i2c-pxa: Fix adapter number

It turns out that platform_device.id is a "u32" so testing it for being
nonnegative is useless when setting up an i2c adapte.  Instead,
do what the platform_bus code does and test it against the value "-1".

Signed-off-by: Jean Delvare <khali@linux-fr.org>

diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 9d6b790..bb5466b 100644 (file)
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -926,7 +926,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
         * The reason to do so is to avoid sysfs names that only make
         * sense when there are multiple adapters.
         */
-       i2c->adap.nr = dev->id >= 0 ? dev->id : 0;
+       i2c->adap.nr = dev->id != -1 ? dev->id : 0;
 
        ret = i2c_add_numbered_adapter(&i2c->adap);
        if (ret < 0) {