Hi, Can
> * UFS device needs urgent BKOPs.
> */
> if (!hba->pm_op_in_progress &&
> - ufshcd_is_exception_event(lrbp->ucd_rsp_ptr))
> - schedule_work(&hba->eeh_work);
> + ufshcd_is_exception_event(lrbp->ucd_rsp_ptr)) {
> + /*
> + * Prevent suspend once eeh_work is scheduled
> + * to avoid deadlock between ufshcd_suspend
> + * and exception event handler.
> + */
> + if (schedule_work(&hba->eeh_work))
> + pm_runtime_get_noresume(hba->dev);
> + }
> break;
> case UPIU_TRANSACTION_REJECT_UPIU:
> /* TODO: handle Reject UPIU Response */ @@ -5215,7
> +5222,14 @@ static void ufshcd_exception_event_handler(struct work_struct
> *work)
>
> out:
> scsi_unblock_requests(hba->host);
> - pm_runtime_put_sync(hba->dev);
> + /*
> + * pm_runtime_get_noresume is called while scheduling
> + * eeh_work to avoid suspend racing with exception work.
> + * Hence decrement usage counter using pm_runtime_put_noidle
> + * to allow suspend on completion of exception event handler.
> + */
> + pm_runtime_put_noidle(hba->dev);
> + pm_runtime_put(hba->dev);
> return;
> }
>
You should rebase your this series patch, I installed your patches, it failed, there are several conflicts.
Thanks,
//Bean
