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authorJean Delvare <jdelvare@suse.de>2015-06-21 09:32:33 +0200
committerWim Van Sebroeck <wim@iguana.be>2015-06-22 15:54:36 +0200
commit46c80b20d07e9309677d81e1226dc30a055b63b7 (patch)
tree7dee31b813cf2bf913a78d9f24a7fee8b3daa3bb /drivers/watchdog
parenta47911e99fe8d2080426951711a7e776d331ba77 (diff)
downloadblackbird-op-linux-46c80b20d07e9309677d81e1226dc30a055b63b7.tar.gz
blackbird-op-linux-46c80b20d07e9309677d81e1226dc30a055b63b7.zip
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: Jean Delvare <jdelvare@suse.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/hpwdt.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index ada3e44f9932..286369d4f0f5 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -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)
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