linux-kernel - Re: [patch, 2.6.26-rc2] dvb: drivers/media/dvb/ttpci/fdump firmware build error fix

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Message-ID: <20080512204634.GA10620@linuxtv.org>
Date:	Mon, 12 May 2008 22:46:34 +0200
From:	Johannes Stezenbach <js@...uxtv.org>
To:	Oliver Endriss <o.endriss@....de>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	Andrew de Quincey <adq_dvb@...skialf.net>
Subject: Re: [patch, 2.6.26-rc2] dvb: drivers/media/dvb/ttpci/fdump
	firmware build error fix

On Mon, May 12, 2008 at 10:18:15PM +0200, Oliver Endriss wrote:
> Johannes Stezenbach wrote:
> > On Mon, May 12, 2008 at 07:30:10PM +0200, Oliver Endriss wrote:
> > > Ingo Molnar wrote:
> > >> -     depends on DVB_AV7110 && !STANDALONE
> > >> +     depends on DVB_AV7110 && !STANDALONE && !PREVENT_FIRMWARE_BUILD
> > 
> > > If you set DVB_AV7110_FIRMWARE=y, the firmware file under
> > > DVB_AV7110_FIRMWARE_FILE must exist...
> > 
> > The point of PREVENT_FIRMWARE_BUILD is to make build testing
> > with "make randconfig" possible. I think you should ACK
> > this patch, it doesn't have any downsides for users of
> > this driver.
> 
> No. If randconfig deselects both STANDALONE and PREVENT_FIRMWARE_BUILD,
> the same problem will happen again...

You can put PREVENT_FIRMWARE_BUILD=y in your allrandom.config.

> The driver depends on STANDALONE, and that should be sufficient:
> | CONFIG_STANDALONE:
> |   Select this option if you don't have magic firmware for drivers that
> |   need it.

this is for excluding drivers which don't _work_ without firmware

> while CONFIG_PREVENT_FIRMWARE_BUILD means:
> | CONFIG_PREVENT_FIRMWARE_BUILD:
> |   Say yes to avoid building firmware. Firmware is usually shipped
> |   with the driver, and only when updating the firmware a rebuild
> |   should be made.

and this is for excluding drivers which don't _build_ without firmware
(badly worded, it certainly doesn't mean to build the firmware,
but build a C source file from the firmware)


Johannes
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