linux-kernel - [PATCH] vme: ca91cx42: fix memleak in ca91cx42_dma_list

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Message-Id: <20200823062743.6860-1-dinghao.liu@zju.edu.cn>
Date:   Sun, 23 Aug 2020 14:27:40 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn, kjlu@....edu
Cc:     Martyn Welch <martyn@...chs.me.uk>,
        Manohar Vanga <manohar.vanga@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] vme: ca91cx42: fix memleak in ca91cx42_dma_list_add

When we encounter invalid data width or address space,
entry should be freed just like what we've done in the
previous error paths.

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 drivers/vme/bridges/vme_ca91cx42.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/vme/bridges/vme_ca91cx42.c b/drivers/vme/bridges/vme_ca91cx42.c
index ea938dc29c5e..1c464afd9d4e 100644
--- a/drivers/vme/bridges/vme_ca91cx42.c
+++ b/drivers/vme/bridges/vme_ca91cx42.c
@@ -1100,7 +1100,8 @@ static int ca91cx42_dma_list_add(struct vme_dma_list *list,
 		break;
 	default:
 		dev_err(dev, "Invalid data width\n");
-		return -EINVAL;
+		retval = -EINVAL;
+		goto err_cycle;
 	}
 
 	/* Setup address space */
@@ -1122,8 +1123,8 @@ static int ca91cx42_dma_list_add(struct vme_dma_list *list,
 		break;
 	default:
 		dev_err(dev, "Invalid address space\n");
-		return -EINVAL;
-		break;
+		retval = -EINVAL;
+		goto err_cycle;
 	}
 
 	if (vme_attr->cycle & VME_SUPER)
-- 
2.17.1