Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 247dcad5 authored by Sylvain Lemieux's avatar Sylvain Lemieux Committed by Wim Van Sebroeck
Browse files

watchdog: pnx4008: restart: support "cmd" from userspace 



Added support to verify if a "cmd" is passed from the userspace program rebooting the system;
- if a valid "cmd" is available, handle it;
- If the received "cmd" is not supported, use the default reboot mode.

Signed-off-by: default avatarSylvain Lemieux <slemieux@tycoint.com>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent 25b286c0

drivers/watchdog/pnx4008_wdt.c

+15 −0
Original line number Diff line number Diff line
@@ -129,6 +129,21 @@ static int pnx4008_wdt_set_timeout(struct watchdog_device *wdd, 
static int pnx4008_restart_handler(struct watchdog_device *wdd,

				   unsigned long mode, void *cmd)

{

	const char *boot_cmd = cmd;



	/*

	 * Verify if a "cmd" passed from the userspace program rebooting

	 * the system; if available, handle it.

	 * - For details, see the 'reboot' syscall in kernel/reboot.c

	 * - If the received "cmd" is not supported, use the default mode.

	 */

	if (boot_cmd) {

		if (boot_cmd[0] == 'h')

			mode = REBOOT_HARD;

		else if (boot_cmd[0] == 's')

			mode = REBOOT_SOFT;

	}



	if (mode == REBOOT_SOFT) {

		/* Force match output active */

		writel(EXT_MATCH0, WDTIM_EMR(wdt_base));