Re: [PATCH 1/8] scsi: ufshpb: Cache HPB Control mode on init

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On Wed, Jan 27, 2021 at 05:12:10PM +0200, Avri Altman wrote:
> We will use it later, when we'll need to differentiate between device
> and host control modes.
> 
> Signed-off-by: Avri Altman <avri.altman@xxxxxxx>
> ---
>  drivers/scsi/ufs/ufshpb.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/scsi/ufs/ufshpb.c b/drivers/scsi/ufs/ufshpb.c
> index d3e6c5b32328..183bdf35f2d0 100644
> --- a/drivers/scsi/ufs/ufshpb.c
> +++ b/drivers/scsi/ufs/ufshpb.c
> @@ -26,6 +26,8 @@ static int tot_active_srgn_pages;
>  
>  static struct workqueue_struct *ufshpb_wq;
>  
> +static enum UFSHPB_MODE ufshpb_mode;

How are you allowed to have a single variable for a device-specific
thing?  What happens when you have two controllers or disks or whatever
you are binding to here?  How does this work at all?

This should be per-device, right?

thanks,

greg k-h



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