WDIOC_SETOPTIONS makes it possible to disable and re-enable the watchdog timer while the hpwdt driver is loaded.
Signed-off-by: Jean Delvare <[email protected]> Cc: Wim Van Sebroeck <[email protected]> --- Untested. It would be great if someone at HP (or anyone with the hardware, I guess) could test and review this patch. Thanks. Changes since v1: * Drop useless "ret = 0" statements as suggested by Guenter. drivers/watchdog/hpwdt.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) --- linux-4.1-rc8.orig/drivers/watchdog/hpwdt.c 2015-06-20 12:56:17.933391230 +0200 +++ linux-4.1-rc8/drivers/watchdog/hpwdt.c 2015-06-21 08:31:21.671106961 +0200 @@ -588,7 +588,7 @@ static long hpwdt_ioctl(struct file *fil { 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 *fil 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) -- Jean Delvare SUSE L3 Support -- To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in
