[PATCH v3] coresight: core: Fix coresight device probe failure issue

[Jinlong Mao]

On 3/10/2022 5:10 PM, Suzuki K Poulose wrote:
> Hi Jinlong
>
>
> On 09/03/2022 14:22, Mao Jinlong wrote:
>> It is possibe that probe failure issue happens when the device
>> and its child_device's probe happens at the same time.
>> In coresight_make_links, has_conns_grp is true for parent, but
>> has_conns_grp is false for child device as has_conns_grp is set
>> to true in coresight_create_conns_sysfs_group. The probe of parent
>> device will fail at this condition. Add has_conns_grp check for
>> child device before make the links and make the process from
>> device_register to connection_create be atomic to avoid this
>> probe failure issue.
>>
>> Suggested-by: Suzuki K Poulose <suzuki.poulose at arm.com>
>> Suggested-by: Mike Leach <mike.leach at linaro.org>
>> Signed-off-by: Mao Jinlong <quic_jinlmao at quicinc.com>
>
> Thanks for the rework. The patch looks good to me.
>
> Suzuki
Thanks Suzuki.

Hi Mathieu & Mike,

Could you please help to review and provide your comments for the PATCH V3 ?

Thanks
Jinlong Mao