netdev - [net-next 7/7] e1000: Use time_after() for time comparison

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Message-Id: <1401781509-6435-8-git-send-email-jeffrey.t.kirsher@intel.com>
Date:	Tue,  3 Jun 2014 00:45:09 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	Manuel Schölling <manuel.schoelling@....de>,
	netdev@...r.kernel.org, gospo@...hat.com, sassmann@...hat.com,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 7/7] e1000: Use time_after() for time comparison

From: Manuel Schölling <manuel.schoelling@....de>

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@....de>
Tested-by: Aaron Brown <aaron.f.brown@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/e1000/e1000_ethtool.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c
index 341889a..08b207d 100644
--- 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;
-- 
1.9.3

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