summaryrefslogtreecommitdiff
path: root/drivers/hwmon
diff options
context:
space:
mode:
authorGuenter Roeck <linux@roeck-us.net>2015-12-25 16:01:45 -0800
committerWim Van Sebroeck <wim@iguana.be>2015-12-29 20:36:04 +0100
commit3b8d058cfe6a3b14abee324f4c4b33e64bf61aeb (patch)
tree6b1b2085936ceef771ca8165529de8a321f4b06e /drivers/hwmon
parent43f676ace2e0591718ff493d290bc49b35ec2ffc (diff)
hwmon: (sch56xx) Drop watchdog driver data reference count callbacks
Reference counting is now implemented in the watchdog core and no longer required in watchdog drivers. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/sch56xx-common.c31
1 files changed, 1 insertions, 30 deletions
diff --git a/drivers/hwmon/sch56xx-common.c b/drivers/hwmon/sch56xx-common.c
index 738681983284..68c350c704fb 100644
--- a/drivers/hwmon/sch56xx-common.c
+++ b/drivers/hwmon/sch56xx-common.c
@@ -30,7 +30,6 @@
#include <linux/watchdog.h>
#include <linux/miscdevice.h>
#include <linux/uaccess.h>
-#include <linux/kref.h>
#include <linux/slab.h>
#include "sch56xx-common.h"
@@ -67,7 +66,6 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
struct sch56xx_watchdog_data {
u16 addr;
struct mutex *io_lock;
- struct kref kref;
struct watchdog_info wdinfo;
struct watchdog_device wddev;
u8 watchdog_preset;
@@ -258,15 +256,6 @@ EXPORT_SYMBOL(sch56xx_read_virtual_reg12);
* Watchdog routines
*/
-/* Release our data struct when we're unregistered *and*
- all references to our watchdog device are released */
-static void watchdog_release_resources(struct kref *r)
-{
- struct sch56xx_watchdog_data *data =
- container_of(r, struct sch56xx_watchdog_data, kref);
- kfree(data);
-}
-
static int watchdog_set_timeout(struct watchdog_device *wddev,
unsigned int timeout)
{
@@ -395,28 +384,12 @@ static int watchdog_stop(struct watchdog_device *wddev)
return 0;
}
-static void watchdog_ref(struct watchdog_device *wddev)
-{
- struct sch56xx_watchdog_data *data = watchdog_get_drvdata(wddev);
-
- kref_get(&data->kref);
-}
-
-static void watchdog_unref(struct watchdog_device *wddev)
-{
- struct sch56xx_watchdog_data *data = watchdog_get_drvdata(wddev);
-
- kref_put(&data->kref, watchdog_release_resources);
-}
-
static const struct watchdog_ops watchdog_ops = {
.owner = THIS_MODULE,
.start = watchdog_start,
.stop = watchdog_stop,
.ping = watchdog_trigger,
.set_timeout = watchdog_set_timeout,
- .ref = watchdog_ref,
- .unref = watchdog_unref,
};
struct sch56xx_watchdog_data *sch56xx_watchdog_register(struct device *parent,
@@ -448,7 +421,6 @@ struct sch56xx_watchdog_data *sch56xx_watchdog_register(struct device *parent,
data->addr = addr;
data->io_lock = io_lock;
- kref_init(&data->kref);
strlcpy(data->wdinfo.identity, "sch56xx watchdog",
sizeof(data->wdinfo.identity));
@@ -494,8 +466,7 @@ EXPORT_SYMBOL(sch56xx_watchdog_register);
void sch56xx_watchdog_unregister(struct sch56xx_watchdog_data *data)
{
watchdog_unregister_device(&data->wddev);
- kref_put(&data->kref, watchdog_release_resources);
- /* Don't touch data after this it may have been free-ed! */
+ kfree(data);
}
EXPORT_SYMBOL(sch56xx_watchdog_unregister);