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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2007-09-16 15:47:15 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-01-25 22:01:27 +0100 |
| commit | 188f3457c21ac7869005021b56b4578293c644bb (patch) | |
| tree | 7002562a01698d2fa6070f1547e609f9b29cb163 /drivers/media/video/wm8739.c | |
| parent | V4L/DVB (6464): tlv320aic23b: convert to bus-based I2C API (diff) | |
| download | linux-188f3457c21ac7869005021b56b4578293c644bb.tar.xz linux-188f3457c21ac7869005021b56b4578293c644bb.zip | |
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>
Diffstat (limited to 'drivers/media/video/wm8739.c')
| -rw-r--r-- | drivers/media/video/wm8739.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/video/wm8739.c b/drivers/media/video/wm8739.c index 459228a5cf50..3d9e709833c5 100644 --- a/drivers/media/video/wm8739.c +++ b/drivers/media/video/wm8739.c @@ -264,6 +264,10 @@ static int wm8739_probe(struct i2c_client *client) { 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); |