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Diffstat (limited to 'net/ipv4/tcp_dctcp.c')
-rw-r--r--net/ipv4/tcp_dctcp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_dctcp.c b/net/ipv4/tcp_dctcp.c
index 7092a61c4..7e538f71f 100644
--- a/net/ipv4/tcp_dctcp.c
+++ b/net/ipv4/tcp_dctcp.c
@@ -209,7 +209,7 @@ static void dctcp_update_alpha(struct sock *sk, u32 flags)
/* alpha = (1 - g) * alpha + g * F */
- alpha -= alpha >> dctcp_shift_g;
+ alpha -= min_not_zero(alpha, alpha >> dctcp_shift_g);
if (bytes_ecn) {
/* If dctcp_shift_g == 1, a 32bit value would overflow
* after 8 Mbytes.