V4L/DVB (6465): Use correct error codes when chip is not recognized
If the chip isn't recognized, then the correct errors should be returned.
The v4l2_i2c_attach() utility function will return 0 for all errors
except -ENOMEM to provide proper compatibility support for the old I2C
probing function.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/wm8739.c b/drivers/media/video/wm8739.c
index 459228a..3d9e709 100644
--- a/drivers/media/video/wm8739.c
+++ b/drivers/media/video/wm8739.c
@@ -264,6 +264,10 @@
{
struct wm8739_state *state;
+ /* Check if the adapter supports the needed features */
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
+
v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name);
state = kmalloc(sizeof(struct wm8739_state), GFP_KERNEL);