From 7ce5eacb45a7c819a6bec6ed486f27db9aab6ab6 Mon Sep 17 00:00:00 2001
From: Dotan Barak <dotanb@dev.mellanox.co.il>
Date: Wed, 16 Apr 2008 21:09:28 -0700
Subject: [PATCH] IB/core: Check optional verbs before using them
Make sure that a device implements the modify_srq and reg_phys_mr
optional methods before calling them.
Signed-off-by: Dotan Barak <dotanb@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---
drivers/infiniband/core/verbs.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 86ed8af9c7e6..8ffb5f2c21f7 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -248,7 +248,9 @@ int ib_modify_srq(struct ib_srq *srq,
struct ib_srq_attr *srq_attr,
enum ib_srq_attr_mask srq_attr_mask)
{
- return srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL);
+ return srq->device->modify_srq ?
+ srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) :
+ -ENOSYS;
}
EXPORT_SYMBOL(ib_modify_srq);
@@ -672,6 +674,9 @@ struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
{
struct ib_mr *mr;
+ if (!pd->device->reg_phys_mr)
+ return ERR_PTR(-ENOSYS);
+
mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf,
mr_access_flags, iova_start);
--
2.34.1