[media] gspca: Add support for control events

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index ed33a8773f7e..9fe723c6acb4 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -40,6 +40,7 @@
 #include <media/v4l2-ioctl.h>
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
 
 #include "gspca.h"
 
@@ -2158,6 +2159,7 @@ static unsigned int dev_poll(struct file *file, poll_table *wait)
                 ret = POLLIN | POLLRDNORM;      /* yes */
         else
                 ret = 0;
+        ret |= v4l2_ctrl_poll(file, wait);
         mutex_unlock(&gspca_dev->queue_lock);
         if (!gspca_dev->present)
                 return POLLHUP;
@@ -2269,6 +2271,8 @@ static const struct v4l2_ioctl_ops dev_ioctl_ops = {
         .vidioc_s_register      = vidioc_s_register,
 #endif
         .vidioc_g_chip_ident    = vidioc_g_chip_ident,
+        .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+        .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 };
 
 static const struct video_device gspca_template = {