linux-kernel - Re: [PATCH] iio: imu: inv_mpu6050: Replace scnprintf with sysfs

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Message-ID: <aGPopyM1KbbDS4IH@smile.fi.intel.com>
Date: Tue, 1 Jul 2025 16:54:47 +0300
From: Andy Shevchenko <andriy.shevchenko@...el.com>
To: Chelsy Ratnawat <chelsyratnawat2001@...il.com>
Cc: jean-baptiste.maneyrol@....com, jic23@...nel.org, dlechner@...libre.com,
	nuno.sa@...log.com, andy@...nel.org, linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iio: imu: inv_mpu6050: Replace scnprintf with sysfs_emit

On Tue, Jul 01, 2025 at 04:39:45AM -0700, Chelsy Ratnawat wrote:
> Documentation/filesystems/sysfs.rst mentions that show() should only
> use sysfs_emit() or sysfs_emit_at() when formating the value to be
> returned to user space. So replace scnprintf() with sysfs_emit().

...

>  	case ATTR_ACCL_MATRIX:
>  		m = st->plat_data.orientation;
>  
> -		return scnprintf(buf, PAGE_SIZE,
> +		return sysfs_emit(buf,
>  			"%d, %d, %d; %d, %d, %d; %d, %d, %d\n",

Now this fits one line

		return sysfs_emit(buf, "%d, %d, %d; %d, %d, %d; %d, %d, %d\n",

>  			m[0], m[1], m[2], m[3], m[4], m[5], m[6], m[7], m[8]);

-- 
With Best Regards,
Andy Shevchenko