linux-kernel - Re: build issue #503 for v2.6.26-rc2-433-gf26a398 : undefined reference to `request

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Message-Id: <20080523110457.de353625.rdunlap@xenotime.net>
Date:	Fri, 23 May 2008 11:04:57 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	Adrian Bunk <bunk@...nel.org>,
	Toralf Förster <toralf.foerster@....de>,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: build issue #503 for v2.6.26-rc2-433-gf26a398 :  undefined
 reference to `request_firmware'

On Fri, 23 May 2008 12:59:11 -0500 James Bottomley wrote:

> On Fri, 2008-05-23 at 10:54 -0700, Randy Dunlap wrote:
> > On Thu, 22 May 2008 11:52:24 +0100 James Bottomley wrote:
> > 
> > > On Sat, 2008-05-17 at 17:17 +0300, Adrian Bunk wrote:
> > > > On Sat, May 17, 2008 at 11:04:31AM +0100, James Bottomley wrote:
> > > > > On Fri, 2008-05-16 at 19:06 +0200, Toralf Förster wrote:
> > > > > > Hello,
> > > > > > 
> > > > > > the build (.config attached) failed, make ends with :
> > > > > > ...
> > > > > >   UPD     include/linux/compile.h
> > > > > >   CC      init/version.o
> > > > > >   LD      init/built-in.o
> > > > > >   LD      vmlinux
> > > > > > drivers/built-in.o: In function `sas_request_addr':
> > > > > > (.text+0x33bab): undefined reference to `request_firmware'
> > > > > > drivers/built-in.o: In function `sas_request_addr':
> > > > > > (.text+0x33c3f): undefined reference to `release_firmware'
> > > > > > make: *** [vmlinux] Error 1
> > > > > 
> > > > > There's a slight fault in the stub logic.  It fails for FW_LOADER=m and
> > > > > the user =y.
> > > > > 
> > > > > This should fix it.
> > > > 
> > > > An interesting question is whether we actually want to have the stub at 
> > > > all - the compile errors catched cases where someone forgot to select 
> > > > FW_LOADER at compile time instead of turning them into possible runtime 
> > > > problems as will happen after your patch.
> > > 
> > > Well, the original intent of the stubs was to have the loader nop if it
> > > wasn't available.  There was simply one case forgotten (the fact that a
> > > modular loader isn't usable from built in components).
> > > 
> > > > Are there any serious use cases where SCSI_SAS_LIBSAS is used in very 
> > > > space limited environments and without any other drivers that select 
> > > > FW_LOADER in the kernel?
> > > 
> > > Probably in the future, certainly on embedded OSs used for storage
> > > devices.  Given the convergence of SAS/SATA chips, it's possible for
> > > other handhelds, but I'm not convinced of that.
> > 
> > Has there been any resolution to this build issue?
> > 
> > Do we know what we want?  then maybe a patch can be done...
> 
> As long as the patch works, that's what I propose.

Sorry, I am not understanding what you are saying.
Please explain.

---
~Randy
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