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

[Suzuki K Poulose]

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