From 33ce79be2784bb7c327ef0f3be184936238c91d3 Mon Sep 17 00:00:00 2001
From: Ye Guojin <ye.guojin@zte.com.cn>
Date: Mon, 18 Oct 2021 09:17:50 +0000
Subject: [PATCH] platform/x86: thinkpad_acpi: Fix coccinelle warnings
Git-commit: 33ce79be2784bb7c327ef0f3be184936238c91d3
Patch-mainline: v5.16-rc1
References: bsc#1210050

coccicheck complains about the use of snprintf() in sysfs show
Functions: 

WARNING  use scnprintf or sprintf

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Ye Guojin <ye.guojin@zte.com.cn>
Link: https://lore.kernel.org/r/20211018091750.858826-1-ye.guojin@zte.com.cn
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/platform/x86/thinkpad_acpi.c | 54 ++++++++++++++--------------
 1 file changed, 27 insertions(+), 27 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 07b9710d500e..cd5c3a04dba3 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -1275,7 +1275,7 @@ static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
 			return status;
 	}
 
-	return snprintf(buf, PAGE_SIZE, "%d\n",
+	return sysfs_emit(buf, "%d\n",
 			(status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
 }
 
@@ -1368,14 +1368,14 @@ static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
 /* interface_version --------------------------------------------------- */
 static ssize_t interface_version_show(struct device_driver *drv, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
+	return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION);
 }
 static DRIVER_ATTR_RO(interface_version);
 
 /* debug_level --------------------------------------------------------- */
 static ssize_t debug_level_show(struct device_driver *drv, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
+	return sysfs_emit(buf, "0x%04x\n", dbg_level);
 }
 
 static ssize_t debug_level_store(struct device_driver *drv, const char *buf,
@@ -1395,7 +1395,7 @@ static DRIVER_ATTR_RW(debug_level);
 /* version ------------------------------------------------------------- */
 static ssize_t version_show(struct device_driver *drv, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%s v%s\n",
+	return sysfs_emit(buf, "%s v%s\n",
 			TPACPI_DESC, TPACPI_VERSION);
 }
 static DRIVER_ATTR_RO(version);
@@ -1407,7 +1407,7 @@ static DRIVER_ATTR_RO(version);
 /* wlsw_emulstate ------------------------------------------------------ */
 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
+	return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate);
 }
 
 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf,
@@ -1430,7 +1430,7 @@ static DRIVER_ATTR_RW(wlsw_emulstate);
 /* bluetooth_emulstate ------------------------------------------------- */
 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
+	return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate);
 }
 
 static ssize_t bluetooth_emulstate_store(struct device_driver *drv,
@@ -1450,7 +1450,7 @@ static DRIVER_ATTR_RW(bluetooth_emulstate);
 /* wwan_emulstate ------------------------------------------------- */
 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
+	return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate);
 }
 
 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf,
@@ -1470,7 +1470,7 @@ static DRIVER_ATTR_RW(wwan_emulstate);
 /* uwb_emulstate ------------------------------------------------- */
 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
+	return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate);
 }
 
 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf,
@@ -2678,7 +2678,7 @@ static ssize_t hotkey_enable_show(struct device *dev,
 	if (res)
 		return res;
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", status);
+	return sysfs_emit(buf, "%d\n", status);
 }
 
 static ssize_t hotkey_enable_store(struct device *dev,
@@ -2706,7 +2706,7 @@ static ssize_t hotkey_mask_show(struct device *dev,
 			   struct device_attribute *attr,
 			   char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
+	return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask);
 }
 
 static ssize_t hotkey_mask_store(struct device *dev,
@@ -2754,7 +2754,7 @@ static ssize_t hotkey_bios_mask_show(struct device *dev,
 {
 	printk_deprecated_attribute("hotkey_bios_mask",
 			"This attribute is useless.");
-	return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
+	return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask);
 }
 
 static DEVICE_ATTR_RO(hotkey_bios_mask);
@@ -2764,7 +2764,7 @@ static ssize_t hotkey_all_mask_show(struct device *dev,
 			   struct device_attribute *attr,
 			   char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "0x%08x\n",
+	return sysfs_emit(buf, "0x%08x\n",
 				hotkey_all_mask | hotkey_source_mask);
 }
 
@@ -2775,7 +2775,7 @@ static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
 			   struct device_attribute *attr,
 			   char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "0x%08x\n",
+	return sysfs_emit(buf, "0x%08x\n",
 			hotkey_adaptive_all_mask | hotkey_source_mask);
 }
 
@@ -2786,7 +2786,7 @@ static ssize_t hotkey_recommended_mask_show(struct device *dev,
 					    struct device_attribute *attr,
 					    char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "0x%08x\n",
+	return sysfs_emit(buf, "0x%08x\n",
 			(hotkey_all_mask | hotkey_source_mask)
 			& ~hotkey_reserved_mask);
 }
@@ -2800,7 +2800,7 @@ static ssize_t hotkey_source_mask_show(struct device *dev,
 			   struct device_attribute *attr,
 			   char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
+	return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask);
 }
 
 static ssize_t hotkey_source_mask_store(struct device *dev,
@@ -2851,7 +2851,7 @@ static ssize_t hotkey_poll_freq_show(struct device *dev,
 			   struct device_attribute *attr,
 			   char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
+	return sysfs_emit(buf, "%d\n", hotkey_poll_freq);
 }
 
 static ssize_t hotkey_poll_freq_store(struct device *dev,
@@ -2893,7 +2893,7 @@ static ssize_t hotkey_radio_sw_show(struct device *dev,
 	/* Opportunistic update */
 	tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
 
-	return snprintf(buf, PAGE_SIZE, "%d\n",
+	return sysfs_emit(buf, "%d\n",
 			(res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
 }
 
@@ -2916,7 +2916,7 @@ static ssize_t hotkey_tablet_mode_show(struct device *dev,
 	if (res < 0)
 		return res;
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
+	return sysfs_emit(buf, "%d\n", !!s);
 }
 
 static DEVICE_ATTR_RO(hotkey_tablet_mode);
@@ -2933,7 +2933,7 @@ static ssize_t hotkey_wakeup_reason_show(struct device *dev,
 			   struct device_attribute *attr,
 			   char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
+	return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason);
 }
 
 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
@@ -2949,7 +2949,7 @@ static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
 			   struct device_attribute *attr,
 			   char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
+	return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack);
 }
 
 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO,
@@ -2984,7 +2984,7 @@ static ssize_t adaptive_kbd_mode_show(struct device *dev,
 	if (current_mode < 0)
 		return current_mode;
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", current_mode);
+	return sysfs_emit(buf, "%d\n", current_mode);
 }
 
 static ssize_t adaptive_kbd_mode_store(struct device *dev,
@@ -6334,7 +6334,7 @@ static ssize_t thermal_temp_input_show(struct device *dev,
 	if (value == TPACPI_THERMAL_SENSOR_NA)
 		return -ENXIO;
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", value);
+	return sysfs_emit(buf, "%d\n", value);
 }
 
 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
@@ -8567,7 +8567,7 @@ static ssize_t fan_pwm1_enable_show(struct device *dev,
 	} else
 		mode = 1;
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", mode);
+	return sysfs_emit(buf, "%d\n", mode);
 }
 
 static ssize_t fan_pwm1_enable_store(struct device *dev,
@@ -8633,7 +8633,7 @@ static ssize_t fan_pwm1_show(struct device *dev,
 	if (status > 7)
 		status = 7;
 
-	return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
+	return sysfs_emit(buf, "%u\n", (status * 255) / 7);
 }
 
 static ssize_t fan_pwm1_store(struct device *dev,
@@ -8686,7 +8686,7 @@ static ssize_t fan_fan1_input_show(struct device *dev,
 	if (res < 0)
 		return res;
 
-	return snprintf(buf, PAGE_SIZE, "%u\n", speed);
+	return sysfs_emit(buf, "%u\n", speed);
 }
 
 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL);
@@ -8703,7 +8703,7 @@ static ssize_t fan_fan2_input_show(struct device *dev,
 	if (res < 0)
 		return res;
 
-	return snprintf(buf, PAGE_SIZE, "%u\n", speed);
+	return sysfs_emit(buf, "%u\n", speed);
 }
 
 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
@@ -8711,7 +8711,7 @@ static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
+	return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval);
 }
 
 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf,
-- 
2.35.3