iw_cxgb4: correctly enforce the max reg_mr depth

The code was mistakenly using the length of the page array memory instead
of the depth of the page array.

This would cause MR creation to fail in some cases.

Fixes: 8376b86de7d3 ("iw_cxgb4: Support the new memory registration API")
Cc: stable@vger.kernel.org
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index 1445918e32392f28ae4ce9ea74e7df0feeddf371..7b76e6f81aeb477181afedc2f44fec990ce3090f 100644 (file)
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -774,7 +774,7 @@ static int c4iw_set_page(struct ib_mr *ibmr, u64 addr)
 {
        struct c4iw_mr *mhp = to_c4iw_mr(ibmr);
 
-       if (unlikely(mhp->mpl_len == mhp->max_mpl_len))
+       if (unlikely(mhp->mpl_len == mhp->attr.pbl_size))
                return -ENOMEM;
 
        mhp->mpl[mhp->mpl_len++] = addr;