linux-kernel - Re: [PATCH] mtd: spi-nor: stop printing superfluous debug info

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Message-ID: <20231127181514.19b99d2e@xps-13>
Date:   Mon, 27 Nov 2023 18:15:14 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Tudor Ambarus <tudor.ambarus@...aro.org>
Cc:     michael@...le.cc, jaimeliao.tw@...il.com, jaimeliao@...c.com.tw,
        pratyush@...nel.org, richard@....at, linux-mtd@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mtd: spi-nor: stop printing superfluous debug info

Hi Tudor,

tudor.ambarus@...aro.org wrote on Mon, 27 Nov 2023 16:59:08 +0000:

> The mtd data can be obtain with the mtd ioctls and the SPI NOR
> flash name can be determined interrogating the sysfs entries.
> Stop polluting the kernel log.

Actually I like these prints when developing/fixing stuff, it's a clear
indication of what's been discovered that is available even if for some
reason my rootfs is not available (which is common when the rootfs is
on a spi-nor).

So I would not trash all these lines personally... I believe the
dev_info can be lowered if you prefer, but dev_dbg is already meant for
debugging purposes and will anyway be discarded by default.

> Signed-off-by: Tudor Ambarus <tudor.ambarus@...aro.org>
> ---
>  drivers/mtd/spi-nor/core.c | 19 -------------------
>  1 file changed, 19 deletions(-)
> 
> diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
> index 25a64c65717d..6de76fd009d1 100644
> --- a/drivers/mtd/spi-nor/core.c
> +++ b/drivers/mtd/spi-nor/core.c
> @@ -3517,25 +3517,6 @@ int spi_nor_scan(struct spi_nor *nor, const char *name,
>  	/* No mtd_info fields should be used up to this point. */
>  	spi_nor_set_mtd_info(nor);
>  
> -	dev_info(dev, "%s (%lld Kbytes)\n", info->name,
> -			(long long)mtd->size >> 10);
> -
> -	dev_dbg(dev,
> -		"mtd .name = %s, .size = 0x%llx (%lldMiB), "
> -		".erasesize = 0x%.8x (%uKiB) .numeraseregions = %d\n",
> -		mtd->name, (long long)mtd->size, (long long)(mtd->size >> 20),
> -		mtd->erasesize, mtd->erasesize / 1024, mtd->numeraseregions);
> -
> -	if (mtd->numeraseregions)
> -		for (i = 0; i < mtd->numeraseregions; i++)
> -			dev_dbg(dev,
> -				"mtd.eraseregions[%d] = { .offset = 0x%llx, "
> -				".erasesize = 0x%.8x (%uKiB), "
> -				".numblocks = %d }\n",
> -				i, (long long)mtd->eraseregions[i].offset,
> -				mtd->eraseregions[i].erasesize,
> -				mtd->eraseregions[i].erasesize / 1024,
> -				mtd->eraseregions[i].numblocks);
>  	return 0;
>  }
>  EXPORT_SYMBOL_GPL(spi_nor_scan);


Thanks,
Miquèl