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authorWolfram Sang <wsa@the-dreams.de>2016-04-03 23:32:00 +0200
committerWolfram Sang <wsa@the-dreams.de>2016-04-07 21:13:38 +0200
commit34cf2acdafaa31a13821e45de5ee896adcd307b1 (patch)
treec8c875b5fb873558bd281632523fcc0eb3a7a487
parent39b132b0fadf3a3ba66d3a5185a84cb5bb21b5e7 (diff)
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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 <wsa@the-dreams.de>
-rw-r--r--drivers/i2c/busses/i2c-jz4780.c2
1 files changed, 1 insertions, 1 deletions
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;
}