From e0f0be7dee97dfa01d5c90ab45c1302600604bda Mon Sep 17 00:00:00 2001 From: Young Xiao <92siuyang@gmail.com> Date: Tue, 28 May 2019 19:58:02 +0800 Subject: [PATCH] ixgbevf: fix possible divide by zero in ixgbevf_update_itr The next call to ixgbevf_update_itr will continue to dynamically update ITR. Copy from commit bdbeefe8ea8c ("ixgbe: fix possible divide by zero in ixgbe_update_itr") Signed-off-by: Young Xiao <92siuyang@gmail.com> Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index d189ed247665..d2b41f9f87f8 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -1423,6 +1423,9 @@ static void ixgbevf_update_itr(struct ixgbevf_q_vector *q_vector, */ /* what was last interrupt timeslice? */ timepassed_us = q_vector->itr >> 2; + if (timepassed_us == 0) + return; + bytes_perint = bytes / timepassed_us; /* bytes/usec */ switch (itr_setting) { -- 2.39.5