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 34d68e5..e8a948f 100644 (file)
--- 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);