linux-kernel - [PATCH] drivers/infiniband: Add a check for strict

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Date:	Fri,  1 Apr 2011 14:23:49 +0800
From:	Liu Yuan <namei.unix@...il.com>
To:	Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>
Cc:	linux-rdma@...r.kernel.org (open list:NETEFFECT IWARP R...),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] drivers/infiniband: Add a check for strict_strtoul()

From: Liu Yuan <tailai.ly@...bao.com>

It should check if strict_strtoul() succeeds before using
'wqm_quanta_value'.

Signed-off-by: Liu Yuan <tailai.ly@...bao.com>
---
 drivers/infiniband/hw/nes/nes.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c
index 13de119..119d60d 100644
--- a/drivers/infiniband/hw/nes/nes.c
+++ b/drivers/infiniband/hw/nes/nes.c
@@ -1138,7 +1138,9 @@ static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
 	u32 i = 0;
 	struct nes_device *nesdev;
 
-	strict_strtoul(buf, 0, &wqm_quanta_value);
+	if (strict_strtoul(buf, 0, &wqm_quanta_value) < 0)
+		return -EINVAL;
+
 	list_for_each_entry(nesdev, &nes_dev_list, list) {
 		if (i == ee_flsh_adapter) {
 			nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
-- 
1.7.1

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