From: yunshui <jiangyunshui@kylinos.cn>
To: linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org
Cc: hdegoede@redhat.com, yunshui <jiangyunshui@kylinos.cn>,
Ai Chao <aichao@kylinos.cn>
Subject: [PATCH v2] platform/x86: samsung-laptop: Use sysfs_emit() to replace the old interface sprintf()
Date: Fri, 19 Apr 2024 14:41:06 +0800 [thread overview]
Message-ID: <20240419064106.2396705-1-jiangyunshui@kylinos.cn> (raw)
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@kylinos.cn>
Reviewed-by: Ai Chao <aichao@kylinos.cn>
---
drivers/platform/x86/samsung-laptop.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c
index b4aa8ba35d2d..3d2f8e758369 100644
--- a/drivers/platform/x86/samsung-laptop.c
+++ b/drivers/platform/x86/samsung-laptop.c
@@ -661,9 +661,9 @@ static ssize_t get_performance_level(struct device *dev,
/* The logic is backwards, yeah, lots of fun... */
for (i = 0; config->performance_levels[i].name; ++i) {
if (sretval.data[0] == config->performance_levels[i].value)
- return sprintf(buf, "%s\n", config->performance_levels[i].name);
+ return sysfs_emit(buf, "%s\n", config->performance_levels[i].name);
}
- return sprintf(buf, "%s\n", "unknown");
+ return sysfs_emit(buf, "%s\n", "unknown");
}
static ssize_t set_performance_level(struct device *dev,
@@ -744,7 +744,7 @@ static ssize_t get_battery_life_extender(struct device *dev,
if (ret < 0)
return ret;
- return sprintf(buf, "%d\n", ret);
+ return sysfs_emit(buf, "%d\n", ret);
}
static ssize_t set_battery_life_extender(struct device *dev,
@@ -813,7 +813,7 @@ static ssize_t get_usb_charge(struct device *dev,
if (ret < 0)
return ret;
- return sprintf(buf, "%d\n", ret);
+ return sysfs_emit(buf, "%d\n", ret);
}
static ssize_t set_usb_charge(struct device *dev,
@@ -878,7 +878,7 @@ static ssize_t get_lid_handling(struct device *dev,
if (ret < 0)
return ret;
- return sprintf(buf, "%d\n", ret);
+ return sysfs_emit(buf, "%d\n", ret);
}
static ssize_t set_lid_handling(struct device *dev,
--
2.34.1
next reply other threads:[~2024-04-19 6:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-19 6:41 yunshui [this message]
2024-04-22 13:42 ` [PATCH v2] platform/x86: samsung-laptop: Use sysfs_emit() to replace the old interface sprintf() Hans de Goede
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