Commit 5ac61d26 authored by Axel Lin's avatar Axel Lin Committed by Wolfram Sang
Browse files

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: default avatarAxel Lin <axel.lin@ingics.com>
Acked-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
parent d9387eda

drivers/i2c/busses/i2c-sun6i-p2wi.c

+5 −0
Original line number Diff line number Diff line
@@ -201,6 +201,11 @@ static int p2wi_probe(struct platform_device *pdev) 
		return -EINVAL;

	}



	if (clk_freq == 0) {

		dev_err(dev, "clock-frequency is set to 0 in DT\n");

		return -EINVAL;

	}



	if (of_get_child_count(np) > 1) {

		dev_err(dev, "P2WI only supports one slave device\n");

		return -EINVAL;