Re: [RFC PATCH v5 0/8] Refactoring Videobuf2 for common use

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Thank you, Hans.
I attach a temporary patch to fix compile errors below.

Regards,
Junghak



On 09/23/2015 03:53 PM, Hans Verkuil wrote:

The davinci issues are now resolved, but when compiling for i686 I still get
these:

/home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c: In function 'buffer_prepare':
/home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c:301:45: warning: passing argument 1 of 'to_vip_buffer' from incompatible pointer type [-Wincompatible-pointer-types]
   struct vip_buffer *vip_buf = to_vip_buffer(vb);
                                              ^
/home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c:95:34: note: expected 'struct vb2_v4l2_buffer *' but argument is of type 'struct vb2_buffer *'
  static inline struct vip_buffer *to_vip_buffer(struct vb2_v4l2_buffer *vb2)
                                   ^
/home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c: In function 'buffer_queue':
/home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c:318:45: warning: passing argument 1 of 'to_vip_buffer' from incompatible pointer type [-Wincompatible-pointer-types]
   struct vip_buffer *vip_buf = to_vip_buffer(vb);
                                              ^
/home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c:95:34: note: expected 'struct vb2_v4l2_buffer *' but argument is of type 'struct vb2_buffer *'
  static inline struct vip_buffer *to_vip_buffer(struct vb2_v4l2_buffer *vb2)
                                   ^
/home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c: In function 'buffer_finish':
/home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c:334:45: warning: passing argument 1 of 'to_vip_buffer' from incompatible pointer type [-Wincompatible-pointer-types]
   struct vip_buffer *vip_buf = to_vip_buffer(vb);
                                              ^
/home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c:95:34: note: expected 'struct vb2_v4l2_buffer *' but argument is of type 'struct vb2_buffer *'
  static inline struct vip_buffer *to_vip_buffer(struct vb2_v4l2_buffer *vb2)
                                   ^

Regards,

	Hans

On 23-09-15 07:08, Junghak Sung wrote:

Dear Hans,

I tried to make a patch to fix the compile errors below.
If you can not wait for next round, you can resolve
the compile errors below with attached patch file.
But, I'm not sure that this patch can resolve really ALL
compile problems.
So, if you don't mind and if you can,
please, send me your .config file that I can test compile
by using same config file with yours.

Regards,
Junghak


On 09/23/2015 12:09 AM, Hans Verkuil wrote:

Mauro asked if I could make a pull request for patches 1-4, but while compiling
it I got these errors and warnings:

In file included from /home/hans/work/build/media-git/include/linux/interrupt.h:5:0,
                   from /home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.c:18:
/home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.c: In function 'to_vpif_buffer':
/home/hans/work/build/media-git/include/linux/kernel.h:811:48: warning: initialization from incompatible pointer type [-Wincompatible-pointer-types]
    const typeof( ((type *)0)->member ) *__mptr = (ptr); \
                                                  ^
/home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.c:58:9: note: in expansion of macro 'container_of'
    return container_of(vb, struct vpif_disp_buffer, vb);
           ^
/home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.c: In function 'vpif_buffer_prepare':
/home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.c:80:4: error: 'struct vb2_buffer' has no member named 'field'
    vb->field = common->fmt.fmt.pix.field;
      ^
/home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.c: In function 'vpif_start_streaming':
/home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.c:200:39: warning: passing argument 1 of 'vb2_dma_contig_plane_dma_addr' from incompatible pointer type [-Wincompatible-pointer-types]
    addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
                                         ^
In file included from /home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.h:20:0,
                   from /home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.c:26:
/home/hans/work/build/media-git/include/media/videobuf2-dma-contig.h:20:1: note: expected 'struct vb2_buffer *' but argument is of type 'struct vb2_v4l2_buffer *'
   vb2_dma_contig_plane_dma_addr(struct vb2_buffer *vb, unsigned int plane_no)
   ^
/home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.c: In function 'process_progressive_mode':
/home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.c:311:39: warning: passing argument 1 of 'vb2_dma_contig_plane_dma_addr' from incompatible pointer type [-Wincompatible-pointer-types]
    addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
                                         ^
In file included from /home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.h:20:0,
                   from /home/hans/work/build/media-git/drivers/media/platform/davinci/vpif_display.c:26:
/home/hans/work/build/media-git/include/media/videobuf2-dma-contig.h:20:1: note: expected 'struct vb2_buffer *' but argument is of type 'struct vb2_v4l2_buffer *'
   vb2_dma_contig_plane_dma_addr(struct vb2_buffer *vb, unsigned int plane_no)
   ^
/home/hans/work/build/media-git/scripts/Makefile.build:264: recipe for target 'drivers/media/platform/davinci/vpif_display.o' failed

In file included from /home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c:29:0:
/home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c: In function 'to_vip_buffer':
/home/hans/work/build/media-git/include/linux/kernel.h:811:48: warning: initialization from incompatible pointer type [-Wincompatible-pointer-types]
    const typeof( ((type *)0)->member ) *__mptr = (ptr); \
                                                  ^
/home/hans/work/build/media-git/drivers/media/pci/sta2x11/sta2x11_vip.c:97:9: note: in expansion of macro 'container_of'
    return container_of(vb2, struct vip_buffer, vb);
           ^

Please fix!

Thanks,

	Hans

On 22-09-15 15:30, Junghak Sung wrote:

Hello everybody,

This is the 5th round for refactoring Videobuf2(a.k.a VB2).
The purpose of this patch series is to separate existing VB2 framework
into core part and V4L2 specific part. So that not only V4L2 but also other
frameworks can use them to manage buffer and utilize queue.

Why do we try to make the VB2 framework to be common?

As you may know, current DVB framework uses ringbuffer mechanism to demux
MPEG-2 TS data and pass it to userspace. However, this mechanism requires
extra memory copy because DVB framework provides only read() system call for
application - read() system call copies the kernel data to user-space buffer.
So if we can use VB2 framework which supports streaming I/O and buffer
sharing mechanism, then we could enhance existing DVB framework by removing
the extra memory copy - with VB2 framework, application can access the kernel
data directly through mmap system call.

We have a plan for this work as follows:
1. Separate existing VB2 framework into three parts - VB2 common, VB2-v4l2.
     Of course, this change will not affect other v4l2-based
     device drivers. This patch series corresponds to this step.

2. Add and implement new APIs for DVB streaming I/O.
     We can remove unnecessary memory copy between kernel-space and user-space
     by using these new APIs. However, we leaves legacy interfaces as-is
     for backward compatibility.

This patch series is the first step for it.
The previous version of this patch series can be found at belows.

[1] RFC PATCH v1 - http://www.spinics.net/lists/linux-media/msg90688.html
[2] RFC PATCH v2 - http://www.spinics.net/lists/linux-media/msg92130.html
[3] RFC PATCH v3 - http://www.spinics.net/lists/linux-media/msg92953.html
[4] RFC PATCH v4 - http://www.spinics.net/lists/linux-media/msg93421.html

Changes since v4
1. Rebase on 4.3-rc1
Kernel 4.3-rc1 was released. So, this patch set is made based on
that version.

2. Modify queue_setup() argument
In previous patch set, struct v4l2_format, which is a parameter of
queue_setup(), is abstracted by using void pointer. But, it is better way to
pass the parameter with presise meaning than abstracting it.
So, replace void * with struct vb2_format which is newly defined to contain
the format information for common use.

3. Add a code to check if VB2_MAX_* match with VIDEO_MAX_*
Add a check code to videobuf2-v4l2.c where the compiler compares VIDEO_MAX_FRAME
and VB2_MAX_FRAME (and ditto for MAX_PLANES) and throws an #error if they
do not match.

4. Change the commit order
For easier review, the patch that just move things around without doing any
functional change is moved to the last.

All ideas above are from Hans and it seems to be better and right way.


Changes since v3

1. Resolve build errors
In previous patch set, the build errors prevented reviewers from applying
the patch. So, in this patch, I tryed to fix the build errors but I hadn't
the build test on all architectures except for x86 and ARM.

2. Modify descriptions for DocBook
Descriptions not complying with the DocBook rule are modified,
which was pointed out by Mauro.

3. Initialize reserved fields explicitly
The reserved fields of v4l2_buffer are initialized by 0 explicitly
when the vb2_buffer information is returned to userspace,
which was pointed out by Hans.

4. Remove unnecessary type-cast
According to Mauro's advice, the unnecessary type-cast are removed
because it's better for the compiler - rather than human - to check those
things.

5. Sperate the patch - not easy to review - into two patches
In previous patch set, patch 5 was too difficult to review. So accoring to
Hans' opinion, it separated the patch without any functional changes.


Changes since v2

1. Remove v4l2 stuffs completely from vb2_buffer
The v4l2 stuffs - v4l2_buf and v4l2_planes - are removed completely from
struct vb2_buffer. New member variables - index, type, memory - are added
to struct vb2_buffer, all of which can be used commonly. And bytesused,
length, offset, userptr, fd, data_offset are added to struct vb2_plane
for the same reason. So, we can manage video buffer by only using
struct vb2_buffer.
And, v4l2 stuffs - flags, field, timestamp, timecode, sequence - are defined
as member variables of struct vb2_v4l2_buffer.

2. Create new header file for VB2 internal use
videobuf2-internal.h is created, which is referred by videobuf2-core
and videobuf2-v4l2. The header file contains dprintk() for debug,
macro functions to invoke various callbacks, and vb2_core_* function prototypes
referred by inside of videobuf2.

3. Remove buffer-specific callbacks as much as possible
There were many callback functions to handle video buffer information
in previous patch series. In this patch series, I try to remove these callbacks
as much as possible without breaking the existing function flow.
As a result, only four callbacks are remained - fill_user_buffer(),
fill_vb2_buffer(), fill_vb2_timestamp() and is_last().

All ideas above are from Hans and it seems to be better and right way.


Changes since v1

1. Divide patch set into more pieces
v1 was not reviewed normally because the 2/3 patch is failed to send to mailing
list with size problem - over 300kb. So I have divided the patch set into five
pieces and refined them neatly, which was pointed by Hans.

2. Add shell scripts for renaming patch
In case of renaming patch, shell scripts are included inside the body of the
patches by Mauro's advice. 1/5 and 5/5 patches include these scripts, which can
be used by reviewers or maintainers to regenerate big patch file if something
goes wrong during patch apply.

3. Remove dependency on v4l2 from videobuf2
In previous patch set, videobuf2-core uses v4l2-specific stuff as it is.
e.g. enum v4l2_buf_type and enum v4l2_memory. That prevented other frameworks
from using videobuf2 independently and made them forced to include
v4l2-specific stuff.
In this version, these dependent stuffs are replaced with VB2 own stuffs.
e.g. enum vb2_buf_type and enum vb2_memory. So, v4l2-specific header file isn't
required to use videobuf2 in other modules. Please, note that videobuf2 stuffs
will be translated to v4l2-specific stuffs in videobuf2-v4l2.c file for
backward compatibility.

4. Unify duplicated definitions
VB2_DEBUG() is newly defined in videobuf2-core header file in order to unify
duplicated macro functions that invoke callback functions implemented in vb2
backends - i.e., videobuf2-vmalloc and videobuf2-dma-sg - and queue relevant
callbacks of device drivers.
In previous patch set, these macro functions were defined
in both videobuf2-core.c and videobuf2-v4l2.c.


This patch series is based on media_tree.git [5]. I have applied this patches
to my own git [6] for review, and tested this patch series on ubuntu
PC(Intel i7-3770) for x86 system and odroid-xu3(exynos5422) for ARM.

[5] media_tree.git - http://git.linuxtv.org/cgit.cgi/media_tree.git/
[6] jsung/dvb-vb2.git - http://git.linuxtv.org/cgit.cgi/jsung/dvb-vb2.git/
      (branch: vb2-refactoring)

Any suggestions and comments are welcome.

Regards,
Junghak

Junghak Sung (8):
    media: videobuf2: Replace videobuf2-core with videobuf2-v4l2
    media: videobuf2: Restructure vb2_buffer (1/3)
    media: videobuf2: Restructure vb2_buffer (2/3)
    media: videobuf2: Restructure vb2_buffer (3/3)
    media: videobuf2: Change queue_setup argument
    media: videobuf2: Replace v4l2-specific data with vb2 data.
    media: videobuf2: Prepare to divide videobuf2
    media: videobuf2: Move v4l2-specific stuff to videobuf2-v4l2

   drivers/input/touchscreen/sur40.c                  |   28 +-
   drivers/media/dvb-frontends/rtl2832_sdr.c          |   23 +-
   drivers/media/pci/cobalt/cobalt-driver.h           |    6 +-
   drivers/media/pci/cobalt/cobalt-irq.c              |    7 +-
   drivers/media/pci/cobalt/cobalt-v4l2.c             |   26 +-
   drivers/media/pci/cx23885/cx23885-417.c            |   13 +-
   drivers/media/pci/cx23885/cx23885-core.c           |   24 +-
   drivers/media/pci/cx23885/cx23885-dvb.c            |   11 +-
   drivers/media/pci/cx23885/cx23885-vbi.c            |   18 +-
   drivers/media/pci/cx23885/cx23885-video.c          |   29 +-
   drivers/media/pci/cx23885/cx23885.h                |    2 +-
   drivers/media/pci/cx25821/cx25821-video.c          |   32 +-
   drivers/media/pci/cx25821/cx25821.h                |    3 +-
   drivers/media/pci/cx88/cx88-blackbird.c            |   15 +-
   drivers/media/pci/cx88/cx88-core.c                 |    8 +-
   drivers/media/pci/cx88/cx88-dvb.c                  |   13 +-
   drivers/media/pci/cx88/cx88-mpeg.c                 |   14 +-
   drivers/media/pci/cx88/cx88-vbi.c                  |   19 +-
   drivers/media/pci/cx88/cx88-video.c                |   21 +-
   drivers/media/pci/cx88/cx88.h                      |    2 +-
   drivers/media/pci/dt3155/dt3155.c                  |   23 +-
   drivers/media/pci/dt3155/dt3155.h                  |    3 +-
   drivers/media/pci/netup_unidvb/netup_unidvb_core.c |   21 +-
   drivers/media/pci/saa7134/saa7134-core.c           |   14 +-
   drivers/media/pci/saa7134/saa7134-ts.c             |   16 +-
   drivers/media/pci/saa7134/saa7134-vbi.c            |   12 +-
   drivers/media/pci/saa7134/saa7134-video.c          |   23 +-
   drivers/media/pci/saa7134/saa7134.h                |    4 +-
   drivers/media/pci/solo6x10/solo6x10-v4l2-enc.c     |   48 +-
   drivers/media/pci/solo6x10/solo6x10-v4l2.c         |   26 +-
   drivers/media/pci/solo6x10/solo6x10.h              |    4 +-
   drivers/media/pci/sta2x11/sta2x11_vip.c            |   14 +-
   drivers/media/pci/tw68/tw68-video.c                |   28 +-
   drivers/media/pci/tw68/tw68.h                      |    3 +-
   drivers/media/platform/am437x/am437x-vpfe.c        |   41 +-
   drivers/media/platform/am437x/am437x-vpfe.h        |    3 +-
   drivers/media/platform/blackfin/bfin_capture.c     |   34 +-
   drivers/media/platform/coda/coda-bit.c             |  135 +-
   drivers/media/platform/coda/coda-common.c          |   25 +-
   drivers/media/platform/coda/coda-jpeg.c            |    6 +-
   drivers/media/platform/coda/coda.h                 |    8 +-
   drivers/media/platform/coda/trace.h                |   18 +-
   drivers/media/platform/davinci/vpbe_display.c      |   37 +-
   drivers/media/platform/davinci/vpif_capture.c      |   36 +-
   drivers/media/platform/davinci/vpif_capture.h      |    2 +-
   drivers/media/platform/davinci/vpif_display.c      |   28 +-
   drivers/media/platform/davinci/vpif_display.h      |    2 +-
   drivers/media/platform/exynos-gsc/gsc-core.h       |    4 +-
   drivers/media/platform/exynos-gsc/gsc-m2m.c        |   25 +-
   drivers/media/platform/exynos4-is/fimc-capture.c   |   36 +-
   drivers/media/platform/exynos4-is/fimc-core.c      |    2 +-
   drivers/media/platform/exynos4-is/fimc-core.h      |    4 +-
   drivers/media/platform/exynos4-is/fimc-is.h        |    2 +-
   drivers/media/platform/exynos4-is/fimc-isp-video.c |   27 +-
   drivers/media/platform/exynos4-is/fimc-isp-video.h |    2 +-
   drivers/media/platform/exynos4-is/fimc-isp.h       |    4 +-
   drivers/media/platform/exynos4-is/fimc-lite.c      |   29 +-
   drivers/media/platform/exynos4-is/fimc-lite.h      |    4 +-
   drivers/media/platform/exynos4-is/fimc-m2m.c       |   23 +-
   drivers/media/platform/m2m-deinterlace.c           |   25 +-
   drivers/media/platform/marvell-ccic/mcam-core.c    |   49 +-
   drivers/media/platform/marvell-ccic/mcam-core.h    |    2 +-
   drivers/media/platform/mx2_emmaprp.c               |   17 +-
   drivers/media/platform/omap3isp/ispvideo.c         |   27 +-
   drivers/media/platform/omap3isp/ispvideo.h         |    4 +-
   drivers/media/platform/rcar_jpu.c                  |   66 +-
   drivers/media/platform/s3c-camif/camif-capture.c   |   29 +-
   drivers/media/platform/s3c-camif/camif-core.c      |    2 +-
   drivers/media/platform/s3c-camif/camif-core.h      |    4 +-
   drivers/media/platform/s5p-g2d/g2d.c               |   24 +-
   drivers/media/platform/s5p-jpeg/jpeg-core.c        |   34 +-
   drivers/media/platform/s5p-mfc/s5p_mfc.c           |   80 +-
   drivers/media/platform/s5p-mfc/s5p_mfc_common.h    |    4 +-
   drivers/media/platform/s5p-mfc/s5p_mfc_dec.c       |   19 +-
   drivers/media/platform/s5p-mfc/s5p_mfc_enc.c       |   62 +-
   drivers/media/platform/s5p-mfc/s5p_mfc_opr_v5.c    |   46 +-
   drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c    |   33 +-
   drivers/media/platform/s5p-tv/mixer.h              |    4 +-
   drivers/media/platform/s5p-tv/mixer_grp_layer.c    |    2 +-
   drivers/media/platform/s5p-tv/mixer_reg.c          |    2 +-
   drivers/media/platform/s5p-tv/mixer_video.c        |   13 +-
   drivers/media/platform/s5p-tv/mixer_vp_layer.c     |    5 +-
   drivers/media/platform/sh_veu.c                    |   70 +-
   drivers/media/platform/sh_vou.c                    |   37 +-
   drivers/media/platform/soc_camera/atmel-isi.c      |   28 +-
   drivers/media/platform/soc_camera/mx2_camera.c     |   23 +-
   drivers/media/platform/soc_camera/mx3_camera.c     |   41 +-
   drivers/media/platform/soc_camera/rcar_vin.c       |   59 +-
   .../platform/soc_camera/sh_mobile_ceu_camera.c     |   71 +-
   drivers/media/platform/soc_camera/soc_camera.c     |    2 +-
   drivers/media/platform/sti/bdisp/bdisp-v4l2.c      |   29 +-
   drivers/media/platform/ti-vpe/vpe.c                |   44 +-
   drivers/media/platform/vim2m.c                     |   58 +-
   drivers/media/platform/vivid/vivid-core.h          |    4 +-
   drivers/media/platform/vivid/vivid-kthread-cap.c   |   73 +-
   drivers/media/platform/vivid/vivid-kthread-out.c   |   34 +-
   drivers/media/platform/vivid/vivid-sdr-cap.c       |   51 +-
   drivers/media/platform/vivid/vivid-vbi-cap.c       |   45 +-
   drivers/media/platform/vivid/vivid-vbi-out.c       |   25 +-
   drivers/media/platform/vivid/vivid-vid-cap.c       |   35 +-
   drivers/media/platform/vivid/vivid-vid-out.c       |   36 +-
   drivers/media/platform/vsp1/vsp1_rpf.c             |    4 +-
   drivers/media/platform/vsp1/vsp1_video.c           |  135 +-
   drivers/media/platform/vsp1/vsp1_video.h           |    8 +-
   drivers/media/platform/vsp1/vsp1_wpf.c             |    4 +-
   drivers/media/platform/xilinx/xilinx-dma.c         |   32 +-
   drivers/media/platform/xilinx/xilinx-dma.h         |    2 +-
   drivers/media/usb/airspy/airspy.c                  |   26 +-
   drivers/media/usb/au0828/au0828-vbi.c              |   17 +-
   drivers/media/usb/au0828/au0828-video.c            |   49 +-
   drivers/media/usb/au0828/au0828.h                  |    3 +-
   drivers/media/usb/em28xx/em28xx-vbi.c              |   16 +-
   drivers/media/usb/em28xx/em28xx-video.c            |   38 +-
   drivers/media/usb/em28xx/em28xx.h                  |    3 +-
   drivers/media/usb/go7007/go7007-driver.c           |   29 +-
   drivers/media/usb/go7007/go7007-priv.h             |    4 +-
   drivers/media/usb/go7007/go7007-v4l2.c             |   22 +-
   drivers/media/usb/hackrf/hackrf.c                  |   24 +-
   drivers/media/usb/msi2500/msi2500.c                |   19 +-
   drivers/media/usb/pwc/pwc-if.c                     |   35 +-
   drivers/media/usb/pwc/pwc-uncompress.c             |    6 +-
   drivers/media/usb/pwc/pwc.h                        |    4 +-
   drivers/media/usb/s2255/s2255drv.c                 |   29 +-
   drivers/media/usb/stk1160/stk1160-v4l.c            |   17 +-
   drivers/media/usb/stk1160/stk1160-video.c          |   12 +-
   drivers/media/usb/stk1160/stk1160.h                |    4 +-
   drivers/media/usb/usbtv/usbtv-video.c              |   27 +-
   drivers/media/usb/usbtv/usbtv.h                    |    3 +-
   drivers/media/usb/uvc/uvc_queue.c                  |   32 +-
   drivers/media/usb/uvc/uvc_video.c                  |   20 +-
   drivers/media/usb/uvc/uvcvideo.h                   |    6 +-
   drivers/media/v4l2-core/Makefile                   |    4 +-
   drivers/media/v4l2-core/v4l2-ioctl.c               |    2 +-
   drivers/media/v4l2-core/v4l2-mem2mem.c             |   10 +-
   drivers/media/v4l2-core/v4l2-trace.c               |   10 +-
   drivers/media/v4l2-core/vb2-trace.c                |    9 +
   drivers/media/v4l2-core/videobuf2-core.c           | 2040 +++-----------------
   drivers/media/v4l2-core/videobuf2-dma-contig.c     |    2 +-
   drivers/media/v4l2-core/videobuf2-dma-sg.c         |    2 +-
   drivers/media/v4l2-core/videobuf2-internal.h       |  161 ++
   drivers/media/v4l2-core/videobuf2-memops.c         |    2 +-
   drivers/media/v4l2-core/videobuf2-v4l2.c           | 1709 ++++++++++++++++
   drivers/media/v4l2-core/videobuf2-vmalloc.c        |    2 +-
   drivers/staging/media/davinci_vpfe/vpfe_video.c    |   46 +-
   drivers/staging/media/davinci_vpfe/vpfe_video.h    |    3 +-
   drivers/staging/media/omap4iss/iss_video.c         |   25 +-
   drivers/staging/media/omap4iss/iss_video.h         |    6 +-
   drivers/usb/gadget/function/uvc_queue.c            |   28 +-
   drivers/usb/gadget/function/uvc_queue.h            |    4 +-
   include/media/davinci/vpbe_display.h               |    3 +-
   include/media/soc_camera.h                         |    2 +-
   include/media/v4l2-mem2mem.h                       |   11 +-
   include/media/videobuf2-core.h                     |  247 ++-
   include/media/videobuf2-dma-contig.h               |    2 +-
   include/media/videobuf2-dma-sg.h                   |    2 +-
   include/media/videobuf2-dvb.h                      |    8 +-
   include/media/videobuf2-memops.h                   |    2 +-
   include/media/videobuf2-v4l2.h                     |  149 ++
   include/media/videobuf2-vmalloc.h                  |    2 +-
   include/trace/events/v4l2.h                        |   62 +-
   include/trace/events/vb2.h                         |   65 +
   161 files changed, 4310 insertions(+), 3348 deletions(-)
   create mode 100644 drivers/media/v4l2-core/vb2-trace.c
   create mode 100644 drivers/media/v4l2-core/videobuf2-internal.h
   create mode 100644 drivers/media/v4l2-core/videobuf2-v4l2.c
   create mode 100644 include/media/videobuf2-v4l2.h
   create mode 100644 include/trace/events/vb2.h






>From 722c3ca8a3cba0049164195bef086913034197c4 Mon Sep 17 00:00:00 2001
From: Junghak Sung <jh1009.sung@xxxxxxxxxxx>
Date: Wed, 23 Sep 2015 16:38:08 +0900
Subject: [PATCH] media: videobuf2: Fix compile error

Signed-off-by: Junghak Sung <jh1009.sung@xxxxxxxxxxx>
---
 drivers/media/pci/sta2x11/sta2x11_vip.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/media/pci/sta2x11/sta2x11_vip.c b/drivers/media/pci/sta2x11/sta2x11_vip.c
index 83f102e..2f3b94d 100644
--- a/drivers/media/pci/sta2x11/sta2x11_vip.c
+++ b/drivers/media/pci/sta2x11/sta2x11_vip.c
@@ -297,8 +297,9 @@ static int buffer_init(struct vb2_buffer *vb)
 
 static int buffer_prepare(struct vb2_buffer *vb)
 {
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 	struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
-	struct vip_buffer *vip_buf = to_vip_buffer(vb);
+	struct vip_buffer *vip_buf = to_vip_buffer(vbuf);
 	unsigned long size;
 
 	size = vip->format.sizeimage;
@@ -314,8 +315,9 @@ static int buffer_prepare(struct vb2_buffer *vb)
 }
 static void buffer_queue(struct vb2_buffer *vb)
 {
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 	struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
-	struct vip_buffer *vip_buf = to_vip_buffer(vb);
+	struct vip_buffer *vip_buf = to_vip_buffer(vbuf);
 
 	spin_lock(&vip->lock);
 	list_add_tail(&vip_buf->list, &vip->buffer_list);
@@ -330,8 +332,9 @@ static void buffer_queue(struct vb2_buffer *vb)
 }
 static void buffer_finish(struct vb2_buffer *vb)
 {
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 	struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue);
-	struct vip_buffer *vip_buf = to_vip_buffer(vb);
+	struct vip_buffer *vip_buf = to_vip_buffer(vbuf);
 
 	/* Buffer handled, remove it from the list */
 	spin_lock(&vip->lock);
-- 
1.7.9.5
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