From nobody Wed Sep 17 01:23:59 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3D0D7C4332F for ; Fri, 23 Dec 2022 19:16:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231627AbiLWTNm (ORCPT ); Fri, 23 Dec 2022 14:13:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33620 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230159AbiLWTNj (ORCPT ); Fri, 23 Dec 2022 14:13:39 -0500 Received: from msg-1.mailo.com (msg-1.mailo.com [213.182.54.11]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A3FC61D31C for ; Fri, 23 Dec 2022 11:13:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mailo.com; s=mailo; t=1671822815; bh=P9f871po8Uo8UcGE1zsHMZs+AHZmF24K1+rDfxehJFg=; h=X-EA-Auth:Date:From:To:Cc:Subject:Message-ID:MIME-Version: Content-Type; b=XYi4v4kjIJPxH5cMqOqux+jnljqI4aGLjBVynUZX7MqoP0XwfSblwKXX/K47nslBh JteUa7VIZINGpeGYS9z/nsIjO/HAChIW2URxlosO70GpL20lNM9PLVls+BImZR2Te3 A+c0S5liHmaN6JE4za868OVSWkYk19QCem1cFyI4= Received: by b-6.in.mailobj.net [192.168.90.16] with ESMTP via ip-206.mailobj.net [213.182.55.206] Fri, 23 Dec 2022 20:13:35 +0100 (CET) X-EA-Auth: CMqPvAe+WFpNOZSsoaT9NF8Tn+9lylTO4aSUXsNYPCJGfjNIJGotu0X7tsZnjdIXiEZvpsqJUdLq/TDoTmJfrf1JinuelhvK Date: Sat, 24 Dec 2022 00:43:30 +0530 From: Deepak R Varma To: linux-kernel@vger.kernel.org Cc: Saurabh Singh Sengar , Praveen Kumar , Deepak R Varma Subject: [PATCH] most: core: Use sysfs_emit in show function callsbacks Message-ID: MIME-Version: 1.0 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" According to Documentation/filesystems/sysfs.rst, the show() callback function of kobject attributes should strictly use sysfs_emit instead of sprintf family functions. Issue identified using the coccinelle device_attr_show.cocci script. Signed-off-by: Deepak R Varma --- drivers/most/core.c | 61 ++++++++++++++++++++++----------------------- 1 file changed, 30 insertions(+), 31 deletions(-) diff --git a/drivers/most/core.c b/drivers/most/core.c index e4412c7d25b0..f9ca6a7d885c 100644 --- a/drivers/most/core.c +++ b/drivers/most/core.c @@ -208,8 +208,8 @@ static ssize_t number_of_packet_buffers_show(struct dev= ice *dev, struct most_channel *c =3D to_channel(dev); unsigned int i =3D c->channel_id; - return snprintf(buf, PAGE_SIZE, "%d\n", - c->iface->channel_vector[i].num_buffers_packet); + return sysfs_emit(buf, "%d\n", + c->iface->channel_vector[i].num_buffers_packet); } static ssize_t number_of_stream_buffers_show(struct device *dev, @@ -219,8 +219,8 @@ static ssize_t number_of_stream_buffers_show(struct dev= ice *dev, struct most_channel *c =3D to_channel(dev); unsigned int i =3D c->channel_id; - return snprintf(buf, PAGE_SIZE, "%d\n", - c->iface->channel_vector[i].num_buffers_streaming); + return sysfs_emit(buf, "%d\n", + c->iface->channel_vector[i].num_buffers_streaming); } static ssize_t size_of_packet_buffer_show(struct device *dev, @@ -230,8 +230,8 @@ static ssize_t size_of_packet_buffer_show(struct device= *dev, struct most_channel *c =3D to_channel(dev); unsigned int i =3D c->channel_id; - return snprintf(buf, PAGE_SIZE, "%d\n", - c->iface->channel_vector[i].buffer_size_packet); + return sysfs_emit(buf, "%d\n", + c->iface->channel_vector[i].buffer_size_packet); } static ssize_t size_of_stream_buffer_show(struct device *dev, @@ -241,8 +241,8 @@ static ssize_t size_of_stream_buffer_show(struct device= *dev, struct most_channel *c =3D to_channel(dev); unsigned int i =3D c->channel_id; - return snprintf(buf, PAGE_SIZE, "%d\n", - c->iface->channel_vector[i].buffer_size_streaming); + return sysfs_emit(buf, "%d\n", + c->iface->channel_vector[i].buffer_size_streaming); } static ssize_t channel_starving_show(struct device *dev, @@ -251,7 +251,7 @@ static ssize_t channel_starving_show(struct device *dev, { struct most_channel *c =3D to_channel(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", c->is_starving); + return sysfs_emit(buf, "%d\n", c->is_starving); } static ssize_t set_number_of_buffers_show(struct device *dev, @@ -260,7 +260,7 @@ static ssize_t set_number_of_buffers_show(struct device= *dev, { struct most_channel *c =3D to_channel(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", c->cfg.num_buffers); + return sysfs_emit(buf, "%d\n", c->cfg.num_buffers); } static ssize_t set_buffer_size_show(struct device *dev, @@ -269,7 +269,7 @@ static ssize_t set_buffer_size_show(struct device *dev, { struct most_channel *c =3D to_channel(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", c->cfg.buffer_size); + return sysfs_emit(buf, "%d\n", c->cfg.buffer_size); } static ssize_t set_direction_show(struct device *dev, @@ -279,10 +279,10 @@ static ssize_t set_direction_show(struct device *dev, struct most_channel *c =3D to_channel(dev); if (c->cfg.direction & MOST_CH_TX) - return snprintf(buf, PAGE_SIZE, "tx\n"); + return sysfs_emit(buf, "tx\n"); else if (c->cfg.direction & MOST_CH_RX) - return snprintf(buf, PAGE_SIZE, "rx\n"); - return snprintf(buf, PAGE_SIZE, "unconfigured\n"); + return sysfs_emit(buf, "rx\n"); + return sysfs_emit(buf, "unconfigured\n"); } static ssize_t set_datatype_show(struct device *dev, @@ -294,10 +294,9 @@ static ssize_t set_datatype_show(struct device *dev, for (i =3D 0; i < ARRAY_SIZE(ch_data_type); i++) { if (c->cfg.data_type & ch_data_type[i].most_ch_data_type) - return snprintf(buf, PAGE_SIZE, "%s", - ch_data_type[i].name); + return sysfs_emit(buf, "%s", ch_data_type[i].name); } - return snprintf(buf, PAGE_SIZE, "unconfigured\n"); + return sysfs_emit(buf, "unconfigured\n"); } static ssize_t set_subbuffer_size_show(struct device *dev, @@ -306,7 +305,7 @@ static ssize_t set_subbuffer_size_show(struct device *d= ev, { struct most_channel *c =3D to_channel(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", c->cfg.subbuffer_size); + return sysfs_emit(buf, "%d\n", c->cfg.subbuffer_size); } static ssize_t set_packets_per_xact_show(struct device *dev, @@ -315,7 +314,7 @@ static ssize_t set_packets_per_xact_show(struct device = *dev, { struct most_channel *c =3D to_channel(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", c->cfg.packets_per_xact); + return sysfs_emit(buf, "%d\n", c->cfg.packets_per_xact); } static ssize_t set_dbr_size_show(struct device *dev, @@ -323,7 +322,7 @@ static ssize_t set_dbr_size_show(struct device *dev, { struct most_channel *c =3D to_channel(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", c->cfg.dbr_size); + return sysfs_emit(buf, "%d\n", c->cfg.dbr_size); } #define to_dev_attr(a) container_of(a, struct device_attribute, attr) @@ -395,7 +394,7 @@ static ssize_t description_show(struct device *dev, { struct most_interface *iface =3D dev_get_drvdata(dev); - return snprintf(buf, PAGE_SIZE, "%s\n", iface->description); + return sysfs_emit(buf, "%s\n", iface->description); } static ssize_t interface_show(struct device *dev, @@ -406,25 +405,25 @@ static ssize_t interface_show(struct device *dev, switch (iface->interface) { case ITYPE_LOOPBACK: - return snprintf(buf, PAGE_SIZE, "loopback\n"); + return sysfs_emit(buf, "loopback\n"); case ITYPE_I2C: - return snprintf(buf, PAGE_SIZE, "i2c\n"); + return sysfs_emit(buf, "i2c\n"); case ITYPE_I2S: - return snprintf(buf, PAGE_SIZE, "i2s\n"); + return sysfs_emit(buf, "i2s\n"); case ITYPE_TSI: - return snprintf(buf, PAGE_SIZE, "tsi\n"); + return sysfs_emit(buf, "tsi\n"); case ITYPE_HBI: - return snprintf(buf, PAGE_SIZE, "hbi\n"); + return sysfs_emit(buf, "hbi\n"); case ITYPE_MEDIALB_DIM: - return snprintf(buf, PAGE_SIZE, "mlb_dim\n"); + return sysfs_emit(buf, "mlb_dim\n"); case ITYPE_MEDIALB_DIM2: - return snprintf(buf, PAGE_SIZE, "mlb_dim2\n"); + return sysfs_emit(buf, "mlb_dim2\n"); case ITYPE_USB: - return snprintf(buf, PAGE_SIZE, "usb\n"); + return sysfs_emit(buf, "usb\n"); case ITYPE_PCIE: - return snprintf(buf, PAGE_SIZE, "pcie\n"); + return sysfs_emit(buf, "pcie\n"); } - return snprintf(buf, PAGE_SIZE, "unknown\n"); + return sysfs_emit(buf, "unknown\n"); } static DEVICE_ATTR_RO(description); -- 2.34.1