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watchdog: Drop pointer to watchdog device from struct watchdog_device

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The lifetime of the watchdog device pointer is different from the lifetime
of its character device. Remove it entirely to avoid race conditions.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Guenter Roeck
2016-01-03 15:11:58 -08:00
committed by Wim Van Sebroeck
parent 2c2f3080de
commit 0254e95353
4 changed files with 8 additions and 13 deletions
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2
Documentation/watchdog/watchdog-kernel-api.txt
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@@ -44,7 +44,6 @@ The watchdog device structure looks like this:
struct watchdog_device {
int id;
struct device *dev;
struct device *parent;
const struct attribute_group **groups;
const struct watchdog_info *info;
@@ -66,7 +65,6 @@ It contains following fields:
/dev/watchdog0 cdev (dynamic major, minor 0) as well as the old
/dev/watchdog miscdev. The id is set automatically when calling
watchdog_register_device.
* dev: device under the watchdog class (created by watchdog_register_device).
* parent: set this to the parent device (or NULL) before calling
watchdog_register_device.
* groups: List of sysfs attribute groups to create when creating the watchdog