Commit 46c80b20 authored by Jean Delvare's avatar Jean Delvare Committed by Wim Van Sebroeck
Browse files

watchdog: hpwdt: Add support for WDIOC_SETOPTIONS 



WDIOC_SETOPTIONS makes it possible to disable and re-enable the
watchdog timer while the hpwdt driver is loaded.

Signed-off-by: default avatarJean Delvare <jdelvare@suse.de>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent a47911e9

drivers/watchdog/hpwdt.c

+15 −1
Original line number Diff line number Diff line
@@ -588,7 +588,7 @@ static long hpwdt_ioctl(struct file *file, unsigned int cmd, 
{

	void __user *argp = (void __user *)arg;

	int __user *p = argp;

	int new_margin;

	int new_margin, options;

	int ret = -ENOTTY;



	switch (cmd) {
@@ -608,6 +608,20 @@ static long hpwdt_ioctl(struct file *file, unsigned int cmd, 
		ret = 0;

		break;



	case WDIOC_SETOPTIONS:

		ret = get_user(options, p);

		if (ret)

			break;



		if (options & WDIOS_DISABLECARD)

			hpwdt_stop();



		if (options & WDIOS_ENABLECARD) {

			hpwdt_start();

			hpwdt_ping();

		}

		break;



	case WDIOC_SETTIMEOUT:

		ret = get_user(new_margin, p);

		if (ret)