From: Wolfram Sang <wsa+rene...@sang-engineering.com>
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+rene...@sang-engineering.com>
Acked-by: Sergei Shtylyov <sergei.shtyl...@cogentembedded.com>
---
The original patch was marked as "NOT APPLICABLE" in patchwork. I reviewed
again and can't see why. So, in case this remains true, please explain.
drivers/net/ethernet/renesas/ravb_main.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/renesas/ravb_main.c
b/drivers/net/ethernet/renesas/ravb_main.c
index 4e1a7dba7c4abb..791930b63991dc 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -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);
--
2.7.0
