patches for DPDK stable branches
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From: wangyunjian <wangyunjian@huawei.com>
To: <dev@dpdk.org>
Cc: <david.marchand@redhat.com>, <jia.guo@intel.com>,
	<jerinj@marvell.com>, <jerry.lilijun@huawei.com>,
	<xudingke@huawei.com>, Yunjian Wang <wangyunjian@huawei.com>,
	<stable@dpdk.org>
Subject: [dpdk-stable] [dpdk-dev] [PATCH v5 2/3] eal: return error code when failure
Date: Wed, 21 Oct 2020 19:19:23 +0800
Message-ID: <0c755de289f228e67897818639a171cbf1d768ae.1603207676.git.wangyunjian@huawei.com> (raw)
In-Reply-To: <cover.1603207676.git.wangyunjian@huawei.com>

From: Yunjian Wang <wangyunjian@huawei.com>

Fix return value, using -EAGAIN instead of 0 when the callback is busy
and using -ENOENT instead of 0 when the callback is not found.

Fixes: a753e53d517b ("eal: add device event monitor framework")
Cc: stable@dpdk.org

Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Acked-by: Jeff Guo <jia.guo@intel.com>
---
 lib/librte_eal/common/eal_common_dev.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c
index 363a2ca95e..d990bfd20d 100644
--- a/lib/librte_eal/common/eal_common_dev.c
+++ b/lib/librte_eal/common/eal_common_dev.c
@@ -530,9 +530,15 @@ rte_dev_event_callback_unregister(const char *device_name,
 			free(event_cb);
 			ret++;
 		} else {
-			continue;
+			ret = -EAGAIN;
+			break;
 		}
 	}
+
+	/* this callback is not be registered */
+	if (ret == 0)
+		ret = -ENOENT;
+
 	rte_spinlock_unlock(&dev_event_lock);
 	return ret;
 }
-- 
2.23.0


  parent reply	other threads:[~2020-10-21 11:19 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <cover.1603207676.git.wangyunjian@huawei.com>
2020-10-21 11:19 ` [dpdk-stable] [dpdk-dev] [PATCH v5 1/3] eal: fix memory leak when removing event_cb wangyunjian
2020-10-21 11:19 ` wangyunjian [this message]
2020-10-22 12:51   ` [dpdk-stable] [dpdk-dev] [PATCH v5 2/3] eal: return error code when failure David Marchand
2020-10-23  9:05     ` wangyunjian
2020-10-21 11:19 ` [dpdk-stable] [dpdk-dev] [PATCH v5 3/3] eal: fix a wrong returned value when callback exists wangyunjian
2020-10-22 12:55   ` David Marchand
2020-10-23  9:05     ` wangyunjian

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