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ixgbevf: fix possible divide by zero in ixgbevf_update_itr

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The next call to ixgbevf_update_itr will continue to dynamically
update ITR.

Copy from commit bdbeefe8ea ("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>
This commit is contained in:
Young Xiao 2019-05-28 19:58:02 +08:00 committed by Jeff Kirsher
parent 655c914145
commit e0f0be7dee
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
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@ -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) {