[PATCH 4.14 093/117] i2c: altera: use proper variable to hold errno

[Greg Kroah-Hartman]

From: Wolfram Sang <wsa+rene...@sang-engineering.com>

commit edb2c9dd3948738ef030c32b948543e84f4d3f81 upstream.

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+rene...@sang-engineering.com>
Reviewed-by: Thor Thayer <thor.tha...@linux.intel.com>
Signed-off-by: Wolfram Sang <w...@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/i2c/busses/i2c-altera.c |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

--- a/drivers/i2c/busses/i2c-altera.c
+++ b/drivers/i2c/busses/i2c-altera.c
@@ -395,7 +395,6 @@ static int altr_i2c_probe(struct platfor
        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)
@@ -422,17 +421,17 @@ static int altr_i2c_probe(struct platfor
        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 = 100000;    /* default clock rate */
        }