diff options
Diffstat (limited to 'drivers/media/video/saa7164/saa7164-encoder.c')
| -rw-r--r-- | drivers/media/video/saa7164/saa7164-encoder.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/media/video/saa7164/saa7164-encoder.c b/drivers/media/video/saa7164/saa7164-encoder.c index e340a6e39dfc..5f73ceded31b 100644 --- a/drivers/media/video/saa7164/saa7164-encoder.c +++ b/drivers/media/video/saa7164/saa7164-encoder.c @@ -1030,6 +1030,14 @@ static ssize_t fops_read(struct file *file, char __user *buffer, int rem, cnt; u8 *p; + port->last_read_msecs_diff = port->last_read_msecs; + port->last_read_msecs = jiffies_to_msecs(jiffies); + port->last_read_msecs_diff = port->last_read_msecs - + port->last_read_msecs_diff; + + saa7164_histogram_update(&port->read_interval, + port->last_read_msecs_diff); + if (*pos) return -ESPIPE; @@ -1114,6 +1122,14 @@ static unsigned int fops_poll(struct file *file, poll_table *wait) struct saa7164_user_buffer *ubuf; unsigned int mask = 0; + port->last_poll_msecs_diff = port->last_poll_msecs; + port->last_poll_msecs = jiffies_to_msecs(jiffies); + port->last_poll_msecs_diff = port->last_poll_msecs - + port->last_poll_msecs_diff; + + saa7164_histogram_update(&port->poll_interval, + port->last_poll_msecs_diff); + if (!video_is_registered(port->v4l_device)) { return -EIO; } |