From a156abb3cf14112d3aa3f3a9ba880d48cf064cef Mon Sep 17 00:00:00 2001
From: "Byczkowski, Jakub" <jakub.byczkowski@intel.com>
Date: Mon, 24 Jul 2017 07:46:24 -0700
Subject: [PATCH] IB/hfi1: Fix initialization failure for debug firmware
Loading debug signed firmware fails if started immediately after
failed attempt to load production firmware. A short delay is
required so add about a 100us delay after RSA check failure.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Easwar Hariharan <easwar.hariharan@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Jakub Byczkowski <jakub.byczkowski@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---
drivers/infiniband/hw/hfi1/firmware.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/infiniband/hw/hfi1/firmware.c b/drivers/infiniband/hw/hfi1/firmware.c
index 4042c11b2742b7..83efd6bec65722 100644
--- a/drivers/infiniband/hw/hfi1/firmware.c
+++ b/drivers/infiniband/hw/hfi1/firmware.c
@@ -615,6 +615,14 @@ retry:
fw_fabric_serdes_name = ALT_FW_FABRIC_NAME;
fw_sbus_name = ALT_FW_SBUS_NAME;
fw_pcie_serdes_name = ALT_FW_PCIE_NAME;
+
+ /*
+ * Add a delay before obtaining and loading debug firmware.
+ * Authorization will fail if the delay between firmware
+ * authorization events is shorter than 50us. Add 100us to
+ * make a delay time safe.
+ */
+ usleep_range(100, 120);
}
if (fw_sbus_load) {
--
GitLab