i2c: altera: use proper variable to hold errno

device_property_read_u32() returns errno or 0, so we should use the
integer variable 'ret' and not the u32 'val' to hold the retval.

Fixes: 0560ad576268 ("i2c: altera: Add Altera I2C Controller driver")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/busses/i2c-altera.c b/drivers/i2c/busses/i2c-altera.c
index 20ef638..f5c00f9 100644 (file)
--- a/drivers/i2c/busses/i2c-altera.c
+++ b/drivers/i2c/busses/i2c-altera.c
@@ -384,7 +384,6 @@ static int altr_i2c_probe(struct platform_device *pdev)
        struct altr_i2c_dev *idev = NULL;
        struct resource *res;
        int irq, ret;
-       u32 val;
 
        idev = devm_kzalloc(&pdev->dev, sizeof(*idev), GFP_KERNEL);
        if (!idev)
@@ -411,17 +410,17 @@ static int altr_i2c_probe(struct platform_device *pdev)
        init_completion(&idev->msg_complete);
        spin_lock_init(&idev->lock);
 
-       val = device_property_read_u32(idev->dev, "fifo-size",
+       ret = device_property_read_u32(idev->dev, "fifo-size",
                                       &idev->fifo_size);
-       if (val) {
+       if (ret) {
                dev_err(&pdev->dev, "FIFO size set to default of %d\n",
                        ALTR_I2C_DFLT_FIFO_SZ);
                idev->fifo_size = ALTR_I2C_DFLT_FIFO_SZ;
        }
 
-       val = device_property_read_u32(idev->dev, "clock-frequency",
+       ret = device_property_read_u32(idev->dev, "clock-frequency",
                                       &idev->bus_clk_rate);
-       if (val) {
+       if (ret) {
                dev_err(&pdev->dev, "Default to 100kHz\n");
                idev->bus_clk_rate = I2C_MAX_STANDARD_MODE_FREQ;        /* default clock rate */
        }