linux-kernel - Re: [PATCH 1/2] ses: use scsi_is_sas_rphy instead of is_sas

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Date:	Mon, 15 Aug 2016 16:40:27 +0200
From:	Johannes Thumshirn <jthumshirn@...e.de>
To:	James Bottomley <jejb@...ux.vnet.ibm.com>
Cc:	kbuild test robot <lkp@...el.com>, kbuild-all@...org,
	"Martin K . Petersen" <martin.petersen@...cle.com>,
	Hannes Reinecke <hare@...e.de>,
	Linux Kernel Mailinglist <linux-kernel@...r.kernel.org>,
	Linux SCSI Mailinglist <linux-scsi@...r.kernel.org>,
	stable@...r.kernel.org, #@...e.de, v4.5+@...e.de
Subject: Re: [PATCH 1/2] ses: use scsi_is_sas_rphy instead of is_sas_attached

On Mon, Aug 15, 2016 at 07:25:53AM -0700, James Bottomley wrote:
> On Mon, 2016-08-15 at 22:11 +0800, kbuild test robot wrote:
> > Hi Johannes,
> > 
> > [auto build test ERROR on scsi/for-next]
> > [also build test ERROR on v4.8-rc2 next-20160815]
> > [if your patch is applied to the wrong git tree, please drop us a 
> > note to help improve the system]
> 
> This is happening because scsi_is_sas_rphy wasn't designed to be used
> outside the SAS transport class, so it's failing when the ATTRs aren't
> defined.
> 
> This is the way you fix it (needs to be a precursor patch to 1/2):
> 
> James

Thanks, but I'm wondering about the call to sas_get_address(). It was
there before the patch as well and now it's an undefined reference. Am
I missing something here? Sure it can be guarded in the #if block.

> 
> ---
> 
> diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h
> index 13c0b2b..0e1c50e 100644
> --- a/include/scsi/scsi_transport_sas.h
> +++ b/include/scsi/scsi_transport_sas.h
> @@ -15,8 +15,13 @@ static inline int is_sas_attached(struct scsi_device *sdev)
>  {
>  	return 0;
>  }
> +static inline int scsi_is_sas_rphy(const struct device *)
> +{
> +	return 0;
> +}
>  #else
>  extern int is_sas_attached(struct scsi_device *sdev);
> +extern int scsi_is_sas_rphy(const struct device *);
>  #endif
>  
>  static inline int sas_protocol_ata(enum sas_protocol proto)
> @@ -202,7 +207,6 @@ extern int sas_rphy_add(struct sas_rphy *);
>  extern void sas_rphy_remove(struct sas_rphy *);
>  extern void sas_rphy_delete(struct sas_rphy *);
>  extern void sas_rphy_unlink(struct sas_rphy *);
> -extern int scsi_is_sas_rphy(const struct device *);
>  
>  struct sas_port *sas_port_alloc(struct device *, int);
>  struct sas_port *sas_port_alloc_num(struct device *);
> 
> --
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-- 
Johannes Thumshirn                                          Storage
jthumshirn@...e.de                                +49 911 74053 689
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