wifi: p54: use 'time_left' variable with wait_for_completion_interruptible_timeout()

There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_for_completion_interruptible_timeout() causing patterns like:

	timeout = wait_for_completion_interruptible_timeout(...)
	if (!timeout) return -ETIMEDOUT;

with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.

Fix to the proper variable type 'long' while here.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240603091541.8367-5-wsa+renesas@sang-engineering.com

drivers/net/wireless/intersil/p54/fwio.c

@@ -216,7 +216,7 @@ int p54_download_eeprom(struct p54_common *priv, void *buf,
 	struct sk_buff *skb;
 	size_t eeprom_hdr_size;
 	int ret = 0;
-	long timeout;
+	long time_left;
 
 	if (priv->fw_var >= 0x509)
 		eeprom_hdr_size = sizeof(*eeprom_hdr);
@@ -245,9 +245,9 @@ int p54_download_eeprom(struct p54_common *priv, void *buf,
 
 	p54_tx(priv, skb);
 
-	timeout = wait_for_completion_interruptible_timeout(
+	time_left = wait_for_completion_interruptible_timeout(
 			&priv->eeprom_comp, HZ);
-	if (timeout <= 0) {
+	if (time_left <= 0) {
 		wiphy_err(priv->hw->wiphy,
 			"device does not respond or signal received!\n");
 		ret = -EBUSY;

drivers/net/wireless/intersil/p54/p54pci.c

@@ -434,7 +434,7 @@ static int p54p_open(struct ieee80211_hw *dev)
 {
 	struct p54p_priv *priv = dev->priv;
 	int err;
-	long timeout;
+	long time_left;
 
 	init_completion(&priv->boot_comp);
 	err = request_irq(priv->pdev->irq, p54p_interrupt,
@@ -472,12 +472,12 @@ static int p54p_open(struct ieee80211_hw *dev)
 	P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
 	P54P_READ(dev_int);
 
-	timeout = wait_for_completion_interruptible_timeout(
+	time_left = wait_for_completion_interruptible_timeout(
 			&priv->boot_comp, HZ);
-	if (timeout <= 0) {
+	if (time_left <= 0) {
 		wiphy_err(dev->wiphy, "Cannot boot firmware!\n");
 		p54p_stop(dev);
-		return timeout ? -ERESTARTSYS : -ETIMEDOUT;
+		return time_left ? -ERESTARTSYS : -ETIMEDOUT;
 	}
 
 	P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_UPDATE));

drivers/net/wireless/intersil/p54/p54spi.c

@@ -518,7 +518,7 @@ static void p54spi_work(struct work_struct *work)
 static int p54spi_op_start(struct ieee80211_hw *dev)
 {
 	struct p54s_priv *priv = dev->priv;
-	unsigned long timeout;
+	long time_left;
 	int ret = 0;
 
 	if (mutex_lock_interruptible(&priv->mutex)) {
@@ -538,10 +538,10 @@ static int p54spi_op_start(struct ieee80211_hw *dev)
 
 	mutex_unlock(&priv->mutex);
 
-	timeout = msecs_to_jiffies(2000);
-	timeout = wait_for_completion_interruptible_timeout(&priv->fw_comp,
-							    timeout);
-	if (!timeout) {
+	time_left = msecs_to_jiffies(2000);
+	time_left = wait_for_completion_interruptible_timeout(&priv->fw_comp,
+							      time_left);
+	if (!time_left) {
 		dev_err(&priv->spi->dev, "firmware boot failed");
 		p54spi_power_off(priv);
 		ret = -1;