diff options
| author | Jean Delvare <khali@linux-fr.org> | 2006-02-05 23:28:21 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-03-23 14:21:53 -0800 |
| commit | 7eebcb7c0f4d45168265bdca79cc3e609d68d436 (patch) | |
| tree | c8a46a299470731d0aab60e850cce4fc51a04657 /drivers/i2c | |
| parent | fabddcd49d8b4fca40ce346f701853888d98b5d2 (diff) | |
| download | linux-7eebcb7c0f4d45168265bdca79cc3e609d68d436.tar.gz | |
[PATCH] i2c: Optimize core_lists mutex usage
Stop holding the core_lists mutex when we don't actually need it.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/i2c-core.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 975cb647da1026..45e2cdf547367b 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -288,9 +288,7 @@ int i2c_register_driver(struct module *owner, struct i2c_driver *driver) { struct list_head *item; struct i2c_adapter *adapter; - int res = 0; - - mutex_lock(&core_lists); + int res; /* add the driver to the list of i2c drivers in the driver core */ driver->driver.owner = owner; @@ -298,8 +296,10 @@ int i2c_register_driver(struct module *owner, struct i2c_driver *driver) res = driver_register(&driver->driver); if (res) - goto out_unlock; + return res; + mutex_lock(&core_lists); + list_add_tail(&driver->list,&drivers); pr_debug("i2c-core: driver [%s] registered\n", driver->driver.name); @@ -311,9 +311,8 @@ int i2c_register_driver(struct module *owner, struct i2c_driver *driver) } } - out_unlock: mutex_unlock(&core_lists); - return res; + return 0; } EXPORT_SYMBOL(i2c_register_driver); |