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authorJean Delvare <khali@linux-fr.org>2006-08-15 18:30:24 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2006-09-26 15:38:50 -0700
commitdefcb46ed4666095677c8f52904b9e328587a20d (patch)
tree99ff28198c12230510a9864d64971268c2d75617 /drivers/i2c
parentb119c6c952a086f74202ccda4b7ed72161bb6522 (diff)
i2c: __must_check fixes, i2c-dev
i2c: __must_check fixes (i2c-dev) Check for error on sysfs file creation. Check for error on device creation. Delete sysfs file on device destruction. I couldn't test this one beyond compilation, as it applies on top of another patch in Greg's tree [1] which breaks all my systems when I apply it (my udev isn't recent enough.) Anyone with bleeding edge udev is welcome to test and report. [1] http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/i2c/i2c-dev-device.patch 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-dev.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index 2ce08339129..567fb05aecc 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -406,6 +406,7 @@ static struct class *i2c_dev_class;
static int i2cdev_attach_adapter(struct i2c_adapter *adap)
{
struct i2c_dev *i2c_dev;
+ int res;
i2c_dev = get_free_i2c_dev(adap);
if (IS_ERR(i2c_dev))
@@ -419,14 +420,20 @@ static int i2cdev_attach_adapter(struct i2c_adapter *adap)
MKDEV(I2C_MAJOR, adap->nr),
&adap->dev, "i2c-%d",
adap->nr);
- if (!i2c_dev->class_dev)
+ if (!i2c_dev->class_dev) {
+ res = -ENODEV;
goto error;
- class_device_create_file(i2c_dev->class_dev, &class_device_attr_name);
+ }
+ res = class_device_create_file(i2c_dev->class_dev, &class_device_attr_name);
+ if (res)
+ goto error_destroy;
return 0;
+error_destroy:
+ class_device_destroy(i2c_dev_class, MKDEV(I2C_MAJOR, adap->nr));
error:
return_i2c_dev(i2c_dev);
kfree(i2c_dev);
- return -ENODEV;
+ return res;
}
static int i2cdev_detach_adapter(struct i2c_adapter *adap)
@@ -437,6 +444,7 @@ static int i2cdev_detach_adapter(struct i2c_adapter *adap)
if (!i2c_dev)
return -ENODEV;
+ class_device_remove_file(i2c_dev->class_dev, &class_device_attr_name);
return_i2c_dev(i2c_dev);
class_device_destroy(i2c_dev_class, MKDEV(I2C_MAJOR, adap->nr));
kfree(i2c_dev);