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path: root/drivers/i2c/busses/i2c-uniphier-f.c
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Diffstat (limited to 'drivers/i2c/busses/i2c-uniphier-f.c')
-rw-r--r--drivers/i2c/busses/i2c-uniphier-f.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-uniphier-f.c b/drivers/i2c/busses/i2c-uniphier-f.c
index e8d03bcfe3e0..f3e5ff8522f0 100644
--- a/drivers/i2c/busses/i2c-uniphier-f.c
+++ b/drivers/i2c/busses/i2c-uniphier-f.c
@@ -466,6 +466,11 @@ static int uniphier_fi2c_clk_init(struct device *dev,
if (of_property_read_u32(np, "clock-frequency", &bus_speed))
bus_speed = UNIPHIER_FI2C_DEFAULT_SPEED;
+ if (!bus_speed) {
+ dev_err(dev, "clock-freqyency should not be zero\n");
+ return -EINVAL;
+ }
+
if (bus_speed > UNIPHIER_FI2C_MAX_SPEED)
bus_speed = UNIPHIER_FI2C_MAX_SPEED;
@@ -481,6 +486,10 @@ static int uniphier_fi2c_clk_init(struct device *dev,
return ret;
clk_rate = clk_get_rate(priv->clk);
+ if (!clk_rate) {
+ dev_err(dev, "input clock rate should not be zero\n");
+ return -EINVAL;
+ }
uniphier_fi2c_reset(priv);
@@ -531,7 +540,7 @@ static int uniphier_fi2c_probe(struct platform_device *pdev)
ret = uniphier_fi2c_clk_init(dev, priv);
if (ret)
- return ret;
+ goto err;
ret = devm_request_irq(dev, irq, uniphier_fi2c_interrupt, 0,
pdev->name, priv);