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| author | Jean Delvare <khali@linux-fr.org> | 2011-10-30 13:47:25 +0100 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2011-10-30 13:47:25 +0100 |
| commit | 4403988afc0a92b8faf59b46f51d25fafaf0e63d (patch) | |
| tree | 0d3ddd323a5dcbb35e84014b3f33a4380c577dc2 /drivers/i2c/algos | |
| parent | abc01b2718ee1d26e83c4c62c4b79806b3240ac7 (diff) | |
| download | lwn-4403988afc0a92b8faf59b46f51d25fafaf0e63d.tar.gz lwn-4403988afc0a92b8faf59b46f51d25fafaf0e63d.zip | |
i2c-algo-pca: Return standard fault codes
Adjust i2c-algo-pca to return fault codes compliant with
Documentation/i2c/fault-codes, rather than the undocumented and
vague -EREMOTEIO.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Diffstat (limited to 'drivers/i2c/algos')
| -rw-r--r-- | drivers/i2c/algos/i2c-algo-pca.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c index 4ca9cf9cde73..beb9ffe2564b 100644 --- a/drivers/i2c/algos/i2c-algo-pca.c +++ b/drivers/i2c/algos/i2c-algo-pca.c @@ -196,7 +196,7 @@ static int pca_xfer(struct i2c_adapter *i2c_adap, } else { dev_dbg(&i2c_adap->dev, "bus is not idle. status is " "%#04x\n", state); - return -EAGAIN; + return -EBUSY; } } @@ -224,7 +224,7 @@ static int pca_xfer(struct i2c_adapter *i2c_adap, } curmsg = 0; - ret = -EREMOTEIO; + ret = -EIO; while (curmsg < num) { state = pca_status(adap); @@ -259,6 +259,7 @@ static int pca_xfer(struct i2c_adapter *i2c_adap, case 0x20: /* SLA+W has been transmitted; NOT ACK has been received */ DEB2("NOT ACK received after SLA+W\n"); pca_stop(adap); + ret = -ENXIO; goto out; case 0x40: /* SLA+R has been transmitted; ACK has been received */ @@ -283,6 +284,7 @@ static int pca_xfer(struct i2c_adapter *i2c_adap, case 0x48: /* SLA+R has been transmitted; NOT ACK has been received */ DEB2("NOT ACK received after SLA+R\n"); pca_stop(adap); + ret = -ENXIO; goto out; case 0x30: /* Data byte in I2CDAT has been transmitted; NOT ACK has been received */ |