linux-kernel - Re: USB mini-summit at LinuxCon Vancouver

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: <20110811105750.179e468a@tele>
Date:	Thu, 11 Aug 2011 10:57:50 +0200
From:	Jean-Francois Moine <moinejf@...e.fr>
To:	Mauro Carvalho Chehab <mchehab@...radead.org>
Cc:	Theodore Kilgore <kilgota@...ach.math.auburn.edu>,
	Alan Stern <stern@...land.harvard.edu>,
	Hans de Goede <hdegoede@...hat.com>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	Greg KH <greg@...ah.com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, libusb-devel@...ts.sourceforge.net,
	Alexander Graf <agraf@...e.de>,
	Gerd Hoffmann <kraxel@...hat.com>, hector@...cansoft.com,
	Jan Kiszka <jan.kiszka@...mens.com>,
	Stefan Hajnoczi <stefanha@...ux.vnet.ibm.com>,
	pbonzini@...hat.com, Anthony Liguori <aliguori@...ibm.com>,
	Jes Sorensen <Jes.Sorensen@...hat.com>,
	Oliver Neukum <oliver@...kum.org>, Felipe Balbi <balbi@...com>,
	Clemens Ladisch <clemens@...isch.de>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Adam Baker <linux@...er-net.org.uk>
Subject: Re: USB mini-summit at LinuxCon Vancouver

On Wed, 10 Aug 2011 17:14:05 -0300
Mauro Carvalho Chehab <mchehab@...radead.org> wrote:

> > -- moving the kernel webcam drivers out of the kernel and doing with these 
> > cameras _everything_ including webcam function through libusb. I myself do 
> > not have the imagination to be able to figure out how this could be done 
> > without a rather humongous amount of work (for example, which streaming 
> > apps that are currently available would be able to live with this?) but 
> > unless I misunderstand what he was saying, Greg K-H seems to think that 
> > this would be the best thing to do.  
> 
> I also don't think that this a good alternative. As Hans V. pointed, one of
> our long term targets is to create per-sensor I2C drivers that are independent
> from the bridges. Also, moving it to userspace would require lots of work
> with the duplication of V4L and gspca core into userspace for the devices
> that would be moved, and may have some performance impacts.

If only gspca subdrivers are concerned, moving them to usespace should
be easy: only the gspca main has to be rewritten, and its best place is
in the v4l library.

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/
--
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/