watchdog: f71808e_wdt: rename variant-independent identifiers appropriately

Code for the common parts of the driver either uses watchdog_ as
prefix for the watchdog API or f71808e_ for everything else.

The driver now supports 9 more variants besides the f71808e,
so let's rename the common parts to start with fintek_wdt_ instead.

This makes code browsing easier, because it's readily apparent
that functions are not variant-specific. Some watchdog_-prefixed
functions remain, but these will be dropped altogether with the move
to the kernel watchdog API in a later commit.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/31805c6aeb8d161f852ddad7c32b91319f924988.1628525954.git-series.a.fatoum@pengutronix.deSigned-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

drivers/watchdog/f71808e_wdt.c

@@ -112,7 +112,7 @@ MODULE_PARM_DESC(start_withtimeout, "Start watchdog timer on module load with"
 enum chips { f71808fg, f71858fg, f71862fg, f71868, f71869, f71882fg, f71889fg,
 	     f81803, f81865, f81866};
 
-static const char * const f71808e_names[] = {
+static const char * const fintek_wdt_names[] = {
 	"f71808fg",
 	"f71858fg",
 	"f71862fg",
@@ -135,7 +135,7 @@ static inline int superio_enter(int base);
 static inline void superio_select(int base, int ld);
 static inline void superio_exit(int base);
 
-struct watchdog_data {
+struct fintek_wdt {
 	unsigned short	sioaddr;
 	enum chips	type;
 	unsigned long	opened;
@@ -151,7 +151,7 @@ struct watchdog_data {
 	char		caused_reboot;	/* last reboot was by the watchdog */
 };
 
-static struct watchdog_data watchdog = {
+static struct fintek_wdt watchdog = {
 	.lock = __MUTEX_INITIALIZER(watchdog.lock),
 };
 
@@ -217,7 +217,7 @@ static inline void superio_exit(int base)
 	release_region(base, 2);
 }
 
-static int watchdog_set_timeout(int timeout)
+static int fintek_wdt_set_timeout(int timeout)
 {
 	if (timeout <= 0
 	 || timeout >  WATCHDOG_MAX_TIMEOUT) {
@@ -243,7 +243,7 @@ static int watchdog_set_timeout(int timeout)
 	return 0;
 }
 
-static int watchdog_set_pulse_width(unsigned int pw)
+static int fintek_wdt_set_pulse_width(unsigned int pw)
 {
 	int err = 0;
 	unsigned int t1 = 25, t2 = 125, t3 = 5000;
@@ -277,7 +277,7 @@ static int watchdog_set_pulse_width(unsigned int pw)
 	return err;
 }
 
-static int watchdog_keepalive(void)
+static int fintek_wdt_keepalive(void)
 {
 	int err = 0;
 
@@ -307,13 +307,13 @@ static int watchdog_keepalive(void)
 	return err;
 }
 
-static int watchdog_start(void)
+static int fintek_wdt_start(void)
 {
 	int err;
 	u8 tmp;
 
 	/* Make sure we don't die as soon as the watchdog is enabled below */
-	err = watchdog_keepalive();
+	err = fintek_wdt_keepalive();
 	if (err)
 		return err;
 
@@ -434,7 +434,7 @@ static int watchdog_start(void)
 	return err;
 }
 
-static int watchdog_stop(void)
+static int fintek_wdt_stop(void)
 {
 	int err = 0;
 
@@ -466,7 +466,7 @@ static int watchdog_get_status(void)
 	return status;
 }
 
-static bool watchdog_is_running(void)
+static bool fintek_wdt_is_running(void)
 {
 	/*
 	 * if we fail to determine the watchdog's status assume it to be
@@ -500,7 +500,7 @@ static int watchdog_open(struct inode *inode, struct file *file)
 	if (test_and_set_bit(0, &watchdog.opened))
 		return -EBUSY;
 
-	err = watchdog_start();
+	err = fintek_wdt_start();
 	if (err) {
 		clear_bit(0, &watchdog.opened);
 		return err;
@@ -518,10 +518,10 @@ static int watchdog_release(struct inode *inode, struct file *file)
 	clear_bit(0, &watchdog.opened);
 
 	if (!watchdog.expect_close) {
-		watchdog_keepalive();
+		fintek_wdt_keepalive();
 		pr_crit("Unexpected close, not stopping watchdog!\n");
 	} else if (!nowayout) {
-		watchdog_stop();
+		fintek_wdt_stop();
 	}
 	return 0;
 }
@@ -562,7 +562,7 @@ static ssize_t watchdog_write(struct file *file, const char __user *buf,
 		}
 
 		/* someone wrote to us, we should restart timer */
-		watchdog_keepalive();
+		fintek_wdt_keepalive();
 	}
 	return count;
 }
@@ -609,24 +609,24 @@ static long watchdog_ioctl(struct file *file, unsigned int cmd,
 			return -EFAULT;
 
 		if (new_options & WDIOS_DISABLECARD)
-			watchdog_stop();
+			fintek_wdt_stop();
 
 		if (new_options & WDIOS_ENABLECARD)
-			return watchdog_start();
+			return fintek_wdt_start();
 		fallthrough;
 
 	case WDIOC_KEEPALIVE:
-		watchdog_keepalive();
+		fintek_wdt_keepalive();
 		return 0;
 
 	case WDIOC_SETTIMEOUT:
 		if (get_user(new_timeout, uarg.i))
 			return -EFAULT;
 
-		if (watchdog_set_timeout(new_timeout))
+		if (fintek_wdt_set_timeout(new_timeout))
 			return -EINVAL;
 
-		watchdog_keepalive();
+		fintek_wdt_keepalive();
 		fallthrough;
 
 	case WDIOC_GETTIMEOUT:
@@ -642,7 +642,7 @@ static int watchdog_notify_sys(struct notifier_block *this, unsigned long code,
 	void *unused)
 {
 	if (code == SYS_DOWN || code == SYS_HALT)
-		watchdog_stop();
+		fintek_wdt_stop();
 	return NOTIFY_DONE;
 }
 
@@ -680,7 +680,7 @@ static int __init watchdog_init(int sioaddr)
 
 	snprintf(watchdog.ident.identity,
 		sizeof(watchdog.ident.identity), "%s watchdog",
-		f71808e_names[watchdog.type]);
+		fintek_wdt_names[watchdog.type]);
 
 	err = superio_enter(sioaddr);
 	if (err)
@@ -699,10 +699,10 @@ static int __init watchdog_init(int sioaddr)
 
 	superio_exit(sioaddr);
 
-	err = watchdog_set_timeout(timeout);
+	err = fintek_wdt_set_timeout(timeout);
 	if (err)
 		return err;
-	err = watchdog_set_pulse_width(pulse_width);
+	err = fintek_wdt_set_pulse_width(pulse_width);
 	if (err)
 		return err;
 
@@ -725,7 +725,7 @@ static int __init watchdog_init(int sioaddr)
 			goto exit_miscdev;
 		}
 
-		err = watchdog_start();
+		err = fintek_wdt_start();
 		if (err) {
 			pr_err("cannot start watchdog timer\n");
 			goto exit_miscdev;
@@ -773,7 +773,7 @@ static int __init watchdog_init(int sioaddr)
 	return err;
 }
 
-static int __init f71808e_find(int sioaddr)
+static int __init fintek_wdt_find(int sioaddr)
 {
 	u16 devid;
 	int err = superio_enter(sioaddr);
@@ -829,14 +829,14 @@ static int __init f71808e_find(int sioaddr)
 	}
 
 	pr_info("Found %s watchdog chip, revision %d\n",
-		f71808e_names[watchdog.type],
+		fintek_wdt_names[watchdog.type],
 		(int)superio_inb(sioaddr, SIO_REG_DEVREV));
 exit:
 	superio_exit(sioaddr);
 	return err;
 }
 
-static int __init f71808e_init(void)
+static int __init fintek_wdt_init(void)
 {
 	static const unsigned short addrs[] = { 0x2e, 0x4e };
 	int err = -ENODEV;
@@ -848,7 +848,7 @@ static int __init f71808e_init(void)
 	}
 
 	for (i = 0; i < ARRAY_SIZE(addrs); i++) {
-		err = f71808e_find(addrs[i]);
+		err = fintek_wdt_find(addrs[i]);
 		if (err == 0)
 			break;
 	}
@@ -858,11 +858,11 @@ static int __init f71808e_init(void)
 	return watchdog_init(addrs[i]);
 }
 
-static void __exit f71808e_exit(void)
+static void __exit fintek_wdt_exit(void)
 {
-	if (watchdog_is_running()) {
+	if (fintek_wdt_is_running()) {
 		pr_warn("Watchdog timer still running, stopping it\n");
-		watchdog_stop();
+		fintek_wdt_stop();
 	}
 	misc_deregister(&watchdog_miscdev);
 	unregister_reboot_notifier(&watchdog_notifier);
@@ -872,5 +872,5 @@ MODULE_DESCRIPTION("F71808E Watchdog Driver");
 MODULE_AUTHOR("Giel van Schijndel <me@mortis.eu>");
 MODULE_LICENSE("GPL");
 
-module_init(f71808e_init);
-module_exit(f71808e_exit);
+module_init(fintek_wdt_init);
+module_exit(fintek_wdt_exit);