[PATCH] i2c: efm32: Prevent potential division by zero

[Axel Lin <axel.lin@ingics.com>]

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>
---
 drivers/i2c/busses/i2c-efm32.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-efm32.c b/drivers/i2c/busses/i2c-efm32.c
index 8eff627..394c695 100644
--- a/drivers/i2c/busses/i2c-efm32.c
+++ b/drivers/i2c/busses/i2c-efm32.c
@@ -389,7 +389,7 @@ static int efm32_i2c_probe(struct platform_device *pdev)
 	ddata->location = location;
 
 	ret = of_property_read_u32(np, "clock-frequency", &frequency);
-	if (!ret) {
+	if (!ret && frequency != 0) {
 		dev_dbg(&pdev->dev, "using frequency %u\n", frequency);
 	} else {
 		frequency = 100000;
-- 
2.5.0