1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c
index e1f947446c2a..439d3c503cd5 100644
--- a/drivers/infiniband/hw/qib/qib_iba7220.c
+++ b/drivers/infiniband/hw/qib/qib_iba7220.c
@@ -39,6 +39,7 @@
 #include <linux/interrupt.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
+#include <linux/module.h>
 #include <linux/io.h>
 #include <rdma/ib_verbs.h>
 
@@ -4085,6 +4086,8 @@ static int qib_init_7220_variables(struct qib_devdata *dd)
         /* we always allocate at least 2048 bytes for eager buffers */
         ret = ib_mtu_enum_to_int(qib_ibmtu);
         dd->rcvegrbufsize = ret != -1 ? max(ret, 2048) : QIB_DEFAULT_MTU;
+        BUG_ON(!is_power_of_2(dd->rcvegrbufsize));
+        dd->rcvegrbufsize_shift = ilog2(dd->rcvegrbufsize);
 
         qib_7220_tidtemplate(dd);