Quoting Kuppuswamy Sathyanarayanan (2023-08-30 20:28:57) > > > On 8/30/2023 6:14 PM, Stephen Boyd wrote: > > I recently looked at some crash reports on ChromeOS devices that call > > into this intel_scu_ipc driver. They were hitting timeouts, and it > > certainly looks possible for those timeouts to be triggering because of > > scheduling issues. Once things started going south, the timeouts kept > > Are you talking about timeouts during IPC command? Yes? I see messages like this intel_scu_ipc intel_scu_ipc: IPC command 0x200a7 failed with -110 which led me to this driver and I wrote these patches based on that failure message. I was trying to figure out how that could happen, and it seems that it could simply be scheduling delays while nothing is really timing out. > > > coming. Maybe that's because the other side got seriously confused? I > > don't know. I'll poke at it some more by injecting timeouts on the > > kernel side. > > Do you think it is possible due to a firmware issue? I have no idea. Is there some way to figure that out? I'm not able to reproduce the problem locally.