From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/drivers/misc/mei/init.c | 40 ++++++++++++++++------------------------
1 files changed, 16 insertions(+), 24 deletions(-)
diff --git a/kernel/drivers/misc/mei/init.c b/kernel/drivers/misc/mei/init.c
index 4888ebc..bcee777 100644
--- a/kernel/drivers/misc/mei/init.c
+++ b/kernel/drivers/misc/mei/init.c
@@ -1,17 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
/*
- *
+ * Copyright (c) 2012-2019, Intel Corporation. All rights reserved.
* Intel Management Engine Interface (Intel MEI) Linux driver
- * Copyright (c) 2003-2012, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
*/
#include <linux/export.h>
@@ -133,12 +123,12 @@
/* enter reset flow */
interrupts_enabled = state != MEI_DEV_POWER_DOWN;
- dev->dev_state = MEI_DEV_RESETTING;
+ mei_set_devstate(dev, MEI_DEV_RESETTING);
dev->reset_count++;
if (dev->reset_count > MEI_MAX_CONSEC_RESET) {
dev_err(dev->dev, "reset: reached maximal consecutive resets: disabling the device\n");
- dev->dev_state = MEI_DEV_DISABLED;
+ mei_set_devstate(dev, MEI_DEV_DISABLED);
return -ENODEV;
}
@@ -151,7 +141,7 @@
mei_hbm_reset(dev);
- dev->rd_msg_hdr = 0;
+ memset(dev->rd_msg_hdr, 0, sizeof(dev->rd_msg_hdr));
if (ret) {
dev_err(dev->dev, "hw_reset failed ret = %d\n", ret);
@@ -160,7 +150,7 @@
if (state == MEI_DEV_POWER_DOWN) {
dev_dbg(dev->dev, "powering down: end of reset\n");
- dev->dev_state = MEI_DEV_DISABLED;
+ mei_set_devstate(dev, MEI_DEV_DISABLED);
return 0;
}
@@ -172,11 +162,11 @@
dev_dbg(dev->dev, "link is established start sending messages.\n");
- dev->dev_state = MEI_DEV_INIT_CLIENTS;
+ mei_set_devstate(dev, MEI_DEV_INIT_CLIENTS);
ret = mei_hbm_start_req(dev);
if (ret) {
dev_err(dev->dev, "hbm_start failed ret = %d\n", ret);
- dev->dev_state = MEI_DEV_RESETTING;
+ mei_set_devstate(dev, MEI_DEV_RESETTING);
return ret;
}
@@ -200,13 +190,15 @@
/* acknowledge interrupt and stop interrupts */
mei_clear_interrupts(dev);
- mei_hw_config(dev);
+ ret = mei_hw_config(dev);
+ if (ret)
+ goto err;
dev_dbg(dev->dev, "reset in start the mei device.\n");
dev->reset_count = 0;
do {
- dev->dev_state = MEI_DEV_INITIALIZING;
+ mei_set_devstate(dev, MEI_DEV_INITIALIZING);
ret = mei_reset(dev);
if (ret == -ENODEV || dev->dev_state == MEI_DEV_DISABLED) {
@@ -241,7 +233,7 @@
return 0;
err:
dev_err(dev->dev, "link layer initialization failed.\n");
- dev->dev_state = MEI_DEV_DISABLED;
+ mei_set_devstate(dev, MEI_DEV_DISABLED);
mutex_unlock(&dev->device_lock);
return -ENODEV;
}
@@ -260,7 +252,7 @@
mutex_lock(&dev->device_lock);
- dev->dev_state = MEI_DEV_POWER_UP;
+ mei_set_devstate(dev, MEI_DEV_POWER_UP);
dev->reset_count = 0;
err = mei_reset(dev);
@@ -311,7 +303,7 @@
dev_dbg(dev->dev, "stopping the device.\n");
mutex_lock(&dev->device_lock);
- dev->dev_state = MEI_DEV_POWER_DOWN;
+ mei_set_devstate(dev, MEI_DEV_POWER_DOWN);
mutex_unlock(&dev->device_lock);
mei_cl_bus_remove_devices(dev);
@@ -324,7 +316,7 @@
mei_reset(dev);
/* move device to disabled state unconditionally */
- dev->dev_state = MEI_DEV_DISABLED;
+ mei_set_devstate(dev, MEI_DEV_DISABLED);
mutex_unlock(&dev->device_lock);
}
--
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