[PATCH] [media] au0828: Cache the decoder info at au0828 dev structure

[Mauro Carvalho Chehab]

Instead of seeking for the decoder every time analog stream is
started, cache it.

Requested-by: Hans Verkuil <hverk...@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mche...@osg.samsung.com>

diff --git a/drivers/media/usb/au0828/au0828-cards.c 
b/drivers/media/usb/au0828/au0828-cards.c
index 6b469e8c4c6e..f7337dbbc59f 100644
--- a/drivers/media/usb/au0828/au0828-cards.c
+++ b/drivers/media/usb/au0828/au0828-cards.c
@@ -228,6 +228,10 @@ void au0828_card_analog_fe_setup(struct au0828_dev *dev)
                                "au8522", 0x8e >> 1, NULL);
                if (sd == NULL)
                        pr_err("analog subdev registration failed\n");
+#if CONFIG_MEDIA_CONTROLLER
+               if (sd)
+                       dev->decoder = &sd->entity;
+#endif
        }
 
        /* Setup tuners */
diff --git a/drivers/media/usb/au0828/au0828-video.c 
b/drivers/media/usb/au0828/au0828-video.c
index 4ebe13673adf..939b2ad73501 100644
--- a/drivers/media/usb/au0828/au0828-video.c
+++ b/drivers/media/usb/au0828/au0828-video.c
@@ -641,11 +641,11 @@ static int au0828_enable_analog_tuner(struct au0828_dev 
*dev)
 {
 #ifdef CONFIG_MEDIA_CONTROLLER
        struct media_device *mdev = dev->media_dev;
-       struct media_entity  *entity, *decoder = NULL, *source;
+       struct media_entity  *entity, *source;
        struct media_link *link, *found_link = NULL;
        int i, ret, active_links = 0;
 
-       if (!mdev)
+       if (!mdev || !dev->decoder)
                return 0;
 
        /*
@@ -655,18 +655,9 @@ static int au0828_enable_analog_tuner(struct au0828_dev 
*dev)
         * do DVB streaming while the DMA engine is being used for V4L2,
         * this should be enough for the actual needs.
         */
-       media_device_for_each_entity(entity, mdev) {
-               if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) {
-                       decoder = entity;
-                       break;
-               }
-       }
-       if (!decoder)
-               return 0;
-
-       for (i = 0; i < decoder->num_links; i++) {
-               link = &decoder->links[i];
-               if (link->sink->entity == decoder) {
+       for (i = 0; i < dev->decoder->num_links; i++) {
+               link = &dev->decoder->links[i];
+               if (link->sink->entity == dev->decoder) {
                        found_link = link;
                        if (link->flags & MEDIA_LNK_FL_ENABLED)
                                active_links++;
diff --git a/drivers/media/usb/au0828/au0828.h 
b/drivers/media/usb/au0828/au0828.h
index 7e6a3bbc68ab..d3644b3fe6fa 100644
--- a/drivers/media/usb/au0828/au0828.h
+++ b/drivers/media/usb/au0828/au0828.h
@@ -280,6 +280,7 @@ struct au0828_dev {
 #ifdef CONFIG_MEDIA_CONTROLLER
        struct media_device *media_dev;
        struct media_pad video_pad, vbi_pad;
+       struct media_entity *decoder;
 #endif
 };
 
-- 
2.4.3

--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html