diff options
Diffstat (limited to 'drivers/i2c/algos')
| -rw-r--r-- | drivers/i2c/algos/i2c-algo-pca.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c index a8e51bd1a4f..9e134fad7bd 100644 --- a/drivers/i2c/algos/i2c-algo-pca.c +++ b/drivers/i2c/algos/i2c-algo-pca.c @@ -22,6 +22,7 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/delay.h> +#include <linux/jiffies.h> #include <linux/init.h> #include <linux/errno.h> #include <linux/i2c.h> @@ -186,14 +187,16 @@ static int pca_xfer(struct i2c_adapter *i2c_adap, int numbytes = 0; int state; int ret; - int timeout = i2c_adap->timeout; + unsigned long timeout = jiffies + i2c_adap->timeout; - while ((state = pca_status(adap)) != 0xf8 && timeout--) { - msleep(10); - } - if (state != 0xf8) { - dev_dbg(&i2c_adap->dev, "bus is not idle. status is %#04x\n", state); - return -EAGAIN; + while (pca_status(adap) != 0xf8) { + if (time_before(jiffies, timeout)) { + msleep(10); + } else { + dev_dbg(&i2c_adap->dev, "bus is not idle. status is " + "%#04x\n", state); + return -EAGAIN; + } } DEB1("{{{ XFER %d messages\n", num); |