watchdog: i6300esb: do not hardcode heartbeat limits

The minimum, maximum and default values for the watchdog heartbeat
(timeout) were hardcoded in several places (including module parameter
description and warning message for invalid module parameter value).

This patch adds macros for the aforementioned values and replaces all
occurences of hardcoded values by these macros.

Signed-off-by: Radu Rendec <rrendec@arista.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/watchdog/i6300esb.c b/drivers/watchdog/i6300esb.c
index 147462f..4d92925 100644 (file)
--- a/drivers/watchdog/i6300esb.c
+++ b/drivers/watchdog/i6300esb.c
@@ -81,12 +81,16 @@ static int cards_found;
 
 /* module parameters */
 /* 30 sec default heartbeat (1 < heartbeat < 2*1023) */
-#define WATCHDOG_HEARTBEAT 30
+#define ESB_HEARTBEAT_MIN      1
+#define ESB_HEARTBEAT_MAX      2046
+#define ESB_HEARTBEAT_DEFAULT  30
+#define ESB_HEARTBEAT_RANGE __MODULE_STRING(ESB_HEARTBEAT_MIN) \
+       "<heartbeat<" __MODULE_STRING(ESB_HEARTBEAT_MAX)
 static int heartbeat; /* in seconds */
 module_param(heartbeat, int, 0);
 MODULE_PARM_DESC(heartbeat,
-               "Watchdog heartbeat in seconds. (1<heartbeat<2046, default="
-                               __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+       "Watchdog heartbeat in seconds. (" ESB_HEARTBEAT_RANGE
+       ", default=" __MODULE_STRING(ESB_HEARTBEAT_DEFAULT) ")");
 
 static bool nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, bool, 0);
@@ -315,13 +319,13 @@ static int esb_probe(struct pci_dev *pdev,
        /* Initialize the watchdog and make sure it does not run */
        edev->wdd.info = &esb_info;
        edev->wdd.ops = &esb_ops;
-       edev->wdd.min_timeout = 1;
-       edev->wdd.max_timeout = 2 * 0x03ff;
-       edev->wdd.timeout = WATCHDOG_HEARTBEAT;
+       edev->wdd.min_timeout = ESB_HEARTBEAT_MIN;
+       edev->wdd.max_timeout = ESB_HEARTBEAT_MAX;
+       edev->wdd.timeout = ESB_HEARTBEAT_DEFAULT;
        if (watchdog_init_timeout(&edev->wdd, heartbeat, NULL))
                dev_info(&pdev->dev,
-                       "heartbeat value must be 1<heartbeat<2046, using %u\n",
-                       edev->wdd.timeout);
+                       "heartbeat value must be " ESB_HEARTBEAT_RANGE
+                       ", using %u\n", edev->wdd.timeout);
        watchdog_set_nowayout(&edev->wdd, nowayout);
        watchdog_stop_on_reboot(&edev->wdd);
        watchdog_stop_on_unregister(&edev->wdd);