From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.14]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 56D9622F384; Thu, 3 Jul 2025 13:40:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751550011; cv=none; b=HC4oXj+HnkuZ8EyxX4cUB9FmibPbHyxHfRi2PkJAlsxpEVzx5FqrJyfHfGOw/6QA2pQfIws1e9k5c6qvw6mRK56nXi5GkiRCeNYDTnpEj5WMtcJ5pgKlmVhx3ZNNLotJ7yI90IPj63njMYTWFAgDaFNuOXqAEXPvm3n0mIPDq30= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751550011; c=relaxed/simple; bh=7tjoXBgVlhft02eD+orqPpaW/4xw5wOeTcdUF5x4nz8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CrFCBjuQ0ko903/sLfSy1+Q66QyvftzNY2n/jlgb1gZq4ZooRCYxztO5Fx1n7NQBa18z9I/5HrCh5mFzzK4iCXS4KfwDyQYxedqdMH6dVqnu4oZRFTlvtruVZn41bgDMpY6e1u4pUhpd0SW6PR+gEqEgJwsp+oKbKLA+FDflPJQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=HnVq0hfS; arc=none smtp.client-ip=192.198.163.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="HnVq0hfS" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1751550009; x=1783086009; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=7tjoXBgVlhft02eD+orqPpaW/4xw5wOeTcdUF5x4nz8=; b=HnVq0hfSoTjfPrKKe5k0tISD1hj3wgyrvmohg4cn2b3XPTZi7ygrkVpy 9YxrTNB6sGm16vpRYqTDvH7qqfCvQSGD3FP2SA0qS5vqnvqaszlXTMjPI 3MHOVggxd6B+pFDaB7Abtjq+xXTLq1VUBR8qLAwzCsUcvVdbT6xc5g/0a QUCipQY11XLRrJgCISmOu/Wxc/SUMLCR5vTXiqLBt5S2eKtKfivWdkT+x Ru3l6oRZF9mZIni1CC8g9h2bmId/3kMa+jsMcP88z6cUuvI+HTm/7AjCm p7ptwhiBYsRJ321/NVvBeH9r4tkDD4AHwqJXFWDnWUSferA1iGqci/oWC g==; X-CSE-ConnectionGUID: Flu4cnZJQmK9ALTQfqbkQA== X-CSE-MsgGUID: 8Zonhtk0R+iVI2IB69sm8w== X-IronPort-AV: E=McAfee;i="6800,10657,11483"; a="53971323" X-IronPort-AV: E=Sophos;i="6.16,284,1744095600"; d="scan'208";a="53971323" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jul 2025 06:40:08 -0700 X-CSE-ConnectionGUID: gDTPfZpVQUS2W0Y+nOqTBg== X-CSE-MsgGUID: qrOytyl9S62aZ1oQrJ7V+Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,284,1744095600"; d="scan'208";a="191554579" Received: from smile.fi.intel.com ([10.237.72.52]) by orviesa001.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jul 2025 06:40:06 -0700 Received: from andy by smile.fi.intel.com with local (Exim 4.98.2) (envelope-from ) id 1uXKAU-0000000CDXy-3qwF; Thu, 03 Jul 2025 16:40:02 +0300 Date: Thu, 3 Jul 2025 16:40:02 +0300 From: Andy Shevchenko To: Akshay Bansod Cc: Lorenzo Bianconi , Jonathan Cameron , David Lechner , Nuno =?iso-8859-1?Q?S=E1?= , Andy Shevchenko , linux-kernel-mentees@lists.linuxfoundation.org, skhan@linuxfoundation.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] iio: st_lsm6dsx: Replace scnprintf with sysfs_emit Message-ID: References: <20250703053900.36530-1-akbansd@gmail.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250703053900.36530-1-akbansd@gmail.com> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo On Thu, Jul 03, 2025 at 11:08:59AM +0530, Akshay Bansod wrote: > Update the sysfs interface for sampling frequency and scale attributes. > Replace `scnprintf()` with `sysfs_emit_at()` which is PAGE_SIZE-aware > and recommended for use in sysfs. 'must' is stronger than 'recommendation'. Of has the documentation been changed lately? ... > st_lsm6dsx_sysfs_sampling_frequency_avail(struct device *dev, > odr_table = &sensor->hw->settings->odr_table[sensor->id]; > for (i = 0; i < odr_table->odr_len; i++) > - len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%03d ", > - odr_table->odr_avl[i].milli_hz / 1000, > - odr_table->odr_avl[i].milli_hz % 1000); > + len += sysfs_emit_at(buf, len, "%d.%03d ", > + odr_table->odr_avl[i].milli_hz / 1000, > + odr_table->odr_avl[i].milli_hz % 1000); > buf[len - 1] = '\n'; My gosh, this is error prone. I'm wondering when some CIs will start to complain on this line. But this was already before your change... > return len; ... > fs_table = &hw->settings->fs_table[sensor->id]; > for (i = 0; i < fs_table->fs_len; i++) > - len += scnprintf(buf + len, PAGE_SIZE - len, "0.%09u ", > - fs_table->fs_avl[i].gain); > + len += sysfs_emit_at(buf, len, "0.%09u ", > + fs_table->fs_avl[i].gain); > buf[len - 1] = '\n'; Ditto. -- With Best Regards, Andy Shevchenko