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Message-Id: <20230322144005.40368-5-andriy.shevchenko@linux.intel.com>
Date: Wed, 22 Mar 2023 16:39:55 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Bumwoo Lee <bw365.lee@...sung.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
linux-kernel@...r.kernel.org
Cc: MyungJoo Ham <myungjoo.ham@...sung.com>,
Chanwoo Choi <cw00.choi@...sung.com>
Subject: [PATCH v1 04/14] extcon: use sysfs_emit() to instead of sprintf()
Follow the advice of the Documentation/filesystems/sysfs.rst that
show() should only use sysfs_emit() or sysfs_emit_at() when formatting
the value to be returned to user space.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
drivers/extcon/extcon.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index 70e9755ba2bc..ac84f4aafc69 100644
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -370,12 +370,12 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr,
struct extcon_dev *edev = dev_get_drvdata(dev);
if (edev->max_supported == 0)
- return sprintf(buf, "%u\n", edev->state);
+ return sysfs_emit(buf, "%u\n", edev->state);
for (i = 0; i < edev->max_supported; i++) {
- count += sprintf(buf + count, "%s=%d\n",
- extcon_info[edev->supported_cable[i]].name,
- !!(edev->state & BIT(i)));
+ count += sysfs_emit_at(buf, count, "%s=%d\n",
+ extcon_info[edev->supported_cable[i]].name,
+ !!(edev->state & BIT(i)));
}
return count;
@@ -387,7 +387,7 @@ static ssize_t name_show(struct device *dev, struct device_attribute *attr,
{
struct extcon_dev *edev = dev_get_drvdata(dev);
- return sprintf(buf, "%s\n", edev->name);
+ return sysfs_emit(buf, "%s\n", edev->name);
}
static DEVICE_ATTR_RO(name);
@@ -398,8 +398,8 @@ static ssize_t cable_name_show(struct device *dev,
attr_name);
int i = cable->cable_index;
- return sprintf(buf, "%s\n",
- extcon_info[cable->edev->supported_cable[i]].name);
+ return sysfs_emit(buf, "%s\n",
+ extcon_info[cable->edev->supported_cable[i]].name);
}
static ssize_t cable_state_show(struct device *dev,
@@ -410,8 +410,8 @@ static ssize_t cable_state_show(struct device *dev,
int i = cable->cable_index;
- return sprintf(buf, "%d\n",
- extcon_get_state(cable->edev, cable->edev->supported_cable[i]));
+ return sysfs_emit(buf, "%d\n",
+ extcon_get_state(cable->edev, cable->edev->supported_cable[i]));
}
/**
--
2.40.0.1.gaa8946217a0b
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