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i2c: jz4780: prevent potential division by zero
[cascardo/linux.git]
/
drivers
/
i2c
/
busses
/
i2c-jz4780.c
diff --git
a/drivers/i2c/busses/i2c-jz4780.c
b/drivers/i2c/busses/i2c-jz4780.c
index
f325663
..
597408f
100644
(file)
--- a/
drivers/i2c/busses/i2c-jz4780.c
+++ b/
drivers/i2c/busses/i2c-jz4780.c
@@
-770,7
+770,7
@@
static int jz4780_i2c_probe(struct platform_device *pdev)
ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency",
&clk_freq);
- if (ret) {
+ if (ret
|| clk_freq == 0
) {
dev_err(&pdev->dev, "clock-frequency not specified in DT");
goto err;
}