diff options
| author |   Jean Delvare <khali@linux-fr.org> | 2011-01-12 21:55:11 +0100 |
|---|---|---|
| committer |   Jean Delvare <khali@endymion.delvare> | 2011-01-12 21:55:11 +0100 |
| commit | 1b7243e8f51157103dcca33236163a191c8afd01 (patch) | |
| tree | 2253a2b45164f4d4ca9e384eb0eefa56dfb04860 /drivers/hwmon/fschmd.c | |
| parent | hwmon: (w83781d) Use pr_fmt and pr_<level> (diff) | |
| download | linux-dev-1b7243e8f51157103dcca33236163a191c8afd01.tar.xz linux-dev-1b7243e8f51157103dcca33236163a191c8afd01.zip | |
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>
Diffstat (limited to 'drivers/hwmon/fschmd.c')
| -rw-r--r-- | drivers/hwmon/fschmd.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/hwmon/fschmd.c b/drivers/hwmon/fschmd.c index d4d4ca65d371..aa6d8b686f82 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 ssize_t watchdog_write(struct file *filp, const char __user *buf, 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 @@ static long watchdog_ioctl(struct file *filp, unsigned int cmd, unsigned long ar 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 @@ static long watchdog_ioctl(struct file *filp, unsigned int cmd, unsigned long ar default: ret = -ENOTTY; } - mutex_unlock(&watchdog_mutex); return ret; } |