Use an enum to better document the media pads.

No functional changes.

Suggested-by: Prabhakar Lad <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

diff --git a/drivers/media/i2c/cx25840/cx25840-core.c 
b/drivers/media/i2c/cx25840/cx25840-core.c
index 185cb55253c9..bd496447749a 100644
--- a/drivers/media/i2c/cx25840/cx25840-core.c
+++ b/drivers/media/i2c/cx25840/cx25840-core.c
@@ -5196,9 +5196,9 @@ static int cx25840_probe(struct i2c_client *client,
         * However, at least for now, there's no much gain on modelling
         * those extra inputs. So, let's add it only when needed.
         */
-       state->pads[0].flags = MEDIA_PAD_FL_SINK;       /* Tuner or input */
-       state->pads[1].flags = MEDIA_PAD_FL_SOURCE;     /* Video */
-       state->pads[2].flags = MEDIA_PAD_FL_SOURCE;     /* VBI */
+       state->pads[CX25840_PAD_INPUT].flags = MEDIA_PAD_FL_SINK;
+       state->pads[CX25840_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE;
+       state->pads[CX25840_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE;
        sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
 
        ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads),
diff --git a/drivers/media/i2c/cx25840/cx25840-core.h 
b/drivers/media/i2c/cx25840/cx25840-core.h
index 17b409f55445..fdea48ce0c03 100644
--- a/drivers/media/i2c/cx25840/cx25840-core.h
+++ b/drivers/media/i2c/cx25840/cx25840-core.h
@@ -41,6 +41,14 @@ enum cx25840_model {
        CX25837,
 };
 
+enum cx25840_media_pads {
+       CX25840_PAD_INPUT,
+       CX25840_PAD_VID_OUT,
+       CX25840_PAD_VBI_OUT,
+
+       CX25840_NUM_PADS
+};
+
 struct cx25840_state {
        struct i2c_client *c;
        struct v4l2_subdev sd;
@@ -65,7 +73,7 @@ struct cx25840_state {
        struct work_struct fw_work;   /* work entry for fw load */
        struct cx25840_ir_state *ir_state;
 #if defined(CONFIG_MEDIA_CONTROLLER)
-       struct media_pad        pads[3];
+       struct media_pad        pads[CX25840_NUM_PADS];
 #endif
 };
 
-- 
2.1.0

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