2022-12-25 10:31:00

by Deepak R Varma

Subject: [PATCH] drm/nouveau/hwmon: Use sysfs_emit in show function callsbacks

According to Documentation/filesystems/sysfs.rst, the show() callback
function of kobject attributes should strictly use sysfs_emit() instead
of sprintf() family functions. So, make this change.
Issue identified using the coccinelle device_attr_show.cocci script.

Signed-off-by: Deepak R Varma <[email protected]>
---
drivers/gpu/drm/nouveau/nouveau_hwmon.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_hwmon.c b/drivers/gpu/drm/nouveau/nouveau_hwmon.c
index a7db7c31064b..e844be49e11e 100644
--- a/drivers/gpu/drm/nouveau/nouveau_hwmon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_hwmon.c
@@ -41,7 +41,7 @@ static ssize_t
nouveau_hwmon_show_temp1_auto_point1_pwm(struct device *d,
struct device_attribute *a, char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%d\n", 100);
+ return sysfs_emit(buf, "%d\n", 100);
}
static SENSOR_DEVICE_ATTR(temp1_auto_point1_pwm, 0444,
nouveau_hwmon_show_temp1_auto_point1_pwm, NULL, 0);
@@ -54,8 +54,8 @@ nouveau_hwmon_temp1_auto_point1_temp(struct device *d,
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_therm *therm = nvxx_therm(&drm->client.device);

- return snprintf(buf, PAGE_SIZE, "%d\n",
- therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST) * 1000);
+ return sysfs_emit(buf, "%d\n",
+ therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST) * 1000);
}
static ssize_t
nouveau_hwmon_set_temp1_auto_point1_temp(struct device *d,
@@ -87,8 +87,8 @@ nouveau_hwmon_temp1_auto_point1_temp_hyst(struct device *d,
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_therm *therm = nvxx_therm(&drm->client.device);

- return snprintf(buf, PAGE_SIZE, "%d\n",
- therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST) * 1000);
+ return sysfs_emit(buf, "%d\n",
+ therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST) * 1000);
}
static ssize_t
nouveau_hwmon_set_temp1_auto_point1_temp_hyst(struct device *d,
--
2.34.1

2023-01-07 20:38:25

by Deepak R Varma

Subject: Re: [PATCH] drm/nouveau/hwmon: Use sysfs_emit in show function callsbacks

On Sun, Dec 25, 2022 at 02:32:08PM +0530, Deepak R Varma wrote:
> According to Documentation/filesystems/sysfs.rst, the show() callback
> function of kobject attributes should strictly use sysfs_emit() instead
> of sprintf() family functions. So, make this change.
> Issue identified using the coccinelle device_attr_show.cocci script.
>
> Signed-off-by: Deepak R Varma <[email protected]>
> ---

Hello,
Requesting a review and feedback on this patch proposal.

Thank you,
./drv