e1000: Use time_after() for time comparison

To be future-proof and for better readability the time comparisons are modified
to use time_after() instead of plain, error-prone math.

Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c
index 341889a..08b207d 100644 (file)
--- a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c
+++ b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c
@@ -1460,7 +1460,8 @@ static int e1000_run_loopback_test(struct e1000_adapter *adapter)
                         * enough time to complete the receives, if it's
                         * exceeded, break and error off
                         */
-               } while (good_cnt < 64 && jiffies < (time + 20));
+               } while (good_cnt < 64 && time_after(time + 20, jiffies));
+
                if (good_cnt != 64) {
                        ret_val = 13; /* ret_val is the same as mis-compare */
                        break;