linux-kernel - Re: [GIT *] Allow request_firmware() to be satisfied from in-kernel, use it in more drivers.

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Message-Id: <200807160145.56067.rjw@sisk.pl>
Date:	Wed, 16 Jul 2008 01:45:55 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	torvalds@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	linux-kernel@...r.kernel.org, sam@...nborg.org
Subject: Re: [GIT *] Allow request_firmware() to be satisfied from in-kernel, use it in more drivers.

On Tuesday, 15 of July 2008, David Woodhouse wrote:
> On Tue, 2008-07-15 at 13:49 -0700, David Woodhouse wrote:
> > Sam, why do we have FORCE on the rules for $(hostprogs-y)? It forces the
> > ihex2fw tool to be rebuilt, which in turn forces all .HEX->.fw
> > conversions to happen again, which means that 'make modules_install'
> > wants to write to the source tree. That's a problem in some strange
> > situations like Rafael's, where he builds on another host and exports
> > the tree read-only by NFS.
> > 
> > Can we do this? ...
> 
> Alternatively, Rafael, does this do it for you?

No, it doesn't.

> --- a/firmware/Makefile
> +++ b/firmware/Makefile
> @@ -150,11 +150,11 @@ $(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %)
>  # is actually meaningful, because the firmware has to be loaded in a certain
>  # order rather than as a single binary blob. Thus, we convert them into our
>  # more compact binary representation of ihex records (<linux/ihex.h>)
> -$(obj)/%.fw: $(obj)/%.HEX $(obj)/ihex2fw | $(objtree)/$(obj)/$$(dir %)
> +$(obj)/%.fw: $(obj)/%.HEX | $(obj)/ihex2fw $(objtree)/$(obj)/$$(dir %)
>  	$(call cmd,ihex2fw)
>  
>  # .H16 is our own modified form of Intel HEX, with 16-bit length for records.
> -$(obj)/%.fw: $(obj)/%.H16 $(obj)/ihex2fw | $(objtree)/$(obj)/$$(dir %)
> +$(obj)/%.fw: $(obj)/%.H16 | $(obj)/ihex2fw $(objtree)/$(obj)/$$(dir %)
>  	$(call cmd,h16tofw)
>  
>  $(firmware-dirs):
> 

Rafael
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