linux-kernel - [patch] drivers: net: xgene: uninitialized variable in xgene_enet_free

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Date:   Wed, 7 Dec 2016 14:14:24 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Iyappan Subramanian <isubramanian@....com>
Cc:     Keyur Chudgar <kchudgar@....com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] drivers: net: xgene: uninitialized variable in
 xgene_enet_free_pagepool()

We never set "slots" in this function.

Fixes: a9380b0f7be8 ("drivers: net: xgene: Add support for Jumbo frame")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
I copied how slots gets set in xgene_enet_rx_frame().  Static analysis.
Not tested.

diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
index 6c7eea8b36af..884a334e82d0 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
@@ -635,6 +635,7 @@ static void xgene_enet_free_pagepool(struct xgene_enet_desc_ring *buf_pool,
 		return;
 
 	dev = ndev_to_dev(buf_pool->ndev);
+	slots = buf_pool->slots - 1;
 	head = buf_pool->head;
 
 	for (i = 0; i < 4; i++) {