[RFC v2 12/12] IB/core: add a protection to ib_get_dma_mr

[Ram Amrani]

From: Ram amrani <ram.amr...@cavium.com>

Add a check that prevents ib_get_dma_mr from executing if
IB_ACCESS_MW_BIND is set.

Signed-off-by: Ram Amrani <ram.amr...@cavium.com>
---
 drivers/infiniband/core/verbs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index f2b776e..8cc6f79 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -1400,6 +1400,9 @@ struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int 
mr_access_flags)
        if (err)
                return ERR_PTR(err);
 
+       if (mr_access_flags & IB_ACCESS_MW_BIND)
+               return ERR_PTR(-EINVAL);
+
        mr = pd->device->get_dma_mr(pd, mr_access_flags);
 
        if (!IS_ERR(mr)) {
-- 
1.8.3.1