From: Thierry Reding <thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
To: "Terje Bergström" <tbergstrom-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
"linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org"
<dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Arto Merilainen
<amerilainen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Subject: Re: [RFC v2 6/8] gpu: drm: tegra: Remove redundant host1x
Date: Thu, 20 Dec 2012 21:30:59 +0100 [thread overview]
Message-ID: <20121220203059.GA12977@avionic-0098.adnet.avionic-design.de> (raw)
In-Reply-To: <50D35287.3040509-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 1261 bytes --]
On Thu, Dec 20, 2012 at 08:01:43PM +0200, Terje Bergström wrote:
> On 20.12.2012 19:55, Stephen Warren wrote:
> > So it's fine for the tegradrm driver to manipulate the tegradrm
> > (virtual) device's drvdata pointer.
> >
> > It's not fine for tegradrm to manipulate the drvdata pointer of other
> > devices; the host1x children. The drvdata pointer for other devices is
> > reserved for those devices' driver's use only.
>
> They're all tegradrm drivers, so tegradrm can manipulate its drvdata.
> The other simple way is global pointer. Let's aim now for a simple
> solution, and if later we find out it causes problems, let's fix it then.
The problem with your proposed solution is that, even any of Stephen's
valid objections aside, it won't work. Once the tegra-drm module is
unloaded, the driver's data will be left in the current state and the
link to the dummy device will be lost.
I don't think waiting for things to fail is the right option here. If we
can make out this problem now, then now is the time to fix it. No
excuses.
And quite frankly given how all the various host1x components are
interlinked I think having a single function that gets the DRM dummy
device for DRM-related clients isn't that bad.
Thierry
[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]
next prev parent reply other threads:[~2012-12-20 20:30 UTC|newest]
Thread overview: 145+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-26 13:19 [RFC v2 0/8] Support for Tegra 2D hardware Terje Bergstrom
2012-11-26 13:19 ` [RFC v2 1/8] video: tegra: Add nvhost driver Terje Bergstrom
[not found] ` <1353935954-13763-2-git-send-email-tbergstrom-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-27 10:52 ` Sivaram Nair
2012-11-28 21:23 ` Thierry Reding
[not found] ` <20121128212301.GA25531-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-11-29 10:21 ` Terje Bergström
[not found] ` <50B73710.2040102-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-29 11:47 ` Thierry Reding
[not found] ` <20121129114704.GB6150-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-11-29 18:38 ` Stephen Warren
2012-11-30 6:52 ` Thierry Reding
2012-11-30 8:50 ` Lucas Stach
2012-12-01 11:44 ` Terje Bergström
[not found] ` <50B9EDA9.2000500-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-01 15:10 ` Thierry Reding
[not found] ` <20121201151020.GC18209-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-01 16:55 ` Terje Bergström
[not found] ` <50BA3668.1010504-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-01 17:34 ` Lucas Stach
2012-12-01 19:29 ` Terje Bergström
[not found] ` <50BA5AB2.8000604-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-01 21:42 ` Dave Airlie
[not found] ` <CAPM=9tzUYkMZhwReSDLxvMYvgDmXukajm8EMqtzqmcNeD+oMAw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-12-01 22:39 ` Thierry Reding
2012-12-02 11:24 ` Terje Bergström
[not found] ` <50BB3A5D.6070304-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-02 20:55 ` Thierry Reding
[not found] ` <20121202205527.GA22086-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-03 6:26 ` Terje Bergström
2012-11-30 8:56 ` Terje Bergström
[not found] ` <50B874C7.5030208-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-30 10:38 ` Thierry Reding
[not found] ` <20121130103850.GA28367-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-01 11:31 ` Terje Bergström
2012-12-01 13:42 ` Daniel Vetter
[not found] ` <CAKMK7uGnm7M5ad=aeCNiFLYXbJZ9Nx-vsGrstjt5_3BcrqWVqA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-12-01 16:22 ` Terje Bergström
[not found] ` <50B9EA76.10803-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-01 14:58 ` Thierry Reding
[not found] ` <20121201145814.GB18209-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-01 17:13 ` Terje Bergström
2012-12-03 19:23 ` Stephen Warren
[not found] ` <50BCFC34.5030203-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-12-04 21:31 ` Thierry Reding
2012-12-03 19:20 ` Stephen Warren
2012-12-03 21:03 ` Thierry Reding
[not found] ` <20121203210328.GA20884-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-04 2:08 ` Mark Zhang
2012-12-04 2:11 ` Mark Zhang
2012-12-04 6:17 ` Terje Bergström
2012-11-29 18:34 ` Stephen Warren
2012-11-30 6:54 ` Terje Bergström
2012-11-30 6:53 ` Thierry Reding
2012-11-29 9:10 ` [RFC,v2,1/8] " Mark Zhang
2012-12-10 10:28 ` Terje Bergström
[not found] ` <1353935954-13763-1-git-send-email-tbergstrom-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-26 13:19 ` [RFC v2 2/8] video: tegra: Add syncpoint wait and interrupts Terje Bergstrom
2012-11-27 11:02 ` Sivaram Nair
2012-11-29 8:44 ` Thierry Reding
[not found] ` <20121129084400.GA28781-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-11-29 10:39 ` Terje Bergström
2012-11-30 7:22 ` Thierry Reding
[not found] ` <20121130072200.GE26474-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-11-30 7:41 ` Terje Bergström
2012-11-29 18:41 ` Stephen Warren
2012-11-30 7:23 ` Thierry Reding
2012-11-26 13:19 ` [RFC v2 3/8] video: tegra: host: Add channel and client support Terje Bergstrom
[not found] ` <1353935954-13763-4-git-send-email-tbergstrom-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-29 10:01 ` [RFC,v2,3/8] " Mark Zhang
[not found] ` <50B7325F.20002-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2012-11-29 10:46 ` Terje Bergström
2012-11-30 6:13 ` Mark Zhang
2012-11-29 10:04 ` [RFC v2 3/8] " Thierry Reding
[not found] ` <20121129100405.GB28781-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-11-29 11:00 ` Terje Bergström
[not found] ` <50B74058.9020904-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-30 7:46 ` Thierry Reding
2012-11-26 13:19 ` [RFC v2 4/8] video: tegra: Add debug support Terje Bergstrom
2012-11-26 13:19 ` [RFC v2 6/8] gpu: drm: tegra: Remove redundant host1x Terje Bergstrom
[not found] ` <1353935954-13763-7-git-send-email-tbergstrom-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-05 8:33 ` Thierry Reding
[not found] ` <20121205083335.GA20984-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-05 10:10 ` Terje Bergström
[not found] ` <50BF1DAA.8030805-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-05 11:13 ` Thierry Reding
[not found] ` <20121205111332.GA25676-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-05 11:47 ` Terje Bergström
2012-12-05 12:03 ` Daniel Vetter
[not found] ` <CAKMK7uGPf=TEW8DL-K1KYPhMZALTZhFsSb2DBxDVgFct1kUjSA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-12-05 12:08 ` Daniel Vetter
2012-12-05 12:22 ` Thierry Reding
[not found] ` <20121205122209.GB29943-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-05 12:31 ` Daniel Vetter
[not found] ` <CAKMK7uFy=Hkqqqom=yOZ8dgSGjRT4JCJuJK7coJ+i=OyovKcYQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-12-05 13:28 ` Thierry Reding
[not found] ` <20121205132843.GA2834-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-05 16:34 ` Daniel Vetter
[not found] ` <CAKMK7uG2OHOmH8OJJmZ4uoNWwoeA0wRyiE4VdR9C3ajC1ZBZDw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-12-05 20:44 ` Thierry Reding
[not found] ` <50BF345A.8050201-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-05 12:02 ` Lucas Stach
2012-12-05 12:04 ` Thierry Reding
[not found] ` <20121205120429.GA29943-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-05 15:43 ` Terje Bergström
2012-12-10 11:42 ` Terje Bergström
[not found] ` <50C5CAB5.3040000-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-12 16:08 ` Thierry Reding
[not found] ` <20121212160829.GA30278-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-12 16:56 ` Terje Bergström
2012-12-13 8:48 ` Terje Bergström
2012-12-13 8:57 ` Thierry Reding
[not found] ` <20121213085750.GA14740-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-13 17:58 ` Stephen Warren
[not found] ` <50CA175F.60002-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-12-13 20:32 ` Thierry Reding
2012-12-14 6:09 ` Terje Bergström
2012-12-14 16:21 ` Stephen Warren
[not found] ` <50CB5205.1030303-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-12-14 19:59 ` Terje Bergström
[not found] ` <50CB850F.9090704-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-16 12:16 ` Thierry Reding
[not found] ` <20121216121603.GA31780-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-16 16:37 ` Terje Bergström
[not found] ` <50CDF8C4.4070108-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-17 20:55 ` Stephen Warren
[not found] ` <50CF86D1.7090303-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-12-18 6:37 ` Terje Bergström
2012-12-20 9:17 ` Terje Bergström
[not found] ` <50D2D792.1050401-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-20 17:14 ` Stephen Warren
[not found] ` <50D34775.5010606-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-12-20 17:46 ` Terje Bergström
[not found] ` <50D34F00.4080308-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-20 17:55 ` Stephen Warren
[not found] ` <50D3511F.2090308-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-12-20 18:01 ` Terje Bergström
[not found] ` <50D35287.3040509-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-20 20:30 ` Thierry Reding [this message]
[not found] ` <20121220203059.GA12977-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-20 21:34 ` Terje Bergström
[not found] ` <50D38462.3060302-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-20 21:50 ` Thierry Reding
[not found] ` <20121220215008.GA30491-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-20 22:29 ` Stephen Warren
2012-12-20 22:28 ` Stephen Warren
[not found] ` <50D39122.3060401-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-12-21 6:31 ` Terje Bergström
2012-12-21 8:57 ` Arto Merilainen
[not found] ` <50D42486.7080901-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-12-21 21:19 ` Stephen Warren
[not found] ` <50D4D25B.7030506-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-01-02 5:41 ` Terje Bergström
2013-01-04 10:09 ` Terje Bergström
[not found] ` <50E6AA69.4030001-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-01-04 20:25 ` Stephen Warren
[not found] ` <50E73AA2.7090500-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-01-07 8:20 ` Terje Bergström
[not found] ` <50EA8533.3020109-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-01-07 17:07 ` Stephen Warren
2013-01-15 11:30 ` Thierry Reding
[not found] ` <20130115113049.GB18119-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2013-01-15 11:41 ` Terje Bergström
2012-11-26 13:19 ` [RFC v2 7/8] gpu: drm: tegra: Prime support Terje Bergstrom
2012-12-01 14:45 ` [RFC v2 0/8] Support for Tegra 2D hardware Thierry Reding
[not found] ` <20121201144512.GA18209-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-12-01 17:08 ` Terje Bergström
2012-12-01 19:29 ` Thierry Reding
2012-11-26 13:19 ` [RFC v2 5/8] ARM: tegra: Add auxiliary data for nvhost Terje Bergstrom
[not found] ` <1353935954-13763-6-git-send-email-tbergstrom-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-26 23:39 ` Stephen Warren
[not found] ` <50B3FDCC.7080709-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-11-27 6:33 ` Terje Bergström
[not found] ` <50B45EA8.7000502-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-27 17:17 ` Stephen Warren
2012-11-26 13:19 ` [RFC v2 8/8] drm: tegra: Add gr2d device Terje Bergstrom
[not found] ` <1353935954-13763-9-git-send-email-tbergstrom-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-26 21:59 ` Rob Clark
2012-11-26 22:15 ` Dave Airlie
[not found] ` <CAPM=9tzvt3J6D3zLPV97w629q62CNhAxX8V+_JZ6kmXxxz5fVg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-11-27 6:52 ` Terje Bergström
[not found] ` <50B46336.8030605-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-27 7:33 ` Dave Airlie
[not found] ` <CAPM=9txCuPJcFAfD7Hu5o2BVFK=pVah7B8HhG0ctLCyFPwNEnA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-11-27 8:16 ` Terje Bergström
[not found] ` <50B476E1.4070403-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-27 8:32 ` Dave Airlie
[not found] ` <CAPM=9tysiK6LgnQdAwGSYfxnQfgcfRm0+X2tPSAEDxUPt-QZGA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-11-27 8:45 ` Terje Bergström
[not found] ` <50B47DA8.60609-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-27 10:22 ` Lucas Stach
2012-11-27 10:37 ` Thierry Reding
[not found] ` <20121127103739.GA3329-RM9K5IK7kjIyiCvfTdI0JKcOhU4Rzj621B7CTYaBSLdn68oJJulU0Q@public.gmane.org>
2012-11-27 11:31 ` Terje Bergström
[not found] ` <50B4A483.8030305-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-27 11:47 ` Lucas Stach
2012-11-27 12:59 ` Terje Bergström
2012-11-27 23:00 ` Dave Airlie
[not found] ` <CAPM=9tz=_0Drx3=Me3EQdPgBvYVGzs6Gnqaw6RBaTLsCG24RAg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-11-28 13:17 ` Terje Bergström
[not found] ` <50B60EFF.1050703-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-28 13:33 ` Lucas Stach
2012-11-28 13:57 ` Terje Bergström
2012-11-28 14:06 ` Lucas Stach
2012-11-28 14:45 ` Terje Bergström
[not found] ` <50B6237B.8010808-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-28 15:13 ` Lucas Stach
2012-11-28 16:23 ` Terje Bergström
[not found] ` <50B63A70.8020107-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-28 18:46 ` Lucas Stach
2012-11-29 8:17 ` Terje Bergström
[not found] ` <50B71A28.5060807-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-11-29 9:09 ` Lucas Stach
2012-11-29 12:14 ` Thierry Reding
2012-11-30 7:44 ` Terje Bergström
2012-11-30 7:53 ` Lucas Stach
2012-11-29 13:36 ` Terje Bergström
2012-11-28 16:24 ` Stephen Warren
2012-11-28 20:53 ` Thomas Hellstrom
2012-12-03 9:30 ` Mark Zhang
2012-12-03 9:40 ` Daniel Vetter
[not found] ` <CAKMK7uF-sQ-HzA2Zek4VzWky=69LA3JqJR_+kyRQEO-JgwPQXQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-12-04 1:49 ` Mark Zhang
2012-11-29 7:37 ` [RFC,v2,8/8] " Mark Zhang
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