IB/ipath: fix return value from ipath_poll

This stops the generic poll code from waiting for a timeout.

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

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 6ba9a2d1e6ec..29930e22318e 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -1150,6 +1150,7 @@ static unsigned int ipath_poll(struct file *fp,
         struct ipath_portdata *pd;
         u32 head, tail;
         int bit;
+        unsigned pollflag = 0;
         struct ipath_devdata *dd;
 
         pd = port_fp(fp);
@@ -1186,9 +1187,12 @@ static unsigned int ipath_poll(struct file *fp,
                         clear_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag);
                         pd->port_rcvwait_to++;
                 }
+                else
+                        pollflag = POLLIN | POLLRDNORM;
         }
         else {
                 /* it's already happened; don't do wait_event overhead */
+                pollflag = POLLIN | POLLRDNORM;
                 pd->port_rcvnowait++;
         }
 
@@ -1196,7 +1200,7 @@ static unsigned int ipath_poll(struct file *fp,
         ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl,
                          dd->ipath_rcvctrl);
 
-        return 0;
+        return pollflag;
 }
 
 static int try_alloc_port(struct ipath_devdata *dd, int port,