* [PATCH v2] platform/x86: classmate-laptop: use sysfs_emit() instead of sprintf()
@ 2024-10-23 1:42 chen zhang
2024-10-23 12:39 ` Ilpo Järvinen
0 siblings, 1 reply; 2+ messages in thread
From: chen zhang @ 2024-10-23 1:42 UTC (permalink / raw)
To: hdegoede, ilpo.jarvinen, cascardo
Cc: platform-driver-x86, linux-kernel, chenzhang_0901, chen zhang
Follow the advice in Documentation/filesystems/sysfs.rst:
show() should only use sysfs_emit() or sysfs_emit_at() when formatting
the value to be returned to user space.
Signed-off-by: chen zhang <chenzhang@kylinos.cn>
---
v2: add #include <linux/sysfs.h>
---
drivers/platform/x86/classmate-laptop.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/platform/x86/classmate-laptop.c b/drivers/platform/x86/classmate-laptop.c
index cb6fce655e35..6b1b8e444e24 100644
--- a/drivers/platform/x86/classmate-laptop.c
+++ b/drivers/platform/x86/classmate-laptop.c
@@ -12,6 +12,7 @@
#include <linux/backlight.h>
#include <linux/input.h>
#include <linux/rfkill.h>
+#include <linux/sysfs.h>
struct cmpc_accel {
int sensitivity;
@@ -208,7 +209,7 @@ static ssize_t cmpc_accel_sensitivity_show_v4(struct device *dev,
inputdev = dev_get_drvdata(&acpi->dev);
accel = dev_get_drvdata(&inputdev->dev);
- return sprintf(buf, "%d\n", accel->sensitivity);
+ return sysfs_emit(buf, "%d\n", accel->sensitivity);
}
static ssize_t cmpc_accel_sensitivity_store_v4(struct device *dev,
@@ -257,7 +258,7 @@ static ssize_t cmpc_accel_g_select_show_v4(struct device *dev,
inputdev = dev_get_drvdata(&acpi->dev);
accel = dev_get_drvdata(&inputdev->dev);
- return sprintf(buf, "%d\n", accel->g_select);
+ return sysfs_emit(buf, "%d\n", accel->g_select);
}
static ssize_t cmpc_accel_g_select_store_v4(struct device *dev,
@@ -550,7 +551,7 @@ static ssize_t cmpc_accel_sensitivity_show(struct device *dev,
inputdev = dev_get_drvdata(&acpi->dev);
accel = dev_get_drvdata(&inputdev->dev);
- return sprintf(buf, "%d\n", accel->sensitivity);
+ return sysfs_emit(buf, "%d\n", accel->sensitivity);
}
static ssize_t cmpc_accel_sensitivity_store(struct device *dev,
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2] platform/x86: classmate-laptop: use sysfs_emit() instead of sprintf()
2024-10-23 1:42 [PATCH v2] platform/x86: classmate-laptop: use sysfs_emit() instead of sprintf() chen zhang
@ 2024-10-23 12:39 ` Ilpo Järvinen
0 siblings, 0 replies; 2+ messages in thread
From: Ilpo Järvinen @ 2024-10-23 12:39 UTC (permalink / raw)
To: chen zhang
Cc: Hans de Goede, cascardo, platform-driver-x86, LKML,
chenzhang_0901
On Wed, 23 Oct 2024, chen zhang wrote:
> Follow the advice in Documentation/filesystems/sysfs.rst:
> show() should only use sysfs_emit() or sysfs_emit_at() when formatting
> the value to be returned to user space.
>
> Signed-off-by: chen zhang <chenzhang@kylinos.cn>
> ---
> v2: add #include <linux/sysfs.h>
> ---
> drivers/platform/x86/classmate-laptop.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/platform/x86/classmate-laptop.c b/drivers/platform/x86/classmate-laptop.c
> index cb6fce655e35..6b1b8e444e24 100644
> --- a/drivers/platform/x86/classmate-laptop.c
> +++ b/drivers/platform/x86/classmate-laptop.c
> @@ -12,6 +12,7 @@
> #include <linux/backlight.h>
> #include <linux/input.h>
> #include <linux/rfkill.h>
> +#include <linux/sysfs.h>
>
> struct cmpc_accel {
> int sensitivity;
> @@ -208,7 +209,7 @@ static ssize_t cmpc_accel_sensitivity_show_v4(struct device *dev,
> inputdev = dev_get_drvdata(&acpi->dev);
> accel = dev_get_drvdata(&inputdev->dev);
>
> - return sprintf(buf, "%d\n", accel->sensitivity);
> + return sysfs_emit(buf, "%d\n", accel->sensitivity);
> }
>
> static ssize_t cmpc_accel_sensitivity_store_v4(struct device *dev,
> @@ -257,7 +258,7 @@ static ssize_t cmpc_accel_g_select_show_v4(struct device *dev,
> inputdev = dev_get_drvdata(&acpi->dev);
> accel = dev_get_drvdata(&inputdev->dev);
>
> - return sprintf(buf, "%d\n", accel->g_select);
> + return sysfs_emit(buf, "%d\n", accel->g_select);
> }
>
> static ssize_t cmpc_accel_g_select_store_v4(struct device *dev,
> @@ -550,7 +551,7 @@ static ssize_t cmpc_accel_sensitivity_show(struct device *dev,
> inputdev = dev_get_drvdata(&acpi->dev);
> accel = dev_get_drvdata(&inputdev->dev);
>
> - return sprintf(buf, "%d\n", accel->sensitivity);
> + return sysfs_emit(buf, "%d\n", accel->sensitivity);
> }
>
> static ssize_t cmpc_accel_sensitivity_store(struct device *dev,
>
Hi,
Thank you for your patch, however, a similar patch (from somebody else)
has been already applied so I dropped this one.
--
i.
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