Commit a6d37131 authored Apr 08, 2016 by Wolfram Sang Committed by David S. Miller Apr 13, 2016

net: ethernet: renesas: ravb_main: test clock rate to avoid division by 0



The clk API may return 0 on clk_get_rate, so we should check the result before
using it as a divisor.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 60e19518

drivers/net/ethernet/renesas/ravb_main.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1691,6 +1691,9 @@ static int ravb_set_gti(struct net_device *ndev)
		rate = clk_get_rate(clk);
		clk_put(clk);

		if (!rate)
		return -EINVAL;

		inc = 1000000000ULL << 20;
		do_div(inc, rate);