Subject: [PATCH] cnic: ensure ulp_type is not negative

From: Roel Kluin <[email-masked]>
Date: Mon, 02 Nov 2009 17:53:44 +0100

`ulp_type' is signed, make sure it is not negative
when we read the array element.

Signed-off-by: Roel Kluin <[email-masked]>
---
 drivers/net/cnic.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
index 3bf1b04..f384b0a 100644
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -347,7 +347,7 @@ int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
 {
 	struct cnic_dev *dev;
 
-	if (ulp_type >= MAX_CNIC_ULP_TYPE) {
+	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 		printk(KERN_ERR PFX "cnic_register_driver: Bad type %d\n",
 		       ulp_type);
 		return -EINVAL;
@@ -393,7 +393,7 @@ int cnic_unregister_driver(int ulp_type)
 	struct cnic_ulp_ops *ulp_ops;
 	int i = 0;
 
-	if (ulp_type >= MAX_CNIC_ULP_TYPE) {
+	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 		printk(KERN_ERR PFX "cnic_unregister_driver: Bad type %d\n",
 		       ulp_type);
 		return -EINVAL;
@@ -449,7 +449,7 @@ static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
 	struct cnic_local *cp = dev->cnic_priv;
 	struct cnic_ulp_ops *ulp_ops;
 
-	if (ulp_type >= MAX_CNIC_ULP_TYPE) {
+	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 		printk(KERN_ERR PFX "cnic_register_device: Bad type %d\n",
 		       ulp_type);
 		return -EINVAL;
@@ -490,7 +490,7 @@ static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
 	struct cnic_local *cp = dev->cnic_priv;
 	int i = 0;
 
-	if (ulp_type >= MAX_CNIC_ULP_TYPE) {
+	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
 		printk(KERN_ERR PFX "cnic_unregister_device: Bad type %d\n",
 		       ulp_type);
 		return -EINVAL;