linux-kernel - [PATCH 01/42] coccinelle: device_attr_show.cocci: update description and warning message

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Date: Tue, 16 Jan 2024 12:10:48 +0800
From: Li Zhijian <lizhijian@...itsu.com>
To: linux-kernel@...r.kernel.org
Cc: Li Zhijian <lizhijian@...itsu.com>,
	Julia Lawall <Julia.Lawall@...ia.fr>,
	Nicolas Palix <nicolas.palix@...g.fr>,
	cocci@...ia.fr
Subject: [PATCH 01/42] coccinelle: device_attr_show.cocci: update description and warning message

Update them according to latest Documentation/filesystems/sysfs.rst.

CC: Julia Lawall <Julia.Lawall@...ia.fr>
CC: Nicolas Palix <nicolas.palix@...g.fr>
CC: cocci@...ia.fr
Signed-off-by: Li Zhijian <lizhijian@...itsu.com>
---
 scripts/coccinelle/api/device_attr_show.cocci | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/scripts/coccinelle/api/device_attr_show.cocci b/scripts/coccinelle/api/device_attr_show.cocci
index a28dc061653a..a621e9610479 100644
--- a/scripts/coccinelle/api/device_attr_show.cocci
+++ b/scripts/coccinelle/api/device_attr_show.cocci
@@ -1,10 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0-only
 ///
 /// From Documentation/filesystems/sysfs.rst:
-///  show() must not use snprintf() when formatting the value to be
-///  returned to user space. If you can guarantee that an overflow
-///  will never happen you can use sprintf() otherwise you must use
-///  scnprintf().
+/// show() should only use sysfs_emit() or sysfs_emit_at() when formatting
+/// the value to be returned to user space.
 ///
 // Confidence: High
 // Copyright: (C) 2020 Denis Efremov ISPRAS
@@ -46,10 +44,10 @@ ssize_t show(struct device *dev, struct device_attribute *attr, char *buf)
 p << r.p;
 @@
 
-coccilib.report.print_report(p[0], "WARNING: use scnprintf or sprintf")
+coccilib.report.print_report(p[0], "WARNING: please use sysfs_emit")
 
 @script: python depends on org@
 p << r.p;
 @@
 
-coccilib.org.print_todo(p[0], "WARNING: use scnprintf or sprintf")
+coccilib.org.print_todo(p[0], "WARNING: please use sysfs_emit")
-- 
2.29.2