diff options
| -rw-r--r-- | drivers/i2c/algos/i2c-algo-pcf.c | 17 | ||||
| -rw-r--r-- | include/linux/i2c-algo-pcf.h | 3 |
2 files changed, 16 insertions, 4 deletions
diff --git a/drivers/i2c/algos/i2c-algo-pcf.c b/drivers/i2c/algos/i2c-algo-pcf.c index a8a5b6d1dd88..b8a6f3bcbae3 100644 --- a/drivers/i2c/algos/i2c-algo-pcf.c +++ b/drivers/i2c/algos/i2c-algo-pcf.c @@ -331,13 +331,16 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap, int i; int ret=0, timeout, status; + if (adap->xfer_begin) + adap->xfer_begin(adap->data); /* Check for bus busy */ timeout = wait_for_bb(adap); if (timeout) { DEB2(printk(KERN_ERR "i2c-algo-pcf.o: " "Timeout waiting for BB in pcf_xfer\n");) - return -EIO; + i = -EIO; + goto out; } for (i = 0;ret >= 0 && i < num; i++) { @@ -359,12 +362,14 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap, if (timeout) { if (timeout == -EINTR) { /* arbitration lost */ - return (-EINTR); + i = -EINTR; + goto out; } i2c_stop(adap); DEB2(printk(KERN_ERR "i2c-algo-pcf.o: Timeout waiting " "for PIN(1) in pcf_xfer\n");) - return (-EREMOTEIO); + i = -EREMOTEIO; + goto out; } #ifndef STUB_I2C @@ -372,7 +377,8 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap, if (status & I2C_PCF_LRB) { i2c_stop(adap); DEB2(printk(KERN_ERR "i2c-algo-pcf.o: No LRB(1) in pcf_xfer\n");) - return (-EREMOTEIO); + i = -EREMOTEIO; + goto out; } #endif @@ -404,6 +410,9 @@ static int pcf_xfer(struct i2c_adapter *i2c_adap, } } +out: + if (adap->xfer_end) + adap->xfer_end(adap->data); return (i); } diff --git a/include/linux/i2c-algo-pcf.h b/include/linux/i2c-algo-pcf.h index 5de8a319bf14..0f91a957a690 100644 --- a/include/linux/i2c-algo-pcf.h +++ b/include/linux/i2c-algo-pcf.h @@ -33,6 +33,9 @@ struct i2c_algo_pcf_data { int (*getclock) (void *data); void (*waitforpin) (void *data); + void (*xfer_begin) (void *data); + void (*xfer_end) (void *data); + /* Multi-master lost arbitration back-off delay (msecs) * This should be set by the bus adapter or knowledgable client * if bus is multi-mastered, else zero |