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authorThomas Weißschuh <linux@weissschuh.net>2022-12-20 00:30:40 +0300
committerWim Van Sebroeck <wim@linux-watchdog.org>2023-02-18 17:11:40 +0300
commitad8bc199b2e3197f53228fba05128069e31893c7 (patch)
tree487dcda107210bb58f72f5c38987452bb0e34c2d /drivers/watchdog
parentb852e7a4a9ab6a1fb08c5aa36b1043672fd814dc (diff)
downloadlinux-ad8bc199b2e3197f53228fba05128069e31893c7.tar.xz
watchdog: report options in sysfs
This synchronizes the information reported by ioctl and sysfs. The mismatch is confusing because "wdctl" from util-linux uses the ioctl when used with root privileges and sysfs without. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221216-watchdog-sysfs-v2-2-6189311103a9@weissschuh.net [groeck: Fixed continuation line alignment] Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/watchdog_dev.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c
index bd5612fa2190..0122e8796879 100644
--- a/drivers/watchdog/watchdog_dev.c
+++ b/drivers/watchdog/watchdog_dev.c
@@ -547,6 +547,15 @@ static ssize_t pretimeout_show(struct device *dev,
}
static DEVICE_ATTR_RO(pretimeout);
+static ssize_t options_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct watchdog_device *wdd = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "0x%x\n", wdd->info->options);
+}
+static DEVICE_ATTR_RO(options);
+
static ssize_t fw_version_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
@@ -627,6 +636,7 @@ static umode_t wdt_is_visible(struct kobject *kobj, struct attribute *attr,
}
static struct attribute *wdt_attrs[] = {
&dev_attr_state.attr,
+ &dev_attr_options.attr,
&dev_attr_fw_version.attr,
&dev_attr_identity.attr,
&dev_attr_timeout.attr,