On 10/21/2012 01:46 PM, anish kumar wrote:
> From: anish kumar <anish198519851...@gmail.com>
>
> There was a case where free and list_del can be called twice
> on the same pointer.So fixed it by re-arranging the code and
> removing a function which was not needed.
>
> Signed-off-by: anish kumar <anish198519851...@gmail.com>
> ---
> drivers/extcon/extcon-class.c | 71
> ++++++++++++++++++-----------------------
> 1 files changed, 31 insertions(+), 40 deletions(-)
>
Applied, thanks,
But, There were some minor issue, so I fix and applied it.
[...]
> static void extcon_dev_release(struct device *dev)
> {
> - struct extcon_dev *edev = (struct extcon_dev *) dev_get_drvdata(dev);
> -
> - extcon_cleanup(edev, true);
> + struct extcon_dev *edev = dev_get_drvdata(dev);
> + kfree(edev->dev);
It is not necessary to get extcon_dev instance through dev_get_drvdata()
and only call kfree(dev) by using extcon_dev_release()'s parameter.
kfree(dev);
> }
>
> static const char *muex_name = "mutually_exclusive";
> @@ -810,7 +773,35 @@ EXPORT_SYMBOL_GPL(extcon_dev_register);
> */
> void extcon_dev_unregister(struct extcon_dev *edev)
> {
> - extcon_cleanup(edev, false);
> + mutex_lock(&extcon_dev_list_lock);
> + list_del(&edev->entry);
> + mutex_unlock(&extcon_dev_list_lock);
> +
> + if (get_device(edev->dev) != NULL) {
I prefer minimal indentation, so I will modify as below code.
int index;
mutex_lock(&extcon_dev_list_lock);
list_del(&edev->entry);
mutex_unlock(&extcon_dev_list_lock);
if (IS_ERR_OR_NULL(get_device(edev->dev))) {
dev_err(edev->dev, "Failed to unregister extcon_dev (%s)\n",
dev_name(edev->dev));
return;
}
if (edev->mutually_exclusive && edev->max_supported) {
for (index = 0; edev->mutually_exclusive[index];
index++)
kfree(edev->d_attrs_muex[index].attr.name);
kfree(edev->d_attrs_muex);
kfree(edev->attrs_muex);
}
[...]
Cheers,
Chanwoo Choi
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