linux-kernel - Re: [PATCH v4 4/6] dmaengine: Make DMA Engine menu visible for AVR32 users

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <e9c3a7c20806271131i5a4f5afg94fd21a89923ffbb@mail.gmail.com>
Date:	Fri, 27 Jun 2008 11:31:49 -0700
From:	"Dan Williams" <dan.j.williams@...el.com>
To:	"David Brownell" <david-b@...bell.net>
Cc:	"Adrian Bunk" <bunk@...nel.org>,
	"Haavard Skinnemoen" <haavard.skinnemoen@...el.com>,
	"Pierre Ossman" <drzeus-list@...eus.cx>,
	linux-kernel@...r.kernel.org, linux-embedded@...r.kernel.org,
	kernel@...32linux.org, "Nelson, Shannon" <shannon.nelson@...el.com>
Subject: Re: [PATCH v4 4/6] dmaengine: Make DMA Engine menu visible for AVR32 users

On Fri, Jun 27, 2008 at 11:24 AM, David Brownell <david-b@...bell.net> wrote:
> On Friday 27 June 2008, Adrian Bunk wrote:
>> The only effect of the HAVE_DMA_ENGINE would be to not show an empty
>> kconfig menu.
>
> Well, no.  It would also make the network layer memcpy "acceleration"
> option unavailable when there was no underlying engine ... similarly
> with other pointless "we don't have that subsystem here" options.
>

Take another look.  NET_DMA depends on DMA_ENGINE which only gets
selected when a dma device driver is selected.  Each driver has its
architecture specific dependency, so the DMADEVICES arch dependency
was completely redundant.

> Plus it would help ensure that the arch dependencies are comprehenible,
> unlike that highmem thing.

The highmem dependency can go away its only purpose is to prevent
hitting the BUILD_BUG_ON in async_xor.c.

--
Dan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/