From 5e9445da288c5121546235e8201768abd087b281 Mon Sep 17 00:00:00 2001
From: Ashish Kumar <Ashish.Kumar@nxp.com>
Date: Thu, 26 Oct 2017 16:03:22 +0530
Subject: [PATCH] drivers: net: ldpaa_eth: Correct error handler for
 qbman_swp_acquire()

The zero value returned from qbman_swp_acquire() is an error
condition meaning no free buffer for allocation.

Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>
Signed-off-by: Kushwaha Prabhakar <prabhakar@freescale.com>
[YS: revised commit message]
Reviewed-by: York Sun <york.sun@nxp.com>
---
 drivers/net/ldpaa_eth/ldpaa_eth.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ldpaa_eth/ldpaa_eth.c b/drivers/net/ldpaa_eth/ldpaa_eth.c
index f235b622b6..21be79a58a 100644
--- a/drivers/net/ldpaa_eth/ldpaa_eth.c
+++ b/drivers/net/ldpaa_eth/ldpaa_eth.c
@@ -334,7 +334,7 @@ static int ldpaa_eth_tx(struct eth_device *net_dev, void *buf, int len)
 					&buffer_start, 1);
 	} while (err == -EBUSY);
 
-	if (err < 0) {
+	if (err <= 0) {
 		printf("qbman_swp_acquire() failed\n");
 		return -ENOMEM;
 	}
-- 
2.39.5