From: Jean Delvare <khali at linux-fr.org>
i2c-dev: attach/detach_adapter cleanups
* Only print that an adapter was attached when it succeeds.
* i2c_dev == NULL on detach simply means that the attach failed
before, this isn't an error per se.
Signed-off-by: Jean Delvare <khali at linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>
---
drivers/i2c/i2c-dev.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index 567fb05..3f86903 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -412,9 +412,6 @@ static int i2cdev_attach_adapter(struct
if (IS_ERR(i2c_dev))
return PTR_ERR(i2c_dev);
- pr_debug("i2c-dev: adapter [%s] registered as minor %d\n",
- adap->name, adap->nr);
-
/* register this i2c device with the driver core */
i2c_dev->class_dev = class_device_create(i2c_dev_class, NULL,
MKDEV(I2C_MAJOR, adap->nr),
@@ -427,6 +424,9 @@ static int i2cdev_attach_adapter(struct
res = class_device_create_file(i2c_dev->class_dev, &class_device_attr_name);
if (res)
goto error_destroy;
+
+ pr_debug("i2c-dev: adapter [%s] registered as minor %d\n",
+ adap->name, adap->nr);
return 0;
error_destroy:
class_device_destroy(i2c_dev_class, MKDEV(I2C_MAJOR, adap->nr));
@@ -441,8 +441,8 @@ static int i2cdev_detach_adapter(struct
struct i2c_dev *i2c_dev;
i2c_dev = i2c_dev_get_by_minor(adap->nr);
- if (!i2c_dev)
- return -ENODEV;
+ if (!i2c_dev) /* attach_adapter must have failed */
+ return 0;
class_device_remove_file(i2c_dev->class_dev, &class_device_attr_name);
return_i2c_dev(i2c_dev);
--
1.4.2.1
