Hans,

For davinci drivers, I will be able to do this for vpfe_capture driver
(DM355/6446/365). For DM6467, will someone from your company be able
to take care of this?

Murali

On Sat, Dec 18, 2010 at 6:31 AM, Hans Verkuil <hverk...@xs4all.nl> wrote:
> Hi all,
>
> Now that the BKL patch series has been merged in 2.6.37 it is time to work
> on replacing .ioctl by .unlocked_ioctl in all v4l drivers.
>
> I've made an inventory of all drivers that still use .ioctl and I am looking
> for volunteers to tackle one or more drivers.
>
> I have CCed this email to the maintainers of the various drivers (if I know
> who it is) in the hope that we can get this conversion done as quickly as
> possible.
>
> If I have added your name to a driver, then please confirm if you are able to
> work on it or not. If you can't work on it, but you know someone else, then
> let me know as well.
>
> There is also a list of drivers where I do not know who can do the conversion.
> If you can tackle one or more of those, please respond. Unfortunately, those
> are among the hardest to convert :-(
>
> It would be great if we can tackle most of these drivers for 2.6.38. I think
> we should finish all drivers for 2.6.39 at the latest.
>
> There are two ways of doing the conversion: one is to do all the locking 
> within
> the driver, the other is to use core-assisted locking. How to do the 
> core-assisted
> locking is described in Documentation/video4linux/v4l2-framework.txt, but I'll
> repeat the relevant part here:
>
> v4l2_file_operations and locking
> --------------------------------
>
> You can set a pointer to a mutex_lock in struct video_device. Usually this
> will be either a top-level mutex or a mutex per device node. If you want
> finer-grained locking then you have to set it to NULL and do you own locking.
>
> If a lock is specified then all file operations will be serialized on that
> lock. If you use videobuf then you must pass the same lock to the videobuf
> queue initialize function: if videobuf has to wait for a frame to arrive, then
> it will temporarily unlock the lock and relock it afterwards. If your driver
> also waits in the code, then you should do the same to allow other processes
> to access the device node while the first process is waiting for something.
>
> The implementation of a hotplug disconnect should also take the lock before
> calling v4l2_device_disconnect.
>
>
> Driver list:
>
> saa7146 (Hans Verkuil)
> mem2mem_testdev (Pawel Osciak or Marek Szyprowski)
> cx23885 (Steve Toth)
> cx18-alsa (Andy Walls)
> omap24xxcam (Sakari Ailus or David Cohen)
> au0828 (Janne Grunau)
> cpia2 (Andy Walls or Hans Verkuil)
> cx231xx (Mauro Carvalho Chehab)
> davinci (Muralidharan Karicheri)
> saa6588 (Hans Verkuil)
> pvrusb2 (Mike Isely)
> usbvision (Hans Verkuil)
> s5p-fimc (Sylwester Nawrocki)
> fsl-viu (Anatolij Gustschin)
> tlg2300 (Mauro Carvalho Chehab)
> zr364xx (Hans de Goede)
> soc_camera (Guennadi Liakhovetski)
> usbvideo/vicam (Hans de Goede)
> s2255drv (Pete Eberlein)
> bttv (Mauro Carvalho Chehab)
> stk-webcam (Hans de Goede)
> se401 (Hans de Goede)
> si4713-i2c (Hans Verkuil)
> dsbr100 (Hans Verkuil)
>
> Staging driver list:
>
> go7007 (Pete Eberlein)
> tm6000 (Mauro Carvalho Chehab)
> (stradis/cpia: will be removed in 2.6.38, so no need to do anything)
>
> Unassigned drivers:
>
> saa7134
> em28xx
> cx88
> solo6x10 (staging driver)
>
> Regards,
>
>        Hans
>
> --
> Hans Verkuil - video4linux developer - sponsored by Cisco
> --
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-- 
Murali Karicheri
mkarich...@gmail.com
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