From 5e2d6764a729bf8d43894b0368b0ae11a19485c0 Mon Sep 17 00:00:00 2001 From: Alex Estrin Date: Mon, 24 Jul 2017 07:46:36 -0700 Subject: IB/hfi1: Verify port data VLs credits on transition to Armed There is a window where the FM can read the buffer control table and decide not to program buffers. When a port goes down, the code clears the table and if it is not programmed, posted SDMA descriptors will never complete due to no buffer credits. Reviewed-by: Mike Marciniszyn Signed-off-by: Alex Estrin Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford --- drivers/infiniband/hw/hfi1/intr.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/infiniband/hw/hfi1/intr.c') diff --git a/drivers/infiniband/hw/hfi1/intr.c b/drivers/infiniband/hw/hfi1/intr.c index 9469be9940e0..96845dfed5c5 100644 --- a/drivers/infiniband/hw/hfi1/intr.c +++ b/drivers/infiniband/hw/hfi1/intr.c @@ -164,6 +164,7 @@ void handle_linkup_change(struct hfi1_devdata *dd, u32 linkup) ppd->linkup = 0; /* clear HW details of the previous connection */ + ppd->actual_vls_operational = 0; reset_link_credits(dd); /* freeze after a link down to guarantee a clean egress */ -- cgit v1.2.3