From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] drm: mediatek: remove IOMMU_DMA select
Date: Wed, 11 May 2016 22:15:20 +0200 [thread overview]
Message-ID: <3436915.Zo8cThvXaA@wuerfel> (raw)
In-Reply-To: <1462997501-982363-1-git-send-email-arnd@arndb.de>
On Wednesday 11 May 2016 22:11:07 Arnd Bergmann wrote:
> We get a harmless build warning when trying to use the mediatek
> DRM driver with IOMMU support disabled:
>
> warning: (DRM_MEDIATEK) selects IOMMU_DMA which has unmet direct dependencies (IOMMU_SUPPORT)
>
> However, the IOMMU_DMA symbol is not meant to be used by drivers
> at all, and this driver doesn't seem to have a strict dependency
> on it other than using the mediatek IOMMU driver that does.
>
> Since we also want to be able to do compile tests with the
> driver on other platforms, the IOMMU_DMA symbol should not
> be selected here.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> If someone has a better explanation about why the 'select' is here,
> let me know, it certainly seems out of place.
Sorry, I didn't mean to send this as a reply to "More build fixes for
omapdrm in current -next", I copied the wrong command line.
I'll resend it if necessary.
Arnd
next prev parent reply other threads:[~2016-05-11 20:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-11 16:01 More build fixes for omapdrm in current -next Arnd Bergmann
2016-05-11 16:01 ` [PATCH 1/3] drm/omap: include linux/seq_file.h where needed Arnd Bergmann
2016-05-11 16:01 ` [PATCH 2/3] drm/omap: include linux/of.h " Arnd Bergmann
2016-05-11 16:05 ` [PATCH 3/3] drm/omap: include gpio/consumer.h " Arnd Bergmann
2016-05-11 20:11 ` [PATCH] drm: mediatek: remove IOMMU_DMA select Arnd Bergmann
2016-05-11 20:15 ` Arnd Bergmann [this message]
2016-06-21 13:19 ` Thierry Reding
2016-05-12 9:24 ` Robin Murphy
2016-05-12 10:46 ` Philipp Zabel
2016-05-17 8:07 ` More build fixes for omapdrm in current -next Tomi Valkeinen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3436915.Zo8cThvXaA@wuerfel \
--to=arnd@arndb.de \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox