[PATCH 3/3] media: i2c: adv7180: Print the chip ID on probe

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Improve the probe message by printing the chip ID version.

Signed-off-by: Fabio Estevam <festevam@xxxxxxxxx>
---
 drivers/media/i2c/adv7180.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index 2811f2c337fa..e5ef99f0460c 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -1404,11 +1404,19 @@ static int adv7180_probe(struct i2c_client *client,
 	if (ret)
 		goto err_free_irq;
 
-	v4l_info(client, "chip found @ 0x%02x (%s)\n",
-		 client->addr, client->adapter->name);
+	mutex_lock(&state->mutex);
+	ret = adv7180_read(state, ADV7180_REG_IDENT);
+	mutex_unlock(&state->mutex);
+	if (ret < 0)
+		goto err_v4l2_async_unregister;
+
+	v4l_info(client, "chip id 0x%x found @ 0x%02x (%s)\n",
+		 ret, client->addr, client->adapter->name);
 
 	return 0;
 
+err_v4l2_async_unregister:
+	v4l2_async_unregister_subdev(sd);
 err_free_irq:
 	if (state->irq > 0)
 		free_irq(client->irq, state);
-- 
2.25.1




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