[U-Boot] [PATCH] drivers: net: ldpaa_eth: Correct error handler for qbman_swp_acquire()

[Ashish Kumar]

Correcting error handing for qbman_swp_acquire. The return value is zero is
an error condition since number of buffer copied is zero meaning
there are no free buffers for allocation.

Signed-off-by: Ashish Kumar <Ashish.Kumar at nxp.com>
Signed-off-by: Kushwaha Prabhakar <prabhakar at freescale.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 f235b62..21be79a 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;
 	}
-- 
2.7.4