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Tue, 19 Mar 2024 14:45:39 +0900 (JST) Received: from edo.cn.fujitsu.com (edo.cn.fujitsu.com [10.167.33.5]) by kws-ab4.gw.nic.fujitsu.com (Postfix) with ESMTP id EF37D2235E1; Tue, 19 Mar 2024 14:45:38 +0900 (JST) Received: from localhost.localdomain (unknown [10.167.226.45]) by edo.cn.fujitsu.com (Postfix) with ESMTP id 38E1A1A006D; Tue, 19 Mar 2024 13:45:38 +0800 (CST) From: Li Zhijian To: linux-kernel@vger.kernel.org Cc: Li Zhijian , Jiri Kosina , Jonathan Cameron , Srinivas Pandruvada , Benjamin Tissoires , linux-input@vger.kernel.org, linux-iio@vger.kernel.org, Jonathan Cameron Subject: [PATCH v4 2/4] HID: hid-sensor-custom: Convert sprintf() family to sysfs_emit() family Date: Tue, 19 Mar 2024 13:45:25 +0800 Message-Id: <20240319054527.1581299-2-lizhijian@fujitsu.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20240319054527.1581299-1-lizhijian@fujitsu.com> References: <20240319054527.1581299-1-lizhijian@fujitsu.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-TM-AS-Product-Ver: IMSS-9.1.0.1417-9.0.0.1002-28260.005 X-TM-AS-User-Approved-Sender: Yes X-TMASE-Version: IMSS-9.1.0.1417-9.0.1002-28260.005 X-TMASE-Result: 10--5.660400-10.000000 X-TMASE-MatchedRID: BNZKu07XGZ9zKOD0ULzeCR1kSRHxj+Z5w77CRCdy4LzXFJ7W3lIp4x2r rGe8rZbLPsj5qjS+dCHKSyLhniwKzf+tuWXZk8lIEVuC0eNRYvJxXefgn/TNQ2O0yVK/5LmccxZ +avxQRTyEkt/L8HtAJ785xNkZcrN2ePWEUnWb98FBDn6Fjq77jvioIsi7Sa0gwLkNMQzGl5B+Kr WCPbERPznpYPqS6jzxEi2pD9yuITrh15/JKUJo/p4CIKY/Hg3AGdQnQSTrKGPEQdG7H66TyH4gK q42LRYkBr/OIWYnO5hWUxEG9fqrIWdrYeVp6egUSuBokyF9P6R+3BndfXUhXQ== X-TMASE-SNAP-Result: 1.821001.0001-0-1-22:0,33:0,34:0-0 Per filesystems/sysfs.rst, show() should only use sysfs_emit() or sysfs_emit_at() when formatting the value to be returned to user space. coccinelle complains that there are still a couple of functions that use snprintf(). Convert them to sysfs_emit(). sprintf() and scnprintf() will be converted as well if they have. Generally, this patch is generated by make coccicheck M= MODE=patch \ COCCI=scripts/coccinelle/api/device_attr_show.cocci No functional change intended CC: Jiri Kosina CC: Jonathan Cameron CC: Srinivas Pandruvada CC: Benjamin Tissoires CC: linux-input@vger.kernel.org CC: linux-iio@vger.kernel.org Reviewed-by: Jonathan Cameron Signed-off-by: Li Zhijian --- V3: rewrap the line as will be under 80 chars and add Reviewed-by # Jonathan This is a part of the work "Fix coccicheck device_attr_show warnings"[1] Split them per subsystem so that the maintainer can review it easily [1] https://lore.kernel.org/lkml/20240116041129.3937800-1-lizhijian@fujitsu.com/ --- drivers/hid/hid-sensor-custom.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/hid/hid-sensor-custom.c b/drivers/hid/hid-sensor-custom.c index d85398721659..ac214777d7d9 100644 --- a/drivers/hid/hid-sensor-custom.c +++ b/drivers/hid/hid-sensor-custom.c @@ -155,7 +155,7 @@ static ssize_t enable_sensor_show(struct device *dev, { struct hid_sensor_custom *sensor_inst = dev_get_drvdata(dev); - return sprintf(buf, "%d\n", sensor_inst->enable); + return sysfs_emit(buf, "%d\n", sensor_inst->enable); } static int set_power_report_state(struct hid_sensor_custom *sensor_inst, @@ -372,14 +372,13 @@ static ssize_t show_value(struct device *dev, struct device_attribute *attr, sizeof(struct hid_custom_usage_desc), usage_id_cmp); if (usage_desc) - return snprintf(buf, PAGE_SIZE, "%s\n", - usage_desc->desc); + return sysfs_emit(buf, "%s\n", usage_desc->desc); else - return sprintf(buf, "not-specified\n"); + return sysfs_emit(buf, "not-specified\n"); } else return -EINVAL; - return sprintf(buf, "%d\n", value); + return sysfs_emit(buf, "%d\n", value); } static ssize_t store_value(struct device *dev, struct device_attribute *attr,