From 34cf2acdafaa31a13821e45de5ee896adcd307b1 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Sun, 3 Apr 2016 23:32:00 +0200 Subject: [PATCH] i2c: jz4780: 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: Wolfram Sang --- drivers/i2c/busses/i2c-jz4780.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-jz4780.c b/drivers/i2c/busses/i2c-jz4780.c index f325663c27c5..597408fc6834 100644 --- 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; } -- 2.30.2