[PATCH] media: allegro: use new v4l2_m2m_ioctl_try_encoder_cmd funcs

[Michael Tretter]

As the try_encoder_cmd is identical for many drivers, there are now
helpers for this function in the mem2mem core. Use the helper in
allegro.

This fixes the v4l2-compliance test regarding V4L2_ENC_CMD_STOP, because
the allegro-specific function rejected invalid flags.

Signed-off-by: Michael Tretter <m.tret...@pengutronix.de>
---
 .../staging/media/allegro-dvt/allegro-core.c  | 22 ++-----------------
 1 file changed, 2 insertions(+), 20 deletions(-)

diff --git a/drivers/staging/media/allegro-dvt/allegro-core.c 
b/drivers/staging/media/allegro-dvt/allegro-core.c
index 20b38b737869..f050c7347fd5 100644
--- a/drivers/staging/media/allegro-dvt/allegro-core.c
+++ b/drivers/staging/media/allegro-dvt/allegro-core.c
@@ -2508,24 +2508,6 @@ static int allegro_s_fmt_vid_out(struct file *file, void 
*fh,
        return 0;
 }
 
-static int allegro_try_encoder_cmd(struct file *file, void *fh,
-                                  struct v4l2_encoder_cmd *cmd)
-{
-       switch (cmd->cmd) {
-       case V4L2_ENC_CMD_START:
-               cmd->flags = 0;
-               break;
-       case V4L2_ENC_CMD_STOP:
-               if (cmd->flags)
-                       return -EINVAL;
-               break;
-       default:
-               return -EINVAL;
-       }
-
-       return 0;
-}
-
 static int allegro_channel_cmd_stop(struct allegro_channel *channel)
 {
        struct allegro_dev *dev = channel->dev;
@@ -2594,7 +2576,7 @@ static int allegro_encoder_cmd(struct file *file, void 
*fh,
        struct allegro_channel *channel = fh_to_channel(fh);
        int err;
 
-       err = allegro_try_encoder_cmd(file, fh, cmd);
+       err = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, cmd);
        if (err)
                return err;
 
@@ -2688,7 +2670,7 @@ static const struct v4l2_ioctl_ops allegro_ioctl_ops = {
        .vidioc_streamon = allegro_ioctl_streamon,
        .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
 
-       .vidioc_try_encoder_cmd = allegro_try_encoder_cmd,
+       .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
        .vidioc_encoder_cmd = allegro_encoder_cmd,
        .vidioc_enum_framesizes = allegro_enum_framesizes,
 
-- 
2.20.1