i2c: Set a default timeout value for all adapters

Setting a default timeout value on a per-algo basis doesn't make any
sense. Move the default value setting to i2c-core. Individual adapter
drivers can specify a different (non-zero) value if they wish.

Also express the timeout value in a way which results in the same
duration regarless of the value of HZ.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 456caa8..e361033 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -459,6 +459,11 @@
 		pr_debug("I2C adapter driver [%s] forgot to specify "
 			 "physical device\n", adap->name);
 	}
+
+	/* Set default timeout to 1 second if not already set */
+	if (adap->timeout == 0)
+		adap->timeout = HZ;
+
 	dev_set_name(&adap->dev, "i2c-%d", adap->nr);
 	adap->dev.release = &i2c_adapter_dev_release;
 	adap->dev.class = &i2c_adapter_class;