From e24ca92599cb73ea6d2f768632f4e30b6f9983cf Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Thu, 23 Jul 2020 19:29:25 +0200
Subject: [PATCH] Revert "mei: Avoid the use of one-element arrays"
Git-commit: e24ca92599cb73ea6d2f768632f4e30b6f9983cf
Patch-mainline: v5.9-rc1
References: jsc#SLE-13387

This reverts commit 3c3b7ddef7879abb2c42422e898145826c79e5f0, as it
turns out Tomas made a better series of patches for this same issue.

Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/misc/mei/hbm.c | 4 ++--
 drivers/misc/mei/hw.h  | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index f020d5594154..a44094cdbc36 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -408,14 +408,14 @@ static int mei_hbm_add_cl_resp(struct mei_device *dev, u8 addr, u8 status)
 {
 	struct mei_msg_hdr mei_hdr;
 	struct hbm_add_client_response resp;
-	const size_t len = sizeof(resp);
+	const size_t len = sizeof(struct hbm_add_client_response);
 	int ret;
 
 	dev_dbg(dev->dev, "adding client response\n");
 
 	mei_hbm_hdr(&mei_hdr, len);
 
-	memset(&resp, 0, len);
+	memset(&resp, 0, sizeof(struct hbm_add_client_response));
 	resp.hbm_cmd = MEI_HBM_ADD_CLIENT_RES_CMD;
 	resp.me_addr = addr;
 	resp.status  = status;
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h
index 8c0297f0e7f3..b1a8d5ec88b3 100644
--- a/drivers/misc/mei/hw.h
+++ b/drivers/misc/mei/hw.h
@@ -346,13 +346,13 @@ struct hbm_add_client_request {
  * @hbm_cmd: bus message command header
  * @me_addr: address of the client in ME
  * @status: if HBMS_SUCCESS then the client can now accept connections.
- * @reserved: reserved for alignment.
+ * @reserved: reserved
  */
 struct hbm_add_client_response {
 	u8 hbm_cmd;
 	u8 me_addr;
 	u8 status;
-	u8 reserved;
+	u8 reserved[1];
 } __packed;
 
 /**
@@ -461,7 +461,7 @@ struct hbm_notification {
 	u8 hbm_cmd;
 	u8 me_addr;
 	u8 host_addr;
-	u8 reserved;
+	u8 reserved[1];
 } __packed;
 
 /**
-- 
2.16.4