i2c-gpio: Add support for new-style clients

Use i2c_bit_add_numbered_bus() so that the i2c-gpio adapter works well
with new-style pre-declared devices.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/i2c/busses/i2c-gpio.c b/drivers/i2c/busses/i2c-gpio.c
index a7dd54654a9a..d6dbd6ace21d 100644
--- a/drivers/i2c/busses/i2c-gpio.c
+++ b/drivers/i2c/busses/i2c-gpio.c
@@ -142,7 +142,13 @@ static int __init i2c_gpio_probe(struct platform_device *pdev)
         adap->algo_data = bit_data;
         adap->dev.parent = &pdev->dev;
 
-        ret = i2c_bit_add_bus(adap);
+        /*
+         * If "dev->id" is negative we consider it as zero.
+         * The reason to do so is to avoid sysfs names that only make
+         * sense when there are multiple adapters.
+         */
+        adap->nr = pdev->id >= 0 ? pdev->id : 0;
+        ret = i2c_bit_add_numbered_bus(adap);
         if (ret)
                 goto err_add_bus;