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IB/core: Check optional verbs before using them

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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>
This commit is contained in:
Dotan Barak 2008-04-16 21:09:28 -07:00 • committed by Roland Dreier
parent b3b8128fd3
commit 7ce5eacb45
1 changed files with 6 additions and 1 deletions
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7
drivers/infiniband/core/verbs.c
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@ -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);