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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2007-09-16 10:47:15 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-01-25 19:01:27 -0200 |
| commit | 188f3457c21ac7869005021b56b4578293c644bb (patch) | |
| tree | 7002562a01698d2fa6070f1547e609f9b29cb163 /drivers/media/video/cx25840 | |
| parent | 6235168db8ed96c587e566be0dd72a77ca212693 (diff) | |
| download | linux-188f3457c21ac7869005021b56b4578293c644bb.tar.bz2 | |
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/cx25840')
| -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); |