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i2c: altera: use proper variable to hold errno

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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: 0560ad5762 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wolfram Sang 2020-03-27 23:28:26 +01:00 committed by Greg Kroah-Hartman
parent db2426f86d
commit 6cdded333d
1 changed files with 4 additions and 5 deletions
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9
drivers/i2c/busses/i2c-altera.c
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@ -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 = 100000; /* default clock rate */
}