Re: [PATCH] mtd: spi-nor: debugfs: fix format specifier

From: Pratyush Yadav <p.yadav@ti.com>
To: Michael Walle <michael@walle.cc>
Cc: Tudor Ambarus <tudor.ambarus@microchip.com>,
	Dan Carpenter <dan.carpenter@oracle.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	<linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
	kernel test robot <lkp@intel.com>
Subject: Re: [PATCH] mtd: spi-nor: debugfs: fix format specifier
Date: Thu, 12 May 2022 18:02:13 +0530	[thread overview]
Message-ID: <20220512123213.fzly4gollonlo27p@ti.com> (raw)
In-Reply-To: <20220512112027.3771734-1-michael@walle.cc>

Hi Michael,

On 12/05/22 01:20PM, Michael Walle wrote:
> The intention was to print the JEDEC ID in the following format:
>   nn nn nn
> 
> In this case format specifier has to be "%*ph". Fix it.
> 
> Fixes: 0257be79fc4a ("mtd: spi-nor: expose internal parameters via debugfs")
> Reported-by: kernel test robot <lkp@intel.com>
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: Michael Walle <michael@walle.cc>
> ---
>  drivers/mtd/spi-nor/debugfs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mtd/spi-nor/debugfs.c b/drivers/mtd/spi-nor/debugfs.c
> index bf9fda5d4d0b..4b972bd4b80d 100644
> --- a/drivers/mtd/spi-nor/debugfs.c
> +++ b/drivers/mtd/spi-nor/debugfs.c
> @@ -81,7 +81,7 @@ static int spi_nor_params_show(struct seq_file *s, void *data)
>  	int i;
>  
>  	seq_printf(s, "name\t\t%s\n", info->name);
> -	seq_printf(s, "id\t\t%*phn\n", SPI_NOR_MAX_ID_LEN, nor->id);
> +	seq_printf(s, "id\t\t%*ph\n", SPI_NOR_MAX_ID_LEN, nor->id);

Patch does not apply. Are you basing this on some other commits you 
have? This line is different on my tree:

	seq_printf(s, "id\t\t%*phn\n", info->id_len, info->id);

In fact, I do not have a nor->id at all in my tree. BTW, I have applied 
https://lore.kernel.org/r/20220429102018.2361038-2-michael@walle.cc

I am going to apply the below patch. Please ACK/NACK. I did a quick 
test, the output stays the same before and after this patch.

-- 8< --
From c47452194641b5d27c20e557c84a46c85fd7ce37 Mon Sep 17 00:00:00 2001
From: Michael Walle <michael@walle.cc>
Date: Thu, 12 May 2022 13:20:27 +0200
Subject: [PATCH] mtd: spi-nor: debugfs: fix format specifier

The intention was to print the JEDEC ID in the following format:
  nn nn nn

In this case format specifier has to be "%*ph". Fix it.

Fixes: 0257be79fc4a ("mtd: spi-nor: expose internal parameters via debugfs")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20220512112027.3771734-1-michael@walle.cc
---
 drivers/mtd/spi-nor/debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/spi-nor/debugfs.c b/drivers/mtd/spi-nor/debugfs.c
index 1949905eefea..eaf84f7a0676 100644
--- a/drivers/mtd/spi-nor/debugfs.c
+++ b/drivers/mtd/spi-nor/debugfs.c
@@ -81,7 +81,7 @@ static int spi_nor_params_show(struct seq_file *s, void *data)
 	int i;
 
 	seq_printf(s, "name\t\t%s\n", info->name);
-	seq_printf(s, "id\t\t%*phn\n", info->id_len, info->id);
+	seq_printf(s, "id\t\t%*ph\n", info->id_len, info->id);
 	string_get_size(params->size, 1, STRING_UNITS_2, buf, sizeof(buf));
 	seq_printf(s, "size\t\t%s\n", buf);
 	seq_printf(s, "write size\t%u\n", params->writesize);

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.
