diff options
| author | David Woodhouse <David.Woodhouse@intel.com> | 2010-02-26 19:04:15 +0000 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-02-26 19:06:24 +0000 |
| commit | a7790532f5b7358c33a6b1834dc2b318de209f31 (patch) | |
| tree | 0ceb9e24b3f54cb5c8453fb5a218e2a94a0f1cce /drivers/hwmon/fschmd.c | |
| parent | 2764fb4244cc1bc08df3667924ca4a972e90ac70 (diff) | |
| parent | 60b341b778cc2929df16c0a504c91621b3c6a4ad (diff) | |
| download | blackbird-op-linux-a7790532f5b7358c33a6b1834dc2b318de209f31.tar.gz blackbird-op-linux-a7790532f5b7358c33a6b1834dc2b318de209f31.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
The SmartMedia FTL code depends on new kfifo bits from 2.6.33
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 bd0fc67e804b..fa0728232e71 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 */ |
