linux-kernel - Re: linux-next: build failure after merge of the target-updates tree

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Date:	Wed, 03 Jun 2015 15:12:56 -0700
From:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Christoph Hellwig <hch@....de>,
	Bart Van Assche <bart.vanassche@...disk.com>,
	linux-scsi <linux-scsi@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the target-updates tree

On Wed, 2015-06-03 at 13:00 -0700, James Bottomley wrote:
> On Wed, 2015-06-03 at 18:16 +1000, Stephen Rothwell wrote:
> > Hi Nicholas,
> > 
> > After merging the target-updates tree, today's linux-next build (x86_64
> > allmodconfig) failed like this:
> > 
> > drivers/target/target_core_fabric_lib.c: In function 'target_get_pr_transport_id_len':
> > drivers/target/target_core_fabric_lib.c:364:7: error: 'SCSI_PROTOCOL_FCP' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_FCP:
> >        ^
> > drivers/target/target_core_fabric_lib.c:364:7: note: each undeclared identifier is reported only once for each function it appears in
> > drivers/target/target_core_fabric_lib.c:365:7: error: 'SCSI_PROTOCOL_SBP' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_SBP:
> >        ^
> > drivers/target/target_core_fabric_lib.c:366:7: error: 'SCSI_PROTOCOL_SRP' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_SRP:
> >        ^
> > drivers/target/target_core_fabric_lib.c:367:7: error: 'SCSI_PROTOCOL_SAS' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_SAS:
> >        ^
> > drivers/target/target_core_fabric_lib.c:369:7: error: 'SCSI_PROTOCOL_ISCSI' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_ISCSI:
> >        ^
> > drivers/target/target_core_fabric_lib.c: In function 'target_get_pr_transport_id':
> > drivers/target/target_core_fabric_lib.c:388:7: error: 'SCSI_PROTOCOL_SAS' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_SAS:
> >        ^
> > drivers/target/target_core_fabric_lib.c:390:7: error: 'SCSI_PROTOCOL_SBP' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_SBP:
> >        ^
> > drivers/target/target_core_fabric_lib.c:392:7: error: 'SCSI_PROTOCOL_SRP' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_SRP:
> >        ^
> > drivers/target/target_core_fabric_lib.c:394:7: error: 'SCSI_PROTOCOL_FCP' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_FCP:
> >        ^
> > drivers/target/target_core_fabric_lib.c:396:7: error: 'SCSI_PROTOCOL_ISCSI' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_ISCSI:
> >        ^
> > drivers/target/target_core_fabric_lib.c: In function 'target_parse_pr_out_transport_id':
> > drivers/target/target_core_fabric_lib.c:411:7: error: 'SCSI_PROTOCOL_SAS' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_SAS:
> >        ^
> > drivers/target/target_core_fabric_lib.c:418:7: error: 'SCSI_PROTOCOL_SBP' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_SBP:
> >        ^
> > drivers/target/target_core_fabric_lib.c:419:7: error: 'SCSI_PROTOCOL_SRP' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_SRP:
> >        ^
> > drivers/target/target_core_fabric_lib.c:420:7: error: 'SCSI_PROTOCOL_FCP' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_FCP:
> >        ^
> > drivers/target/target_core_fabric_lib.c:423:7: error: 'SCSI_PROTOCOL_ISCSI' undeclared (first use in this function)
> >   case SCSI_PROTOCOL_ISCSI:
> >        ^
> > 
> > Caused by commit 2650d71e244f ("target: move transport ID handling to
> > the core") interacting with commit ba929992522b ("target: Minimize SCSI
> > header #include directives") from the scsi tree.
> > 
> > I have added this merge fix patch for today:
> > 
> > From: Stephen Rothwell <sfr@...b.auug.org.au>
> > Date: Wed, 3 Jun 2015 18:10:46 +1000
> > Subject: [PATCH] target: explicitly include scsi_proto.h in target_core_fabric_lib.c
> > 
> > Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> > ---
> >  drivers/target/target_core_fabric_lib.c | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/drivers/target/target_core_fabric_lib.c b/drivers/target/target_core_fabric_lib.c
> > index b05578b5b4a0..cb6497ce4b61 100644
> > --- a/drivers/target/target_core_fabric_lib.c
> > +++ b/drivers/target/target_core_fabric_lib.c
> > @@ -35,6 +35,8 @@
> >  #include <linux/spinlock.h>
> >  #include <linux/export.h>
> >  
> > +#include <scsi/scsi_proto.h>
> > +
> >  #include <target/target_core_base.h>
> >  #include <target/target_core_fabric.h>
> 
> OK, this gives us a cross tree dependency on the SCSI header split
> patches.  Nic, if you base your tree off this commit in mine, I'll make
> sure to push early in the merge window.
> 
> commit ba929992522b6d1f866b7021bc50da66f8fdd743
> Author: Bart Van Assche <bart.vanassche@...disk.com>
> Date:   Fri May 8 10:11:12 2015 +0200
> 
>     target: Minimize SCSI header #include directives
> 

Rebasing one subsystem's for-next atop another subsystem's for-next is a
sure fire way to cause Linus to become irate.

But it's not even necessary here anyways, just fold Stephen's patch to
add scsi_proto.h to target_core_fabric_configfs.c into the original
change, and be done with it.

--nab

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