From: Lad, Prabhakar <prabhakar....@ti.com>

for da850/omap-l138, there is no need to setup_input_channel_mode()
and set_clock(), to avoid adding dummy code in board file just returning
zero add a check in the driver itself to call the handler only if its
not NULL.

Signed-off-by: Lad, Prabhakar <prabhakar....@ti.com>
Signed-off-by: Manjunath Hadli <manjunath.ha...@ti.com>
Acked-by: Hans Verkuil <hans.verk...@cisco.com>
Cc: Mauro Carvalho Chehab <mche...@infradead.org>
---
 Changes for v2:
 1: Added patch description, pointed by Mauro.

 drivers/media/platform/davinci/vpif_capture.c |   13 +++++++------
 drivers/media/platform/davinci/vpif_display.c |   13 +++++++------
 2 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/drivers/media/platform/davinci/vpif_capture.c 
b/drivers/media/platform/davinci/vpif_capture.c
index 13aa46d..7b5e09a 100644
--- a/drivers/media/platform/davinci/vpif_capture.c
+++ b/drivers/media/platform/davinci/vpif_capture.c
@@ -311,12 +311,13 @@ static int vpif_start_streaming(struct vb2_queue *vq, 
unsigned int count)
        }
 
        /* configure 1 or 2 channel mode */
-       ret = vpif_config_data->setup_input_channel_mode
-                                       (vpif->std_info.ycmux_mode);
-
-       if (ret < 0) {
-               vpif_dbg(1, debug, "can't set vpif channel mode\n");
-               return ret;
+       if (vpif_config_data->setup_input_channel_mode) {
+               ret = vpif_config_data->
+                       setup_input_channel_mode(vpif->std_info.ycmux_mode);
+               if (ret < 0) {
+                       vpif_dbg(1, debug, "can't set vpif channel mode\n");
+                       return ret;
+               }
        }
 
        /* Call vpif_set_params function to set the parameters and addresses */
diff --git a/drivers/media/platform/davinci/vpif_display.c 
b/drivers/media/platform/davinci/vpif_display.c
index e401aea..e8a0286 100644
--- a/drivers/media/platform/davinci/vpif_display.c
+++ b/drivers/media/platform/davinci/vpif_display.c
@@ -280,12 +280,13 @@ static int vpif_start_streaming(struct vb2_queue *vq, 
unsigned int count)
        }
 
        /* clock settings */
-       ret =
-           vpif_config_data->set_clock(ch->vpifparams.std_info.ycmux_mode,
-                                       ch->vpifparams.std_info.hd_sd);
-       if (ret < 0) {
-               vpif_err("can't set clock\n");
-               return ret;
+       if (vpif_config_data->set_clock) {
+               ret = vpif_config_data->set_clock(ch->vpifparams.std_info.
+               ycmux_mode, ch->vpifparams.std_info.hd_sd);
+               if (ret < 0) {
+                       vpif_err("can't set clock\n");
+                       return ret;
+               }
        }
 
        /* set the parameters and addresses */
-- 
1.7.4.1

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