i2c: i2c-cadence: Initialize configuration before probing devices

The cadence I2C driver calls cdns_i2c_writereg(..) to setup a workaround
in the controller, but did so after calling i2c_add_adapter() which starts
probing devices on the bus. Change the order so that the configuration is
completely finished before using the adapter.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/busses/i2c-cadence.c b/drivers/i2c/busses/i2c-cadence.c
index 6869712..45d6771 100644 (file)
--- a/drivers/i2c/busses/i2c-cadence.c
+++ b/drivers/i2c/busses/i2c-cadence.c
@@ -962,10 +962,6 @@ static int cdns_i2c_probe(struct platform_device *pdev)
                goto err_clk_dis;
        }
 
-       ret = i2c_add_adapter(&id->adap);
-       if (ret < 0)
-               goto err_clk_dis;
-
        /*
         * Cadence I2C controller has a bug wherein it generates
         * invalid read transaction after HW timeout in master receiver mode.
@@ -975,6 +971,10 @@ static int cdns_i2c_probe(struct platform_device *pdev)
         */
        cdns_i2c_writereg(CDNS_I2C_TIMEOUT_MAX, CDNS_I2C_TIME_OUT_OFFSET);
 
+       ret = i2c_add_adapter(&id->adap);
+       if (ret < 0)
+               goto err_clk_dis;
+
        dev_info(&pdev->dev, "%u kHz mmio %08lx irq %d\n",
                 id->i2c_clk / 1000, (unsigned long)r_mem->start, id->irq);