1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Copyright (C) 2020-21 Intel Corporation.
 4 */
 5
 6#include <linux/device.h>
 7#include <linux/kobject.h>
 8#include <linux/slab.h>
 9
10#include "iosm_ipc_uevent.h"
11
12/* Update the uevent in work queue context */
13static void ipc_uevent_work(struct work_struct *data)
14{
15	struct ipc_uevent_info *info;
16	char *envp[2] = { NULL, NULL };
17
18	info = container_of(data, struct ipc_uevent_info, work);
19
20	envp[0] = info->uevent;
21
22	if (kobject_uevent_env(&info->dev->kobj, KOBJ_CHANGE, envp))
23		pr_err("uevent %s failed to sent", info->uevent);
24
25	kfree(info);
26}
27
28void ipc_uevent_send(struct device *dev, char *uevent)
29{
30	struct ipc_uevent_info *info = kzalloc(sizeof(*info), GFP_ATOMIC);
31
32	if (!info)
33		return;
34
35	/* Initialize the kernel work queue */
36	INIT_WORK(&info->work, ipc_uevent_work);
37
38	/* Store the device and event information */
39	info->dev = dev;
40	snprintf(info->uevent, MAX_UEVENT_LEN, "IOSM_EVENT=%s", uevent);
41
42	/* Schedule uevent in process context using work queue */
43	schedule_work(&info->work);
44}