i2c-dev: Clarify the unit of ioctl I2C_TIMEOUT

[pandora-kernel.git] / drivers / i2c / i2c-dev.c

diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index c171988..7e13d2d 100644 (file)
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -35,6 +35,7 @@
 #include <linux/i2c.h>
 #include <linux/i2c-dev.h>
 #include <linux/smp_lock.h>
+#include <linux/jiffies.h>
 #include <asm/uaccess.h>
 
 static struct i2c_driver i2cdev_driver;
@@ -422,7 +423,10 @@ static long i2cdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                client->adapter->retries = arg;
                break;
        case I2C_TIMEOUT:
-               client->adapter->timeout = arg;
+               /* For historical reasons, user-space sets the timeout
+                * value in units of 10 ms.
+                */
+               client->adapter->timeout = msecs_to_jiffies(arg * 10);
                break;
        default:
                /* NOTE:  returning a fault code here could cause trouble