diff options
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-fileops.c')
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-fileops.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/media/video/ivtv/ivtv-fileops.c b/drivers/media/video/ivtv/ivtv-fileops.c index f2fa434b677b..7ec5c99f9ad1 100644 --- a/drivers/media/video/ivtv/ivtv-fileops.c +++ b/drivers/media/video/ivtv/ivtv-fileops.c @@ -582,12 +582,25 @@ ssize_t ivtv_v4l2_write(struct file *filp, const char __user *user_buf, size_t c ivtv_queue_init(&q); set_bit(IVTV_F_S_APPL_IO, &s->s_flags); + /* Start decoder (returns 0 if already started) */ + mutex_lock(&itv->serialize_lock); + rc = ivtv_start_decoding(id, itv->speed); + mutex_unlock(&itv->serialize_lock); + if (rc) { + IVTV_DEBUG_WARN("Failed start decode stream %s\n", s->name); + + /* failure, clean up */ + clear_bit(IVTV_F_S_STREAMING, &s->s_flags); + clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); + return rc; + } + retry: /* If possible, just DMA the entire frame - Check the data transfer size since we may get here before the stream has been fully set-up */ if (mode == OUT_YUV && s->q_full.length == 0 && itv->dma_data_req_size) { while (count >= itv->dma_data_req_size) { - if (!ivtv_yuv_udma_stream_frame (itv, (void *)user_buf)) { + if (!ivtv_yuv_udma_stream_frame (itv, (void __user *)user_buf)) { bytes_written += itv->dma_data_req_size; user_buf += itv->dma_data_req_size; count -= itv->dma_data_req_size; @@ -664,18 +677,6 @@ retry: ivtv_enqueue(s, buf, &s->q_full); } - /* Start decoder (returns 0 if already started) */ - mutex_lock(&itv->serialize_lock); - rc = ivtv_start_decoding(id, itv->speed); - mutex_unlock(&itv->serialize_lock); - if (rc) { - IVTV_DEBUG_WARN("Failed start decode stream %s\n", s->name); - - /* failure, clean up */ - clear_bit(IVTV_F_S_STREAMING, &s->s_flags); - clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); - return rc; - } if (test_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags)) { if (s->q_full.length >= itv->dma_data_req_size) { int got_sig; |