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i2c: jz4780: prevent potential division by zero

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Make sure we don't OOPS in case clock-frequency is set to 0 in a DT. The
variable set here is later used as a divisor.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang 2016-04-03 23:32:00 +02:00
parent 39b132b0fa
commit 34cf2acdaf
1 changed files with 1 additions and 1 deletions
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2
drivers/i2c/busses/i2c-jz4780.c
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@ -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;
}