linux-kernel - [PATCH 3/4] Input: stmfts - use sysfs

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Message-Id: <20251215-fts-fixes-v1-3-8c1e3a63ebf1@ixit.cz>
Date: Mon, 15 Dec 2025 15:30:03 +0100
From: David Heidelberg via B4 Relay <devnull+david.ixit.cz@...nel.org>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Petr Hodina <petr.hodina@...tonmail.com>, 
 Javier Martinez Canillas <javier@....samsung.com>, 
 Rob Herring <robh@...nel.org>, Andi Shyti <andi@...zian.org>
Cc: linux-input@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 David Heidelberg <david@...t.cz>
Subject: [PATCH 3/4] Input: stmfts - use sysfs_emit() instead of sprintf()

From: Petr Hodina <petr.hodina@...tonmail.com>

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: Petr Hodina <petr.hodina@...tonmail.com>
Signed-off-by: David Heidelberg <david@...t.cz>
---
 drivers/input/touchscreen/stmfts.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/input/touchscreen/stmfts.c b/drivers/input/touchscreen/stmfts.c
index ad363b3c344cd..4b166b0a9a5a6 100644
--- a/drivers/input/touchscreen/stmfts.c
+++ b/drivers/input/touchscreen/stmfts.c
@@ -410,7 +410,7 @@ static ssize_t stmfts_sysfs_chip_id(struct device *dev,
 {
 	struct stmfts_data *sdata = dev_get_drvdata(dev);
 
-	return sprintf(buf, "%#x\n", sdata->chip_id);
+	return sysfs_emit(buf, "%#x\n", sdata->chip_id);
 }
 
 static ssize_t stmfts_sysfs_chip_version(struct device *dev,
@@ -418,7 +418,7 @@ static ssize_t stmfts_sysfs_chip_version(struct device *dev,
 {
 	struct stmfts_data *sdata = dev_get_drvdata(dev);
 
-	return sprintf(buf, "%u\n", sdata->chip_ver);
+	return sysfs_emit(buf, "%u\n", sdata->chip_ver);
 }
 
 static ssize_t stmfts_sysfs_fw_ver(struct device *dev,
@@ -426,7 +426,7 @@ static ssize_t stmfts_sysfs_fw_ver(struct device *dev,
 {
 	struct stmfts_data *sdata = dev_get_drvdata(dev);
 
-	return sprintf(buf, "%u\n", sdata->fw_ver);
+	return sysfs_emit(buf, "%u\n", sdata->fw_ver);
 }
 
 static ssize_t stmfts_sysfs_config_id(struct device *dev,
@@ -434,7 +434,7 @@ static ssize_t stmfts_sysfs_config_id(struct device *dev,
 {
 	struct stmfts_data *sdata = dev_get_drvdata(dev);
 
-	return sprintf(buf, "%#x\n", sdata->config_id);
+	return sysfs_emit(buf, "%#x\n", sdata->config_id);
 }
 
 static ssize_t stmfts_sysfs_config_version(struct device *dev,
@@ -442,7 +442,7 @@ static ssize_t stmfts_sysfs_config_version(struct device *dev,
 {
 	struct stmfts_data *sdata = dev_get_drvdata(dev);
 
-	return sprintf(buf, "%u\n", sdata->config_ver);
+	return sysfs_emit(buf, "%u\n", sdata->config_ver);
 }
 
 static ssize_t stmfts_sysfs_read_status(struct device *dev,
@@ -457,7 +457,7 @@ static ssize_t stmfts_sysfs_read_status(struct device *dev,
 	if (err)
 		return err;
 
-	return sprintf(buf, "%#02x\n", status[0]);
+	return sysfs_emit(buf, "%#02x\n", status[0]);
 }
 
 static ssize_t stmfts_sysfs_hover_enable_read(struct device *dev,
@@ -465,7 +465,7 @@ static ssize_t stmfts_sysfs_hover_enable_read(struct device *dev,
 {
 	struct stmfts_data *sdata = dev_get_drvdata(dev);
 
-	return sprintf(buf, "%u\n", sdata->hover_enabled);
+	return sysfs_emit(buf, "%u\n", sdata->hover_enabled);
 }
 
 static ssize_t stmfts_sysfs_hover_enable_write(struct device *dev,

-- 
2.51.0