Use mutex instead of semaphore in struct class.
Signed-off-by: Dave Young <[EMAIL PROTECTED]>
---
drivers/i2c/i2c-core.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff -upr linux/drivers/i2c/i2c-core.c linux.new/drivers/i2c/i2c-core.c
--- linux/drivers/i2c/i2c-core.c 2007-12-28 10:06:58.000000000 +0800
+++ linux.new/drivers/i2c/i2c-core.c 2008-01-03 09:31:38.000000000 +0800
@@ -34,7 +34,6 @@
#include <linux/mutex.h>
#include <linux/completion.h>
#include <asm/uaccess.h>
-#include <asm/semaphore.h>
#include "i2c-core.h"
@@ -597,12 +596,12 @@ int i2c_register_driver(struct module *o
if (driver->attach_adapter) {
struct i2c_adapter *adapter;
- down(&i2c_adapter_class.sem);
+ mutex_lock(&i2c_adapter_class.mutex);
list_for_each_entry(adapter, &i2c_adapter_class.devices,
dev.node) {
driver->attach_adapter(adapter);
}
- up(&i2c_adapter_class.sem);
+ mutex_unlock(&i2c_adapter_class.mutex);
}
mutex_unlock(&core_lock);
@@ -631,7 +630,7 @@ void i2c_del_driver(struct i2c_driver *d
* attached. If so, detach them to be able to kill the driver
* afterwards.
*/
- down(&i2c_adapter_class.sem);
+ mutex_lock(&i2c_adapter_class.mutex);
list_for_each_entry(adap, &i2c_adapter_class.devices, dev.node) {
if (driver->detach_adapter) {
if (driver->detach_adapter(adap)) {
@@ -656,7 +655,7 @@ void i2c_del_driver(struct i2c_driver *d
}
}
}
- up(&i2c_adapter_class.sem);
+ mutex_unlock(&i2c_adapter_class.mutex);
unregister:
driver_unregister(&driver->driver);
--
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