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i2c: Make i2c_unregister_device() NULL-aware

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It's a common pattern to be NULL-aware when freeing resources.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Andy Shevchenko 2017-10-31 16:21:35 +02:00 committed by Wolfram Sang
parent da24b8240f
commit 7b43dd19c9
1 changed files with 3 additions and 2 deletions
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5
drivers/i2c/i2c-core-base.c
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@ -819,6 +819,8 @@ EXPORT_SYMBOL_GPL(i2c_new_device);
*/
void i2c_unregister_device(struct i2c_client *client)
{
if (!client)
return;
if (client->dev.of_node)
of_node_clear_flag(client->dev.of_node, OF_POPULATED);
if (ACPI_COMPANION(&client->dev))
@ -1436,8 +1438,7 @@ static int __unregister_client(struct device *dev, void *dummy)
static int __unregister_dummy(struct device *dev, void *dummy)
{
struct i2c_client *client = i2c_verify_client(dev);
if (client)
i2c_unregister_device(client);
i2c_unregister_device(client);
return 0;
}