hwmon: (fschmd) Drop useless mutex
As discussed one year ago, the WDIOC_GETSUPPORT ioctl only needs a
mutex because it operates on a static variable. There is no good
reason to keep this variable static, so let's just make it non-static
and drop the now useless mutex altogether.
See the discussion at:
http://marc.info/?l=lm-sensors&m=125563869402323&w=2
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/drivers/hwmon/fschmd.c b/drivers/hwmon/fschmd.c
index d4d4ca6..aa6d8b6 100644
--- a/drivers/hwmon/fschmd.c
+++ b/drivers/hwmon/fschmd.c
@@ -49,7 +49,6 @@
#include <linux/kref.h>
/* Addresses to scan */
-static DEFINE_MUTEX(watchdog_mutex);
static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END };
/* Insmod parameters */
@@ -850,7 +849,7 @@
static long watchdog_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
- static struct watchdog_info ident = {
+ struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT |
WDIOF_CARDRESET,
.identity = "FSC watchdog"
@@ -858,7 +857,6 @@
int i, ret = 0;
struct fschmd_data *data = filp->private_data;
- mutex_lock(&watchdog_mutex);
switch (cmd) {
case WDIOC_GETSUPPORT:
ident.firmware_version = data->revision;
@@ -915,7 +913,6 @@
default:
ret = -ENOTTY;
}
- mutex_unlock(&watchdog_mutex);
return ret;
}