diff options
Diffstat (limited to 'drivers/media/video/cx25840/cx25840-core.c')
| -rw-r--r-- | drivers/media/video/cx25840/cx25840-core.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c index 1556e2fad4c1..6d2ca822a638 100644 --- a/drivers/media/video/cx25840/cx25840-core.c +++ b/drivers/media/video/cx25840/cx25840-core.c @@ -1078,6 +1078,10 @@ static int cx25840_probe(struct i2c_client *client) u32 id; u16 device_id; + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EIO; + v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", client->addr << 1); device_id = cx25840_read(client, 0x101) << 8; @@ -1093,7 +1097,7 @@ static int cx25840_probe(struct i2c_client *client) } else { v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n"); - return 0; + return -ENODEV; } state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL); |