From: Young Xiao <92siuyang@gmail.com> Date: Tue, 28 May 2019 11:58:02 +0000 (+0800) Subject: ixgbevf: fix possible divide by zero in ixgbevf_update_itr X-Git-Tag: v5.4-rc1~616^2~132^2~8 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e0f0be7dee97dfa01d5c90ab45c1302600604bda;p=platform%2Fkernel%2Flinux-rpi.git 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 --- diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index d189ed2..d2b41f9 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) {