[PATCH 4/4] scsi: ufs-mediatek: Add host reset mechanism

Avri Altman Avri.Altman at wdc.com
Tue Sep 29 07:54:31 EDT 2020


> 
> 
> Add host reset mechanism to try to recover host-side errors
> during recovery flow.
> 
> Signed-off-by: Stanley Chu <stanley.chu at mediatek.com>
Reviewed-by Avri Altman <avri.altman at wdc.com>

See some nit below as well.
Thanks,
Avri

> +static void ufs_mtk_init_reset_control(struct ufs_hba *hba,
> +                                      struct reset_control **rc,
> +                                      char *str)
> +{
> +       *rc = devm_reset_control_get(hba->dev, str);
> +       if (IS_ERR(*rc)) {
How about verifying that the line is not shared as well?
Although this might not be an issue on your current platforms,
it might save you aggravation in the future..

> +               dev_info(hba->dev, "Failed to get reset control %s: %d\n",
> +                        str, PTR_ERR(*rc));
> +               *rc = NULL;
> +       }
> +}



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