[dpdk-stable] patch 'event/dpaa2: remove check on epoll return' has been queued to stable release 18.02.2

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 18.02.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/16/18. So please
shout if anyone has objections.

Thanks.

Luca Boccassi

---
>From fd92d1ca6266da449af9ee716bb3ae52ae925f02 Mon Sep 17 00:00:00 2001
From: Nipun Gupta <nipun.gupta at nxp.com>
Date: Wed, 9 May 2018 14:50:52 +0530
Subject: [PATCH] event/dpaa2: remove check on epoll return

[ upstream commit 3c21086bcb3786f76ad51d067f9498155aa278af ]

Driver shouldn't take decision on signals received. The return
from epoll was blocking on EINTR which is not the right use-case.

Fixes: 36d87bb92230 ("event/dpaa2: handle timeout using interrupts in dequeue")

Signed-off-by: Nipun Gupta <nipun.gupta at nxp.com>
Acked-by: Hemant Agrawal <hemant.agrawal at nxp.com>
---
 drivers/event/dpaa2/dpaa2_eventdev.c | 16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

diff --git a/drivers/event/dpaa2/dpaa2_eventdev.c b/drivers/event/dpaa2/dpaa2_eventdev.c
index c3e6fbff1..977e8df85 100644
--- a/drivers/event/dpaa2/dpaa2_eventdev.c
+++ b/drivers/event/dpaa2/dpaa2_eventdev.c
@@ -153,26 +153,12 @@ dpaa2_eventdev_enqueue(void *port, const struct rte_event *ev)
 static void dpaa2_eventdev_dequeue_wait(uint64_t timeout_ticks)
 {
 	struct epoll_event epoll_ev;
-	int ret, i = 0;
 
 	qbman_swp_interrupt_clear_status(DPAA2_PER_LCORE_PORTAL,
 					 QBMAN_SWP_INTERRUPT_DQRI);
 
-RETRY:
-	ret = epoll_wait(DPAA2_PER_LCORE_DPIO->epoll_fd,
+	epoll_wait(DPAA2_PER_LCORE_DPIO->epoll_fd,
 			 &epoll_ev, 1, timeout_ticks);
-	if (ret < 1) {
-		/* sometimes due to some spurious interrupts epoll_wait fails
-		 * with errno EINTR. so here we are retrying epoll_wait in such
-		 * case to avoid the problem.
-		 */
-		if (errno == EINTR) {
-			DPAA2_EVENTDEV_DEBUG("epoll_wait fails\n");
-			if (i++ > 10)
-				DPAA2_EVENTDEV_DEBUG("Dequeue burst Failed\n");
-		goto RETRY;
-		}
-	}
 }
 
 static void dpaa2_eventdev_process_parallel(struct qbman_swp *swp,
-- 
2.14.2