From 2ce1fe1ae2bcc685ec831db8c7df5208ce4b91b2 Mon Sep 17 00:00:00 2001
From: Alexander Usyskin <alexander.usyskin@intel.com>
Date: Wed, 20 Feb 2019 16:55:37 +0200
Subject: [PATCH] mei: hbm: clean the feature flags on link reset

commit 37fd0b623023484ef6df79ed46f21f06ecc611ff upstream.

The list of supported functions can be altered upon link reset,
clean the flags to allow correct selections of supported
features.

Cc: <stable@vger.kernel.org> v4.19+
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 drivers/misc/mei/hbm.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index e56f3e72d57a..d39cc2909474 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -986,29 +986,36 @@ static void mei_hbm_config_features(struct mei_device *dev)
 	    dev->version.minor_version >= HBM_MINOR_VERSION_PGI)
 		dev->hbm_f_pg_supported = 1;
 
+	dev->hbm_f_dc_supported = 0;
 	if (dev->version.major_version >= HBM_MAJOR_VERSION_DC)
 		dev->hbm_f_dc_supported = 1;
 
+	dev->hbm_f_ie_supported = 0;
 	if (dev->version.major_version >= HBM_MAJOR_VERSION_IE)
 		dev->hbm_f_ie_supported = 1;
 
 	/* disconnect on connect timeout instead of link reset */
+	dev->hbm_f_dot_supported = 0;
 	if (dev->version.major_version >= HBM_MAJOR_VERSION_DOT)
 		dev->hbm_f_dot_supported = 1;
 
 	/* Notification Event Support */
+	dev->hbm_f_ev_supported = 0;
 	if (dev->version.major_version >= HBM_MAJOR_VERSION_EV)
 		dev->hbm_f_ev_supported = 1;
 
 	/* Fixed Address Client Support */
+	dev->hbm_f_fa_supported = 0;
 	if (dev->version.major_version >= HBM_MAJOR_VERSION_FA)
 		dev->hbm_f_fa_supported = 1;
 
 	/* OS ver message Support */
+	dev->hbm_f_os_supported = 0;
 	if (dev->version.major_version >= HBM_MAJOR_VERSION_OS)
 		dev->hbm_f_os_supported = 1;
 
 	/* DMA Ring Support */
+	dev->hbm_f_dr_supported = 0;
 	if (dev->version.major_version > HBM_MAJOR_VERSION_DR ||
 	    (dev->version.major_version == HBM_MAJOR_VERSION_DR &&
 	     dev->version.minor_version >= HBM_MINOR_VERSION_DR))
-- 
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