linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* [PATCH 2/3] HID: roccat: Convert snprintf() to sysfs_emit()
@ 2022-10-08 19:15 Jules Irenge
  0 siblings, 0 replies; only message in thread
From: Jules Irenge @ 2022-10-08 19:15 UTC (permalink / raw)
  To: erazor_de; +Cc: jikos, benjamin.tissoires, linux-input, linux-kernel

Coccinnelle reports a warning
Warning: Use scnprintf or sprintf

Following the advice on kernel documentation
https://www.kernel.org/doc/html/latest/filesystems/sysfs.html

For show(device *...) functions we should only use sysfs_emit() or sysfs_emit_at()
especially when formatting the value to be returned to user space.

Convert snprintf() to sysfs_emit()

Signed-off-by: Jules Irenge <jules.irenge@postgrad.manchester.ac.uk>
---
 drivers/hid/hid-roccat-kovaplus.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/hid/hid-roccat-kovaplus.c b/drivers/hid/hid-roccat-kovaplus.c
index 6fb9b9563769..7f6238a19739 100644
--- a/drivers/hid/hid-roccat-kovaplus.c
+++ b/drivers/hid/hid-roccat-kovaplus.c
@@ -274,7 +274,7 @@ static ssize_t kovaplus_sysfs_show_actual_profile(struct device *dev,
 {
 	struct kovaplus_device *kovaplus =
 			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
-	return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_profile);
+	return sysfs_emit(buf, "%d\n", kovaplus->actual_profile);
 }
 
 static ssize_t kovaplus_sysfs_set_actual_profile(struct device *dev,
@@ -327,7 +327,7 @@ static ssize_t kovaplus_sysfs_show_actual_cpi(struct device *dev,
 {
 	struct kovaplus_device *kovaplus =
 			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
-	return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_cpi);
+	return sysfs_emit(buf, "%d\n", kovaplus->actual_cpi);
 }
 static DEVICE_ATTR(actual_cpi, 0440, kovaplus_sysfs_show_actual_cpi, NULL);
 
@@ -336,7 +336,7 @@ static ssize_t kovaplus_sysfs_show_actual_sensitivity_x(struct device *dev,
 {
 	struct kovaplus_device *kovaplus =
 			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
-	return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_x_sensitivity);
+	return sysfs_emit(buf, "%d\n", kovaplus->actual_x_sensitivity);
 }
 static DEVICE_ATTR(actual_sensitivity_x, 0440,
 		   kovaplus_sysfs_show_actual_sensitivity_x, NULL);
@@ -346,7 +346,7 @@ static ssize_t kovaplus_sysfs_show_actual_sensitivity_y(struct device *dev,
 {
 	struct kovaplus_device *kovaplus =
 			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
-	return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_y_sensitivity);
+	return sysfs_emit(buf, "%d\n", kovaplus->actual_y_sensitivity);
 }
 static DEVICE_ATTR(actual_sensitivity_y, 0440,
 		   kovaplus_sysfs_show_actual_sensitivity_y, NULL);
@@ -367,7 +367,7 @@ static ssize_t kovaplus_sysfs_show_firmware_version(struct device *dev,
 			&info, KOVAPLUS_SIZE_INFO);
 	mutex_unlock(&kovaplus->kovaplus_lock);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
+	return sysfs_emit(buf, "%d\n", info.firmware_version);
 }
 static DEVICE_ATTR(firmware_version, 0440,
 		   kovaplus_sysfs_show_firmware_version, NULL);
-- 
2.37.3


^ permalink raw reply related	[flat|nested] only message in thread

only message in thread, other threads:[~2022-10-08 19:15 UTC | newest]

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-10-08 19:15 [PATCH 2/3] HID: roccat: Convert snprintf() to sysfs_emit() Jules Irenge

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).