IB/ipath: fix handling of kpiobufs

Change comment: no longer imply that user can set ipath_kpiobufs to zero.
Actually set ipath_kpiobufs from parameter. Previously only altered
per-device ipath_lastport_piobuf, which was over-written in chip init.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_init_chip.c b/drivers/infiniband/hw/ipath/ipath_init_chip.c
index c63de8f0fa9e..75c372136702 100644
--- a/drivers/infiniband/hw/ipath/ipath_init_chip.c
+++ b/drivers/infiniband/hw/ipath/ipath_init_chip.c
@@ -691,7 +691,7 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit)
         dd->ipath_pioavregs = ALIGN(val, sizeof(u64) * BITS_PER_BYTE / 2)
                 / (sizeof(u64) * BITS_PER_BYTE / 2);
         if (ipath_kpiobufs == 0) {
-                /* not set by user, or set explictly to default  */
+                /* not set by user (this is default) */
                 if ((dd->ipath_piobcnt2k + dd->ipath_piobcnt4k) > 128)
                         kpiobufs = 32;
                 else
@@ -950,6 +950,7 @@ static int ipath_set_kpiobufs(const char *str, struct kernel_param *kp)
                         dd->ipath_piobcnt2k + dd->ipath_piobcnt4k - val;
         }
 
+        ipath_kpiobufs = val;
         ret = 0;
 bail:
         spin_unlock_irqrestore(&ipath_devs_lock, flags);