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

[Brian Kao]

> Fault injection using saved_uic_err could create this situation,
> but if this cannot happen in reality, we should consider whether
> this is a reasonable test case? If it is, then I think this patch
> looks good to me. If not, maybe we should get the runtime PM state
> in the fault injection and remove this redundant recovery code.
> What do you think?

Hi Peter,

Sorry that I didn't mention that this is in the resume path.
The resume flow in bellow will re-enable IRQ and go through full
re-initialization which potentially trigger issue I described
previously
```
ufshcd_resume()
    ufshcd_enable_irq(hba);
ufshcd_wl_resume()
    ufshcd_reset_and_restore()                            <== depends
on PM level
        ufshcd_hba_enable()
        ufshcd_probe_hba()
    ufshcd_set_dev_pwr_mode(hba, UFS_ACTIVE_PWR_MODE);    <== EH is
scheduled before this point
    ....
```