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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2009-05-23 23:18:40 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-05-23 23:18:40 +0100 |
| commit | fc05505b77f7900a1bb74fb3f3a4343dee4265a4 (patch) | |
| tree | 6517919cb60bd9465078512cacbefd8c77f94b76 /drivers/i2c/algos/i2c-algo-pca.c | |
| parent | a2ab67fae1ab9226679495a8d260f4e6555efc5f (diff) | |
| parent | 11c79740d3c03cb81f84e98cf2e2dbd8d9bb53cd (diff) | |
Merge branch 'ixp4xx' of git://git.kernel.org/pub/scm/linux/kernel/git/chris/linux-2.6 into devel
Diffstat (limited to 'drivers/i2c/algos/i2c-algo-pca.c')
| -rw-r--r-- | drivers/i2c/algos/i2c-algo-pca.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c index 6318f7ddc1d4..78d42aae0089 100644 --- a/drivers/i2c/algos/i2c-algo-pca.c +++ b/drivers/i2c/algos/i2c-algo-pca.c @@ -287,10 +287,21 @@ static int pca_xfer(struct i2c_adapter *i2c_adap, case 0x30: /* Data byte in I2CDAT has been transmitted; NOT ACK has been received */ DEB2("NOT ACK received after data byte\n"); + pca_stop(adap); goto out; case 0x38: /* Arbitration lost during SLA+W, SLA+R or data bytes */ DEB2("Arbitration lost\n"); + /* + * The PCA9564 data sheet (2006-09-01) says "A + * START condition will be transmitted when the + * bus becomes free (STOP or SCL and SDA high)" + * when the STA bit is set (p. 11). + * + * In case this won't work, try pca_reset() + * instead. + */ + pca_start(adap); goto out; case 0x58: /* Data byte has been received; NOT ACK has been returned */ |