On Fri, Aug 11, 2017 at 01:52:17AM +0800, weiping zhang wrote:
> if scsi_host_template->host_reset is NULL, when user
> "echo adapter > /sys/class/scsi_host/hostx/host_reset",
> -EINVAL will return even string compare successfully. It make user confuse.
> 
> change to:
> -EINVAL               if string not match "adapter" / "firmware";
> -EOPNOTSUPP   if string match but not implement ->host_reset.
> 
> Signed-off-by: weiping zhang <zhangweip...@didichuxing.com>
> ---
>  drivers/scsi/scsi_sysfs.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
> index dff8faf..3e664f4 100644
> --- a/drivers/scsi/scsi_sysfs.c
> +++ b/drivers/scsi/scsi_sysfs.c
> @@ -272,6 +272,8 @@ store_host_reset(struct device *dev, struct 
> device_attribute *attr,
>  
>       if (sht->host_reset)
>               ret = sht->host_reset(shost, type);
> +     else
> +             ret = -EOPNOTSUPP;
>  
>  exit_store_host_reset:
>       if (ret == 0)
> -- 
Hi Martin,

Could you please take a look at this patch at your convinience.

thanks

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