From: Bryan O'Sullivan <bos@pathscale.com>
Date: Fri, 25 Aug 2006 18:24:37 +0000 (-0700)
Subject: IB/ipath: do not allow use of CQ entries with invalid counts
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=eae33d47a797e159306567643284a98ae7428ec4;p=linux-beck.git

IB/ipath: do not allow use of CQ entries with invalid counts

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

diff --git a/drivers/infiniband/hw/ipath/ipath_cq.c b/drivers/infiniband/hw/ipath/ipath_cq.c
index 3c4c198a4514..049221bc590e 100644
--- a/drivers/infiniband/hw/ipath/ipath_cq.c
+++ b/drivers/infiniband/hw/ipath/ipath_cq.c
@@ -172,7 +172,7 @@ struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries,
 	struct ipath_cq_wc *wc;
 	struct ib_cq *ret;
 
-	if (entries > ib_ipath_max_cqes) {
+	if (entries < 1 || entries > ib_ipath_max_cqes) {
 		ret = ERR_PTR(-EINVAL);
 		goto done;
 	}
@@ -324,6 +324,11 @@ int ipath_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
 	u32 head, tail, n;
 	int ret;
 
+	if (cqe < 1 || cqe > ib_ipath_max_cqes) {
+		ret = -EINVAL;
+		goto bail;
+	}
+
 	/*
 	 * Need to use vmalloc() if we want to support large #s of entries.
 	 */