linux-kernel - [PATCH 07/42] drivers/edac: Convert snprintf to sysfs

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Date: Tue, 16 Jan 2024 12:51:16 +0800
From: Li Zhijian <lizhijian@...itsu.com>
To: linux-kernel@...r.kernel.org
Cc: Li Zhijian <lizhijian@...itsu.com>,
	Borislav Petkov <bp@...en8.de>,
	Tony Luck <tony.luck@...el.com>,
	James Morse <james.morse@....com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Robert Richter <rric@...nel.org>,
	linux-edac@...r.kernel.org
Subject: [PATCH 07/42] drivers/edac: Convert snprintf to sysfs_emit

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().

> ./drivers/edac/edac_mc_sysfs.c:210:8-16: WARNING: please use sysfs_emit
> ./drivers/edac/edac_mc_sysfs.c:518:8-16: WARNING: please use sysfs_emit

No functional change intended

CC: Borislav Petkov <bp@...en8.de>
CC: Tony Luck <tony.luck@...el.com>
CC: James Morse <james.morse@....com>
CC: Mauro Carvalho Chehab <mchehab@...nel.org>
CC: Robert Richter <rric@...nel.org>
CC: linux-edac@...r.kernel.org
Signed-off-by: Li Zhijian <lizhijian@...itsu.com>
---
 drivers/edac/edac_mc_sysfs.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 5116873c3330..6ee5030c7207 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -207,8 +207,7 @@ static ssize_t channel_dimm_label_show(struct device *dev,
 	if (!rank->dimm->label[0])
 		return 0;
 
-	return snprintf(data, sizeof(rank->dimm->label) + 1, "%s\n",
-			rank->dimm->label);
+	return sysfs_emit(data, "%s\n", rank->dimm->label);
 }
 
 static ssize_t channel_dimm_label_store(struct device *dev,
@@ -515,7 +514,7 @@ static ssize_t dimmdev_label_show(struct device *dev,
 	if (!dimm->label[0])
 		return 0;
 
-	return snprintf(data, sizeof(dimm->label) + 1, "%s\n", dimm->label);
+	return sysfs_emit(data, "%s\n", dimm->label);
 }
 
 static ssize_t dimmdev_label_store(struct device *dev,
-- 
2.29.2