diff options
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-fileops.c')
-rw-r--r-- | drivers/media/video/ivtv/ivtv-fileops.c | 37 |
1 files changed, 24 insertions, 13 deletions
diff --git a/drivers/media/video/ivtv/ivtv-fileops.c b/drivers/media/video/ivtv/ivtv-fileops.c index 170bef61aa6..5b5d6666fa1 100644 --- a/drivers/media/video/ivtv/ivtv-fileops.c +++ b/drivers/media/video/ivtv/ivtv-fileops.c @@ -258,19 +258,19 @@ static struct ivtv_buffer *ivtv_get_buffer(struct ivtv_stream *s, int non_block, } return buf; } - /* return if file was opened with O_NONBLOCK */ - if (non_block) { - *err = -EAGAIN; - return NULL; - } /* return if end of stream */ if (s->type != IVTV_DEC_STREAM_TYPE_VBI && !test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { - clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); IVTV_DEBUG_INFO("EOS %s\n", s->name); return NULL; } + /* return if file was opened with O_NONBLOCK */ + if (non_block) { + *err = -EAGAIN; + return NULL; + } + /* wait for more data to arrive */ prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE); /* New buffers might have become available before we were added to the waitqueue */ @@ -378,10 +378,20 @@ static ssize_t ivtv_read(struct ivtv_stream *s, char __user *ubuf, size_t tot_co int rc; buf = ivtv_get_buffer(s, non_block, &rc); - if (buf == NULL && rc == -EAGAIN && tot_written) - break; - if (buf == NULL) + /* if there is no data available... */ + if (buf == NULL) { + /* if we got data, then return that regardless */ + if (tot_written) + break; + /* EOS condition */ + if (rc == 0) { + clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); + clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); + ivtv_release_stream(s); + } + /* set errno */ return rc; + } rc = ivtv_copy_buf_to_user(s, buf, ubuf + tot_written, tot_count - tot_written); if (buf != &itv->vbi.sliced_mpeg_buf) { ivtv_enqueue(s, buf, (buf->readpos == buf->bytesused) ? &s->q_free : &s->q_io); @@ -738,10 +748,11 @@ void ivtv_stop_capture(struct ivtv_open_id *id, int gop_end) ivtv_stop_v4l2_encode_stream(s, gop_end); } } - clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); - clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); - - ivtv_release_stream(s); + if (!gop_end) { + clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); + clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); + ivtv_release_stream(s); + } } static void ivtv_stop_decoding(struct ivtv_open_id *id, int flags, u64 pts) |