clear-pkgs-linux-iot-lts2018/0813-media-intel-ipu4-VIRT-Fix-1st-run-hang-and-3rd-run-c.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: spoluri <sarat.chandra.poluri@intel.com>
Date: Mon, 5 Nov 2018 15:52:27 -0800
Subject: [PATCH] media: intel-ipu4: [VIRT] Fix 1st run hang and 3rd run crash
 issue when running single PG use cases.

The issue was the fd created in SOS kernel driver is not valid in UOS and hence the fd does not get closed. Hence, the fd never gets released in SOS and over successive runs, the need to expand file descriptor numbers causes the eventual crash. This requires us to close the fd in SOS using sys_close. There is potential for issue in some corner cases in UOS.

Change-Id: Icbb9d2e96dbb2061c497b5415f5f7bdbd1091c44
Tracked-On: OAM-64123
Tracked-On: OAM-64294
Tracked-On: OAM-64937
Tracked-On: OLINUX-2973
Tracked-On: OLINUX-3042
Signed-off-by: spoluri <sarat.chandra.poluri@intel.com>
---
 drivers/media/pci/intel/virtio/intel-ipu4-virtio-be-psys.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/pci/intel/virtio/intel-ipu4-virtio-be-psys.c b/drivers/media/pci/intel/virtio/intel-ipu4-virtio-be-psys.c
index e906f14b42bf..309929a9f530 100644
--- a/drivers/media/pci/intel/virtio/intel-ipu4-virtio-be-psys.c
+++ b/drivers/media/pci/intel/virtio/intel-ipu4-virtio-be-psys.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2018 Intel Corporation
  */
 
+#include <linux/syscalls.h>
 #include "ipu-psys.h"
 
 #include <linux/vhm/acrn_vhm_mm.h>
@@ -25,6 +26,10 @@ int process_psys_unmapbuf(struct ipu4_virtio_req_info *req_info)
 
 	status = fh->vfops->unmap_buf(fh, req_info);
 
+	/*Only doing this in mediated mode because 
+	fd passed from SOS to user space is invalid in UOS.*/
+	ksys_close(req_info->request->op[0]);
+
 	if (status)
 		return IPU4_REQ_ERROR;
 	else
-- 
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