[media] vpif_cap/disp: Cleanup, improved comments

Signed-off-by: Mats Randgaard <mats.randgaard@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Murali Karicheri <mkaricheri@gmail.com>
Acked-by: Vaibhav Hiremath <hvaibhav@ti.com>
Acked-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 13 insertions, 3 deletions

diff --git a/drivers/media/video/davinci/vpif_display.c b/drivers/media/video/davinci/vpif_display.c
index 44a885878ebf..7cb70d916f4b 100644
--- a/drivers/media/video/davinci/vpif_display.c
+++ b/drivers/media/video/davinci/vpif_display.c
@@ -580,7 +580,10 @@ static void vpif_config_addr(struct channel_obj *ch, int muxmode)
 static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
 {
         struct vpif_fh *fh = filep->private_data;
-        struct common_obj *common = &fh->channel->common[VPIF_VIDEO_INDEX];
+        struct channel_obj *ch = fh->channel;
+        struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
+
+        vpif_dbg(2, debug, "vpif_mmap\n");
 
         return videobuf_mmap_mapper(&common->buffer_queue, vma);
 }
@@ -692,7 +695,12 @@ static int vpif_release(struct file *filep)
 }
 
 /* functions implementing ioctls */
-
+/**
+ * vpif_querycap() - QUERYCAP handler
+ * @file: file ptr
+ * @priv: file handle
+ * @cap: ptr to v4l2_capability structure
+ */
 static int vpif_querycap(struct file *file, void  *priv,
                                 struct v4l2_capability *cap)
 {
@@ -1106,7 +1114,7 @@ static int vpif_streamon(struct file *file, void *priv,
         if (ret < 0)
                 return ret;
 
-        /* Call videobuf_streamon to start streaming  in videobuf */
+        /* Call videobuf_streamon to start streaming in videobuf */
         ret = videobuf_streamon(&common->buffer_queue);
         if (ret < 0) {
                 vpif_err("videobuf_streamon\n");
@@ -1873,6 +1881,8 @@ static __init int vpif_probe(struct platform_device *pdev)
                         vpif_obj.sd[i]->grp_id = 1 << i;
         }
 
+        v4l2_info(&vpif_obj.v4l2_dev,
+                        "DM646x VPIF display driver initialized\n");
         return 0;
 
 probe_subdev_out: