From a28262aea838045313f2c8d1c11abb90f1efba4a Mon Sep 17 00:00:00 2001
From: "Wunderlich, Mark" <mark.wunderlich@intel.com>
Date: Wed, 18 Sep 2019 23:36:37 +0000
Subject: [PATCH] nvme-tcp: fix wrong stop condition in io_work

commit ddef29578a81a1d4d8f2b26a7adbfe21407ee3ea upstream.

Allow the do/while statement to continue if current time
is not after the proposed time 'deadline'. Intent is to
allow loop to proceed for a specific time period. Currently
the loop, as coded, will exit after first pass.

Signed-off-by: Mark Wunderlich <mark.wunderlich@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 606b13d35d16..bdadb27b28bb 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -1039,7 +1039,7 @@ static void nvme_tcp_io_work(struct work_struct *w)
 {
 	struct nvme_tcp_queue *queue =
 		container_of(w, struct nvme_tcp_queue, io_work);
-	unsigned long start = jiffies + msecs_to_jiffies(1);
+	unsigned long deadline = jiffies + msecs_to_jiffies(1);
 
 	do {
 		bool pending = false;
@@ -1064,7 +1064,7 @@ static void nvme_tcp_io_work(struct work_struct *w)
 		if (!pending)
 			return;
 
-	} while (time_after(jiffies, start)); /* quota is exhausted */
+	} while (!time_after(jiffies, deadline)); /* quota is exhausted */
 
 	queue_work_on(queue->io_cpu, nvme_tcp_wq, &queue->io_work);
 }
-- 
2.7.4