linux-kernel - [PATCH V3] media: i2c: ccs: replace snprintf in show functions with sysfs

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Date:   Tue, 19 Oct 2021 19:14:15 -0700
From:   Qing Wang <wangqing@...o.com>
To:     Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Qing Wang <wangqing@...o.com>
Subject: [PATCH V3] media: i2c: ccs: replace snprintf in show functions with sysfs_emit

show() should not use snprintf() when formatting the value to be
returned to user space.

Fix the following coccicheck warning:
drivers/media/i2c/ccs/ccs-core.c:3761: WARNING: use scnprintf or sprintf.

V3:
- Fix some formatting problems.

Signed-off-by: Qing Wang <wangqing@...o.com>
---
 drivers/media/i2c/ccs/ccs-core.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c
index 5363f3b..9158d3c
--- a/drivers/media/i2c/ccs/ccs-core.c
+++ b/drivers/media/i2c/ccs/ccs-core.c
@@ -2758,13 +2758,13 @@ ident_show(struct device *dev, struct device_attribute *attr, char *buf)
 	struct ccs_module_info *minfo = &sensor->minfo;
 
 	if (minfo->mipi_manufacturer_id)
-		return snprintf(buf, PAGE_SIZE, "%4.4x%4.4x%2.2x\n",
-				minfo->mipi_manufacturer_id, minfo->model_id,
-				minfo->revision_number) + 1;
+		return sysfs_emit(buf, "%4.4x%4.4x%2.2x\n",
+				  minfo->mipi_manufacturer_id, minfo->model_id,
+				  minfo->revision_number) + 1;
 	else
-		return snprintf(buf, PAGE_SIZE, "%2.2x%4.4x%2.2x\n",
-				minfo->smia_manufacturer_id, minfo->model_id,
-				minfo->revision_number) + 1;
+		return sysfs_emit(buf, "%2.2x%4.4x%2.2x\n",
+				  minfo->smia_manufacturer_id, minfo->model_id,
+				  minfo->revision_number) + 1;
 }
 static DEVICE_ATTR_RO(ident);
 
-- 
2.7.4