diff options
| author | Young Xiao <92siuyang@gmail.com> | 2019-05-28 19:58:02 +0800 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2019-06-26 09:18:54 -0700 |
| commit | e0f0be7dee97dfa01d5c90ab45c1302600604bda (patch) | |
| tree | adf6a51d3d8b97fe55ac34b565a62a756194a5a6 /drivers/net/ethernet/intel/ixgbevf | |
| parent | 655c91414579d7bb115a4f7898ee726fc18e0984 (diff) | |
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 <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbevf')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 3 |
1 files changed, 3 insertions, 0 deletions
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) { |