Content-Disposition: inline; filename=i2c-core-optimize-mutex-use.patch
Stop holding the core_lists mutex when we don't actually need it.
Signed-off-by: Jean Delvare <khali at linux-fr.org>
---
drivers/i2c/i2c-core.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
--- linux-2.6.16-rc1.orig/drivers/i2c/i2c-core.c 2006-01-20 19:50:19.000000000 +0100
+++ linux-2.6.16-rc1/drivers/i2c/i2c-core.c 2006-01-20 20:04:05.000000000 +0100
@@ -288,9 +288,7 @@
{
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 @@
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 @@
}
}
- out_unlock:
mutex_unlock(&core_lists);
- return res;
+ return 0;
}
EXPORT_SYMBOL(i2c_register_driver);
--
Jean Delvare
