diff options
| author | Grant Likely <grant.likely@secretlab.ca> | 2010-02-02 01:05:22 -0700 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-02-02 01:05:22 -0700 |
| commit | fb7899b1f0b748ef966071f5dc23c59ebd57d08f (patch) | |
| tree | 2f13f9d8607871a60334608524e8b4e9447f5309 /drivers/hwmon/fschmd.c | |
| parent | 212b3c8b8ab94d983c2e0ee1821f17dd5b4e0859 (diff) | |
| parent | abe94c756c08d50566c09a65b9c7fe72f83071c5 (diff) | |
Merge commit 'v2.6.33-rc6' into secretlab/next-spi
Diffstat (limited to 'drivers/hwmon/fschmd.c')
| -rw-r--r-- | drivers/hwmon/fschmd.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/hwmon/fschmd.c b/drivers/hwmon/fschmd.c index bd0fc67e804..fa0728232e7 100644 --- a/drivers/hwmon/fschmd.c +++ b/drivers/hwmon/fschmd.c @@ -768,6 +768,7 @@ leave: static int watchdog_open(struct inode *inode, struct file *filp) { struct fschmd_data *pos, *data = NULL; + int watchdog_is_open; /* We get called from drivers/char/misc.c with misc_mtx hold, and we call misc_register() from fschmd_probe() with watchdog_data_mutex @@ -782,10 +783,12 @@ static int watchdog_open(struct inode *inode, struct file *filp) } } /* Note we can never not have found data, so we don't check for this */ - kref_get(&data->kref); + watchdog_is_open = test_and_set_bit(0, &data->watchdog_is_open); + if (!watchdog_is_open) + kref_get(&data->kref); mutex_unlock(&watchdog_data_mutex); - if (test_and_set_bit(0, &data->watchdog_is_open)) + if (watchdog_is_open) return -EBUSY; /* Start the watchdog */ |