Hello Andreas,
Thanks for your feedback.
On 03/23/2016 07:33 PM, Andreas Färber wrote:
> Hi Javier,
>
> Am 23.03.2016 um 17:15 schrieb Javier Martinez Canillas:
>> The same struct device_node * is used for looking up the I2C sensor, OF
>> graph endpoint and port. So the reference count is incremented but not
>> decremented for the endpoint and port nodes.
>>
>> Fix this by having separate pointers for each node looked up.
>>
>> Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
> [...]
>> diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c
>> index 979c388ebf60..0b04a5d25187 100644
>> --- a/drivers/media/platform/exynos4-is/fimc-is.c
>> +++ b/drivers/media/platform/exynos4-is/fimc-is.c
>> @@ -165,6 +165,7 @@ static int fimc_is_parse_sensor_config(struct fimc_is *is, unsigned int index,
>> struct device_node *node)
>> {
>> struct fimc_is_sensor *sensor = &is->sensor[index];
>> + struct device_node *ep, *port;
>> u32 tmp = 0;
>> int ret;
>>
>> @@ -175,16 +176,18 @@ static int fimc_is_parse_sensor_config(struct fimc_is *is, unsigned int index,
>> return -EINVAL;
>> }
>>
>> - node = of_graph_get_next_endpoint(node, NULL);
>> - if (!node)
>> + ep = of_graph_get_next_endpoint(node, NULL);
>> + if (!ep)
>> return -ENXIO;
>>
>> - node = of_graph_get_remote_port(node);
>> - if (!node)
>> + port = of_graph_get_remote_port(ep);
>> + of_node_put(ep);
>> + if (!port)
>> return -ENXIO;
>>
>> /* Use MIPI-CSIS channel id to determine the ISP I2C bus index. */
>> - ret = of_property_read_u32(node, "reg", &tmp);
>> + ret = of_property_read_u32(port, "reg", &tmp);
>> + of_node_put(port);
>> if (ret < 0) {
>> dev_err(&is->pdev->dev, "reg property not found at: %s\n",
>> node->full_name);
>
> port->full_name. You'll need to defer the of_node_put(port) then.
>
Right, sorry for missing that and thanks a lot for pointing it out.
> Regards,
> Andreas
>
Best regards,
--
Javier Martinez Canillas
Open Source Group
Samsung Research America
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