X-Git-Url: http://git.cascardo.eti.br/?p=cascardo%2Flinux.git;a=blobdiff_plain;f=drivers%2Fnet%2Fethernet%2Fmellanox%2Fmlx4%2Fen_clock.c;h=a5fc46bbcbe224373b768633f600f3d66d4865d5;hp=08fc5fc56d43b489ab6a8502012b5cad925a0e7b;hb=4850cf4581578216468b7b3c3d06cc5abb0a697d;hpb=72da2e911f79d4c7132d7431a97d46659ee862be

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_clock.c b/drivers/net/ethernet/mellanox/mlx4/en_clock.c
index 08fc5fc56d43..a5fc46bbcbe2 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_clock.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_clock.c
@@ -245,8 +245,11 @@ static u32 freq_to_shift(u16 freq)
 {
 	u32 freq_khz = freq * 1000;
 	u64 max_val_cycles = freq_khz * 1000 * MLX4_EN_WRAP_AROUND_SEC;
+	u64 tmp_rounded =
+		roundup_pow_of_two(max_val_cycles) > max_val_cycles ?
+		roundup_pow_of_two(max_val_cycles) - 1 : UINT_MAX;
 	u64 max_val_cycles_rounded = is_power_of_2(max_val_cycles + 1) ?
-		max_val_cycles : roundup_pow_of_two(max_val_cycles) - 1;
+		max_val_cycles : tmp_rounded;
 	/* calculate max possible multiplier in order to fit in 64bit */
 	u64 max_mul = div_u64(0xffffffffffffffffULL, max_val_cycles_rounded);