From: Michael S. Tsirkin <mst@mellanox.co.il>
Date: Fri, 6 Jan 2006 00:17:38 +0000 (-0800)
Subject: IB/mthca: create_eq with size not a power of 2
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=466200562ccd80f728f7ef602d2b97b4fdedd566;p=deliverable%2Flinux.git

IB/mthca: create_eq with size not a power of 2

Fix mthca_create_eq for when the EQ size is not a power of 2.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

diff --git a/drivers/infiniband/hw/mthca/mthca_eq.c b/drivers/infiniband/hw/mthca/mthca_eq.c
index 34d68e5a72d8..e8a948f087c0 100644
--- a/drivers/infiniband/hw/mthca/mthca_eq.c
+++ b/drivers/infiniband/hw/mthca/mthca_eq.c
@@ -484,8 +484,7 @@ static int __devinit mthca_create_eq(struct mthca_dev *dev,
 				     u8 intr,
 				     struct mthca_eq *eq)
 {
-	int npages = (nent * MTHCA_EQ_ENTRY_SIZE + PAGE_SIZE - 1) /
-		PAGE_SIZE;
+	int npages;
 	u64 *dma_list = NULL;
 	dma_addr_t t;
 	struct mthca_mailbox *mailbox;
@@ -496,6 +495,7 @@ static int __devinit mthca_create_eq(struct mthca_dev *dev,
 
 	eq->dev  = dev;
 	eq->nent = roundup_pow_of_two(max(nent, 2));
+ 	npages = ALIGN(eq->nent * MTHCA_EQ_ENTRY_SIZE, PAGE_SIZE) / PAGE_SIZE;
 
 	eq->page_list = kmalloc(npages * sizeof *eq->page_list,
 				GFP_KERNEL);