i2c: sun6i-p2wi: Prevent potential division by zero
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: Axel Lin <axel.lin@ingics.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
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@ -201,6 +201,11 @@ static int p2wi_probe(struct platform_device *pdev)
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return -EINVAL;
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}
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if (clk_freq == 0) {
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dev_err(dev, "clock-frequency is set to 0 in DT\n");
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return -EINVAL;
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}
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if (of_get_child_count(np) > 1) {
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dev_err(dev, "P2WI only supports one slave device\n");
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return -EINVAL;
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