Re: [PATCH 1/1] scsi: ufs: core: Fix EH failure after wlun resume error

[Peter Wang (王信友)]

On Wed, 2025-11-12 at 06:32 +0000, Po-Wen Kao wrote:
>   google-ufshcd 3c2d0000.ufs: ufshcd_err_handler started; HBA state
> eh_fatal; ...
>   ufs_device_wlun 0:0:0:49488: START_STOP failed for power mode: 1,
> result 40000
>   ufs_device_wlun 0:0:0:49488: ufshcd_wl_runtime_resume failed: -5
>   ...
>   ufs_device_wlun 0:0:0:49488: runtime PM trying to activate child
> device 0:0:0:49488 but parent (target0:0:0) is not active
> 

Hi Brian,

How is ufshcd_err_handler triggered before the parent device
resumes? I mean, what causes ufshcd_err_handler to be 
triggered, an error interrupt or something else?

Thanks
Peter