[v3] media: ir-kbd-i2c: convert to i2c_new_dummy_device()

Commit Message

Wolfram Sang Aug. 8, 2019, 3:53 p.m. UTC

Convert this driver to use the new i2c_new_dummy_device() call and bail
out if the dummy device cannot be registered to make failure more
visible to the user.

Signed-off-by: Wolfram Sang <[e-mail]>
---

Change since v2: move away from devm per Mauro's suggestion

Note: i2c_unregister_device() is NULL pointer aware so we can skip the
if in the last block.

 drivers/media/i2c/ir-kbd-i2c.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

Patch

diff --git a/drivers/media/i2c/ir-kbd-i2c.c b/drivers/media/i2c/ir-kbd-i2c.c
index 96932779ca37..e8119ad0bc71 100644
--- a/drivers/media/i2c/ir-kbd-i2c.c
+++ b/drivers/media/i2c/ir-kbd-i2c.c
@@ -885,9 +885,11 @@  static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	INIT_DELAYED_WORK(&ir->work, ir_work);
 
 	if (probe_tx) {
-		ir->tx_c = i2c_new_dummy(client->adapter, 0x70);
-		if (!ir->tx_c) {
+		ir->tx_c = i2c_new_dummy_device(client->adapter, 0x70);
+		if (IS_ERR(ir->tx_c)) {
 			dev_err(&client->dev, "failed to setup tx i2c address");
+			err = PTR_ERR(ir->tx_c);
+			goto err_out_free;
 		} else if (!zilog_init(ir)) {
 			ir->carrier = 38000;
 			ir->duty_cycle = 40;
@@ -904,7 +906,7 @@  static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	return 0;
 
  err_out_free:
-	if (ir->tx_c)
+	if (!IS_ERR(ir->tx_c))
 		i2c_unregister_device(ir->tx_c);
 
 	/* Only frees rc if it were allocated internally */
@@ -918,8 +920,7 @@  static int ir_remove(struct i2c_client *client)
 
 	cancel_delayed_work_sync(&ir->work);
 
-	if (ir->tx_c)
-		i2c_unregister_device(ir->tx_c);
+	i2c_unregister_device(ir->tx_c);
 
 	rc_unregister_device(ir->rc);