Commit a8f82988 authored Apr 13, 2016 by Axel Lin Committed by Greg Kroah-Hartman Nov 28, 2023

i2c: sun6i-p2wi: Prevent potential division by zero



[ Upstream commit 5ac61d26b8baff5b2e5a9f3dc1ef63297e4b53e7 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 80876a07

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

+5 −0

Original line number	Diff line number	Diff line
		@@ -202,6 +202,11 @@ 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;