linux-kernel - [PATCH] ioat: Use time

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Message-Id: <1400789466-11156-1-git-send-email-manuel.schoelling@gmx.de>
Date:	Thu, 22 May 2014 22:11:06 +0200
From:	Manuel Schölling <manuel.schoelling@....de>
To:	vinod.koul@...el.com
Cc:	dan.j.williams@...el.com, b.zolnierkie@...sung.com,
	dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Manuel Schölling <manuel.schoelling@....de>
Subject: [PATCH] ioat: Use time_before()

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

Signed-off-by: Manuel Schölling <manuel.schoelling@....de>
---
 drivers/dma/ioat/dma_v2.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c
index 8d10580..fdd60c7 100644
--- a/drivers/dma/ioat/dma_v2.c
+++ b/drivers/dma/ioat/dma_v2.c
@@ -735,7 +735,8 @@ int ioat2_check_space_lock(struct ioat2_dma_chan *ioat, int num_descs)
 	 * called under bh_disabled so we need to trigger the timer
 	 * event directly
 	 */
-	if (jiffies > chan->timer.expires && timer_pending(&chan->timer)) {
+	if (time_before(chan->timer.expires, jiffies)
+	    && timer_pending(&chan->timer)) {
 		struct ioatdma_device *device = chan->device;
 
 		mod_timer(&chan->timer, jiffies + COMPLETION_TIMEOUT);
-- 
1.7.10.4

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