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@xxxxxxx> Suggested-by: Mike Leach <mike.leach@xxxxxxxxxx> Signed-off-by: Mao Jinlong <quic_jinlmao@xxxxxxxxxxx>
Thanks for the rework. The patch looks good to me. Suzuki
