Hi Marek,
On Sat, Jun 24, 2017 at 1:55 AM, Marek Vasut <ma...@denx.de> wrote:
> On 06/23/2017 11:54 AM, Bin Meng wrote:
>> Sometimes we need know if a given hub device is root hub or not.
>> Add a new API to test this.
>>
>> Signed-off-by: Bin Meng <bmeng...@gmail.com>
>> ---
>>
>> common/usb_hub.c | 10 ++++++++++
>> include/usb.h | 8 ++++++++
>> 2 files changed, 18 insertions(+)
>>
>> diff --git a/common/usb_hub.c b/common/usb_hub.c
>> index 18bd827..d780251 100644
>> --- a/common/usb_hub.c
>> +++ b/common/usb_hub.c
>> @@ -74,6 +74,16 @@ static inline bool usb_hub_is_superspeed(struct
>> usb_device *hdev)
>> return hdev->descriptor.bDeviceProtocol == 3;
>> }
>>
>> +#ifdef CONFIG_DM_USB
>> +bool usb_hub_is_root_hub(struct udevice *hub)
>> +{
>> + if (device_get_uclass_id(hub->parent) != UCLASS_USB_HUB)
>
> Can this call fail ?
No,
Regards,
Bin
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