V4L/DVB (5412): Fix VIDIOC_TRY_ENCODER_CMD and VIDEO_TRY_COMMAND

VIDIOC_TRY_ENCODER_CMD did the same as VIDIOC_ENCODER_CMD, now it no longer
touches the encoder.
Both the encoder and decoder commands did not clear the flags field of unknown
flags.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/media/video/ivtv/ivtv-ioctl.c b/drivers/media/video/ivtv/ivtv-ioctl.c
index 2a4edb150d3e..afb3702ed404 100644
--- a/drivers/media/video/ivtv/ivtv-ioctl.c
+++ b/drivers/media/video/ivtv/ivtv-ioctl.c
@@ -277,6 +277,7 @@ static int ivtv_video_command(struct ivtv *itv, struct ivtv_open_id *id,
 
         switch (vc->cmd) {
         case VIDEO_CMD_PLAY: {
+                vc->flags = 0;
                 vc->play.speed = ivtv_validate_speed(itv->speed, vc->play.speed);
                 if (vc->play.speed < 0)
                         vc->play.format = VIDEO_PLAY_FMT_GOP;
@@ -288,6 +289,7 @@ static int ivtv_video_command(struct ivtv *itv, struct ivtv_open_id *id,
         }
 
         case VIDEO_CMD_STOP:
+                vc->flags &= ~(VIDEO_CMD_STOP_IMMEDIATELY|VIDEO_CMD_STOP_TO_BLACK);
                 if (vc->flags & VIDEO_CMD_STOP_IMMEDIATELY)
                         vc->stop.pts = 0;
                 if (try) break;
@@ -300,6 +302,7 @@ static int ivtv_video_command(struct ivtv *itv, struct ivtv_open_id *id,
                 return ivtv_stop_v4l2_decode_stream(s, vc->flags, vc->stop.pts);
 
         case VIDEO_CMD_FREEZE:
+                vc->flags &= ~VIDEO_CMD_FREEZE_TO_BLACK;
                 if (try) break;
                 if (itv->output_mode != OUT_MPG)
                         return -EBUSY;
@@ -310,6 +313,7 @@ static int ivtv_video_command(struct ivtv *itv, struct ivtv_open_id *id,
                 break;
 
         case VIDEO_CMD_CONTINUE:
+                vc->flags = 0;
                 if (try) break;
                 if (itv->output_mode != OUT_MPG)
                         return -EBUSY;
@@ -1082,15 +1086,25 @@ int ivtv_v4l2_ioctls(struct ivtv *itv, struct file *filp, unsigned int cmd, void
                 struct v4l2_encoder_cmd *enc = arg;
                 int try = cmd == VIDIOC_TRY_ENCODER_CMD;
 
+                memset(&enc->raw, 0, sizeof(enc->raw));
                 switch (enc->cmd) {
                 case V4L2_ENC_CMD_START:
+                        enc->flags = 0;
+                        if (try)
+                                return 0;
                         return ivtv_start_capture(id);
 
                 case V4L2_ENC_CMD_STOP:
+                        enc->flags &= ~V4L2_ENC_CMD_STOP_AT_GOP_END;
+                        if (try)
+                                return 0;
                         ivtv_stop_capture(id, enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
                         return 0;
 
                 case V4L2_ENC_CMD_PAUSE:
+                        enc->flags = 0;
+                        if (try)
+                                return 0;
                         if (!atomic_read(&itv->capturing))
                                 return -EPERM;
                         if (test_and_set_bit(IVTV_F_I_ENC_PAUSED, &itv->i_flags))
@@ -1100,6 +1114,9 @@ int ivtv_v4l2_ioctls(struct ivtv *itv, struct file *filp, unsigned int cmd, void
                         break;
 
                 case V4L2_ENC_CMD_RESUME:
+                        enc->flags = 0;
+                        if (try)
+                                return 0;
                         if (!atomic_read(&itv->capturing))
                                 return -EPERM;
                         if (!test_and_clear_bit(IVTV_F_I_ENC_PAUSED, &itv->i_flags))
@@ -1107,6 +1124,8 @@ int ivtv_v4l2_ioctls(struct ivtv *itv, struct file *filp, unsigned int cmd, void
                         ivtv_vapi(itv, CX2341X_ENC_PAUSE_ENCODER, 1, 1);
                         ivtv_unmute(itv);
                         break;
+                default:
+                        return -EINVAL;
                 }
                 break;
         }