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Message-Id: <20240422062915.3393480-1-jiangyunshui@kylinos.cn>
Date: Mon, 22 Apr 2024 14:29:15 +0800
From: yunshui <jiangyunshui@...inos.cn>
To: linux-kernel@...r.kernel.org,
platform-driver-x86@...r.kernel.org
Cc: corentin.chary@...il.com,
luke@...nes.dev,
ilpo.jarvinen@...ux.intel.com,
hdegoede@...hat.com,
yunshui <jiangyunshui@...inos.cn>,
Ai Chao <aichao@...inos.cn>
Subject: [PATCH v2] platform/x86: asus-laptop: Use sysfs_emit() and sysfs_emit_at() to replace sprintf()
As Documentation/filesystems/sysfs.rst suggested,
show() should only use sysfs_emit() or sysfs_emit_at() when formatting
the value to be returned to user space.
Signed-off-by: yunshui <jiangyunshui@...inos.cn>
Signed-off-by: Ai Chao <aichao@...inos.cn>
---
drivers/platform/x86/asus-laptop.c | 44 +++++++++++++++---------------
1 file changed, 22 insertions(+), 22 deletions(-)
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index 78c42767295a..ccb33d034e2a 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -852,8 +852,8 @@ static ssize_t infos_show(struct device *dev, struct device_attribute *attr,
* so we don't set eof to 1
*/
- len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
- len += sprintf(page + len, "Model reference : %s\n", asus->name);
+ len += sysfs_emit_at(page, len, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
+ len += sysfs_emit_at(page, len, "Model reference : %s\n", asus->name);
/*
* The SFUN method probably allows the original driver to get the list
* of features supported by a given model. For now, 0x0100 or 0x0800
@@ -862,7 +862,7 @@ static ssize_t infos_show(struct device *dev, struct device_attribute *attr,
*/
rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
if (ACPI_SUCCESS(rv))
- len += sprintf(page + len, "SFUN value : %#x\n",
+ len += sysfs_emit_at(page, len, "SFUN value : %#x\n",
(uint) temp);
/*
* The HWRS method return informations about the hardware.
@@ -874,7 +874,7 @@ static ssize_t infos_show(struct device *dev, struct device_attribute *attr,
*/
rv = acpi_evaluate_integer(asus->handle, "HWRS", NULL, &temp);
if (ACPI_SUCCESS(rv))
- len += sprintf(page + len, "HWRS value : %#x\n",
+ len += sysfs_emit_at(page, len, "HWRS value : %#x\n",
(uint) temp);
/*
* Another value for userspace: the ASYM method returns 0x02 for
@@ -885,25 +885,25 @@ static ssize_t infos_show(struct device *dev, struct device_attribute *attr,
*/
rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
if (ACPI_SUCCESS(rv))
- len += sprintf(page + len, "ASYM value : %#x\n",
+ len += sysfs_emit_at(page, len, "ASYM value : %#x\n",
(uint) temp);
if (asus->dsdt_info) {
snprintf(buf, 16, "%d", asus->dsdt_info->length);
- len += sprintf(page + len, "DSDT length : %s\n", buf);
+ len += sysfs_emit_at(page, len, "DSDT length : %s\n", buf);
snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
- len += sprintf(page + len, "DSDT checksum : %s\n", buf);
+ len += sysfs_emit_at(page, len, "DSDT checksum : %s\n", buf);
snprintf(buf, 16, "%d", asus->dsdt_info->revision);
- len += sprintf(page + len, "DSDT revision : %s\n", buf);
+ len += sysfs_emit_at(page, len, "DSDT revision : %s\n", buf);
snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
- len += sprintf(page + len, "OEM id : %s\n", buf);
+ len += sysfs_emit_at(page, len, "OEM id : %s\n", buf);
snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
- len += sprintf(page + len, "OEM table id : %s\n", buf);
+ len += sysfs_emit_at(page, len, "OEM table id : %s\n", buf);
snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
- len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
+ len += sysfs_emit_at(page, len, "OEM revision : 0x%s\n", buf);
snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
- len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
+ len += sysfs_emit_at(page, len, "ASL comp vendor id : %s\n", buf);
snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
- len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
+ len += sysfs_emit_at(page, len, "ASL comp revision : 0x%s\n", buf);
}
return len;
@@ -933,7 +933,7 @@ static ssize_t ledd_show(struct device *dev, struct device_attribute *attr,
{
struct asus_laptop *asus = dev_get_drvdata(dev);
- return sprintf(buf, "0x%08x\n", asus->ledd_status);
+ return sysfs_emit(buf, "0x%08x\n", asus->ledd_status);
}
static ssize_t ledd_store(struct device *dev, struct device_attribute *attr,
@@ -993,7 +993,7 @@ static ssize_t wlan_show(struct device *dev, struct device_attribute *attr,
{
struct asus_laptop *asus = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
+ return sysfs_emit(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
}
static ssize_t wlan_store(struct device *dev, struct device_attribute *attr,
@@ -1022,7 +1022,7 @@ static ssize_t bluetooth_show(struct device *dev, struct device_attribute *attr,
{
struct asus_laptop *asus = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
+ return sysfs_emit(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
}
static ssize_t bluetooth_store(struct device *dev,
@@ -1052,7 +1052,7 @@ static ssize_t wimax_show(struct device *dev, struct device_attribute *attr,
{
struct asus_laptop *asus = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
+ return sysfs_emit(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
}
static ssize_t wimax_store(struct device *dev, struct device_attribute *attr,
@@ -1081,7 +1081,7 @@ static ssize_t wwan_show(struct device *dev, struct device_attribute *attr,
{
struct asus_laptop *asus = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
+ return sysfs_emit(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
}
static ssize_t wwan_store(struct device *dev, struct device_attribute *attr,
@@ -1151,7 +1151,7 @@ static ssize_t ls_switch_show(struct device *dev, struct device_attribute *attr,
{
struct asus_laptop *asus = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", asus->light_switch);
+ return sysfs_emit(buf, "%d\n", asus->light_switch);
}
static ssize_t ls_switch_store(struct device *dev,
@@ -1182,7 +1182,7 @@ static ssize_t ls_level_show(struct device *dev, struct device_attribute *attr,
{
struct asus_laptop *asus = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", asus->light_level);
+ return sysfs_emit(buf, "%d\n", asus->light_level);
}
static ssize_t ls_level_store(struct device *dev, struct device_attribute *attr,
@@ -1228,7 +1228,7 @@ static ssize_t ls_value_show(struct device *dev, struct device_attribute *attr,
if (!err)
err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
if (!err)
- return sprintf(buf, "%d\n", 10 * hi + lo);
+ return sysfs_emit(buf, "%d\n", 10 * hi + lo);
return err;
}
static DEVICE_ATTR_RO(ls_value);
@@ -1264,7 +1264,7 @@ static ssize_t gps_show(struct device *dev, struct device_attribute *attr,
{
struct asus_laptop *asus = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", asus_gps_status(asus));
+ return sysfs_emit(buf, "%d\n", asus_gps_status(asus));
}
static ssize_t gps_store(struct device *dev, struct device_attribute *attr,
--
2.34.1
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