/spi-nor/sysfs.c
> index 20563c1926f4..c09bb832b3b9 100644
> --- a/drivers/mtd/spi-nor/sysfs.c
> +++ b/drivers/mtd/spi-nor/sysfs.c
> @@ -35,8 +35,10 @@ static ssize_t jedec_id_show(struct device *dev,
>  	struct spi_device *spi = to_spi_device(dev);
>  	struct spi_mem *spimem = spi_get_drvdata(spi);
>  	struct spi_nor *nor = spi_mem_get_drvdata(spimem);
> +	const u8 *id = nor->info->id_len ? nor->info->id : nor->id;
> +	u8 id_len = nor->info->id_len ?: SPI_NOR_MAX_ID_LEN;
>  
> -	return sysfs_emit(buf, "%*phN\n", nor->info->id_len, nor->info->id);
> +	return sysfs_emit(buf, "%*phN\n", id_len, id);
>  }
>  static DEVICE_ATTR_RO(jedec_id);
>  
> @@ -76,7 +78,7 @@ static umode_t spi_nor_sysfs_is_visible(struct kobject *kobj,
>  
>  	if (attr == &dev_attr_manufacturer.attr && !nor->manufacturer)
>  		return 0;
> -	if (attr == &dev_attr_jedec_id.attr && !nor->info->id_len)
> +	if (attr == &dev_attr_jedec_id.attr && !nor->info->id_len && !nor->id)
>  		return 0;
>  
>  	return 0444;

Reviewed-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>

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  reply	other threads:[~2022-07-29  1:25 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-13 13:35 [PATCH 0/6] mtd: spi-nor: generic flash driver Michael Walle
2022-05-13 13:35 ` [PATCH 1/6] mtd: spi-nor: hide jedec_id sysfs attribute if not present Michael Walle
2022-07-26 10:00   ` Takahiro Kuwano
2022-05-13 13:35 ` [PATCH 2/6] mtd: spi-nor: sysfs: hide manufacturer if it is not set Michael Walle
2022-07-26 10:04   ` Takahiro Kuwano
2022-05-13 13:35 ` [PATCH 3/6] mtd: spi-nor: remember full JEDEC flash ID Michael Walle
2022-07-29  1:00   ` Takahiro Kuwano
2022-05-13 13:35 ` [PATCH 4/6] mtd: spi-nor: move function declaration out of sfdp.h Michael Walle
2022-07-26 23:41   ` Takahiro Kuwano
2022-05-13 13:35 ` [PATCH 5/6] mtd: spi-nor: add generic flash driver Michael Walle
2022-05-13 14:47   ` kernel test robot
2022-07-21  9:32     ` Biju Das
2022-07-21  9:48     ` Michael Walle
2022-07-21  9:52       ` Biju Das
2022-10-28 18:00         ` Biju Das
2022-07-28  3:28   ` Tudor.Ambarus
2022-07-29  1:40   ` Takahiro Kuwano
2022-05-13 13:35 ` [PATCH 6/6] mtd: spi-nor: sysfs: print JEDEC ID for " Michael Walle
2022-07-29  1:25   ` Takahiro Kuwano [this message]
2022-07-26  8:06 ` [PATCH 0/6] mtd: spi-nor: " Tudor.Ambarus
2022-07-29  1:52   ` Takahiro Kuwano
2022-07-29  5:34     ` Tudor.Ambarus

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