IB/ehca: Ensure that guid_entry index is not negative
This prevents the memcpy() of a guid_entries element using a negative index.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/ehca/ehca_hca.c b/drivers/infiniband/hw/ehca/ehca_hca.c
index 9209c53..8b92f85 100644
--- a/drivers/infiniband/hw/ehca/ehca_hca.c
+++ b/drivers/infiniband/hw/ehca/ehca_hca.c
@@ -319,7 +319,7 @@
ib_device);
struct hipz_query_port *rblock;
- if (index > 255) {
+ if (index < 0 || index > 255) {
ehca_err(&shca->ib_device, "Invalid index: %x.", index);
return -EINVAL;
}