[PATCH] drivers/infiniband: Add a check for strict_strtoul()

[Liu Yuan]

From: Liu Yuan <tailai.ly@xxxxxxxxxx>

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

Signed-off-by: Liu Yuan <tailai.ly@xxxxxxxxxx>
---
 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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