On Fri, 2021-06-25 at 14:12 +0200, Jiri Kosina wrote: > On Sun, 13 Jun 2021, Ye Xiang wrote: > > > ISH IPC driver uses asynchronous workqueue to do resume now, but > > there is > > a potential timing issue: when child devices resume before bus > > driver, it > > will cause child devices resume failed and cannot be recovered > > until > > reboot. The current implementation in this case do wait for IPC to > > resume > > but fail to accommodate for a case when there is no ISH reboot and > > soft > > resume is taking time. This issue is apparent on Tiger Lake > > platform with > > 5.11.13 kernel when doing suspend to idle then resume(s0ix) test. > > To > > resolve this issue, we change ISHTP HID client to use asynchronous > > resume > > callback too. In the asynchronous resume callback, it waits for the > > ISHTP > > resume done event, and then notify ISHTP HID client link ready. > > > > Signed-off-by: Ye Xiang <xiang.ye@xxxxxxxxx> > > Srinivas, can I please get your Ack for this one? Done. Thanks, Srinivas > > Thanks, >
