build: Added temporarily v4.9_uvcvideo_ktime_conversion.patch

  From: Jasmin Jessich <jasmin@anw.at>

Due the delay with merging patches to media_tree, add the mentioned
patch temporarily to backports. Once this patch is merged to media_tree,
revert this patch.

Signed-off-by: Jasmin Jessich <jasmin@anw.at>
---
 backports/backports.txt                        |  1 +
 backports/v4.9_uvcvideo_ktime_conversion.patch | 42 ++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 backports/v4.9_uvcvideo_ktime_conversion.patch
  

Hi!

I tested to build with Kernel 4.14.17 and 4.4 and this worked.
Kernel 3.17 is currently not working, but I would like to wait with fixes
for Kernel 3.x after this patch has been applied to media_build.

BR,
   Jasmin
  

On 02/04/2018 11:33 PM, Jasmin J. wrote:
> From: Jasmin Jessich <jasmin@anw.at>
> 
> Due the delay with merging patches to media_tree, add the mentioned
> patch temporarily to backports. Once this patch is merged to media_tree,
> revert this patch.

Merged!

Please notify me when I can revert this patch, just in case I forget.

Regards,

	Hans

> 
> Signed-off-by: Jasmin Jessich <jasmin@anw.at>
> ---
>  backports/backports.txt                        |  1 +
>  backports/v4.9_uvcvideo_ktime_conversion.patch | 42 ++++++++++++++++++++++++++
>  2 files changed, 43 insertions(+)
>  create mode 100644 backports/v4.9_uvcvideo_ktime_conversion.patch
> 
> diff --git a/backports/backports.txt b/backports/backports.txt
> index c30ccf0..c148a75 100644
> --- a/backports/backports.txt
> +++ b/backports/backports.txt
> @@ -43,6 +43,7 @@ add v4.10_refcount.patch
>  add v4.9_mm_address.patch
>  add v4.9_dvb_net_max_mtu.patch
>  add v4.9_ktime_cleanups.patch
> +add v4.9_uvcvideo_ktime_conversion.patch
>  
>  [4.8.255]
>  add v4.8_user_pages_flag.patch
> diff --git a/backports/v4.9_uvcvideo_ktime_conversion.patch b/backports/v4.9_uvcvideo_ktime_conversion.patch
> new file mode 100644
> index 0000000..2f56541
> --- /dev/null
> +++ b/backports/v4.9_uvcvideo_ktime_conversion.patch
> @@ -0,0 +1,42 @@
> +From fb650b38998f5f84d6f35e52aefd1baec2f54b39 Mon Sep 17 00:00:00 2001
> +From: Jasmin Jessich <jasmin@anw.at>
> +Date: Sun, 14 Jan 2018 10:11:08 +0000
> +Subject: [PATCH] media: uvcvideo: Fixed ktime_t to ns conversion
> +
> +Commit 828ee8c71950 ("media: uvcvideo: Use ktime_t for timestamps")
> +changed to use ktime_t for timestamps. Older Kernels use a struct for
> +ktime_t, which requires the conversion function ktime_to_ns to be used on
> +some places. With this patch it will compile now also for older Kernel
> +versions.
> +
> +Signed-off-by: Jasmin Jessich <jasmin@anw.at>
> +---
> + drivers/media/usb/uvc/uvc_video.c | 5 +++--
> + 1 file changed, 3 insertions(+), 2 deletions(-)
> +
> +diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
> +index 5441553..1670aeb 100644
> +--- a/drivers/media/usb/uvc/uvc_video.c
> ++++ b/drivers/media/usb/uvc/uvc_video.c
> +@@ -1009,7 +1009,7 @@ static int uvc_video_decode_start(struct uvc_streaming *stream,
> + 
> + 		buf->buf.field = V4L2_FIELD_NONE;
> + 		buf->buf.sequence = stream->sequence;
> +-		buf->buf.vb2_buf.timestamp = uvc_video_get_time();
> ++		buf->buf.vb2_buf.timestamp = ktime_to_ns(uvc_video_get_time());
> + 
> + 		/* TODO: Handle PTS and SCR. */
> + 		buf->state = UVC_BUF_STATE_ACTIVE;
> +@@ -1191,7 +1191,8 @@ static void uvc_video_decode_meta(struct uvc_streaming *stream,
> + 
> + 	uvc_trace(UVC_TRACE_FRAME,
> + 		  "%s(): t-sys %lluns, SOF %u, len %u, flags 0x%x, PTS %u, STC %u frame SOF %u\n",
> +-		  __func__, time, meta->sof, meta->length, meta->flags,
> ++		  __func__, ktime_to_ns(time), meta->sof, meta->length,
> ++		  meta->flags,
> + 		  has_pts ? *(u32 *)meta->buf : 0,
> + 		  has_scr ? *(u32 *)scr : 0,
> + 		  has_scr ? *(u32 *)(scr + 4) & 0x7ff : 0);
> +-- 
> +2.7.4
> +
>