From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/drivers/media/usb/uvc/uvc_ctrl.c | 68 ++++++++++++++++-----------------
1 files changed, 33 insertions(+), 35 deletions(-)
diff --git a/kernel/drivers/media/usb/uvc/uvc_ctrl.c b/kernel/drivers/media/usb/uvc/uvc_ctrl.c
index cb60464..5e0acab 100644
--- a/kernel/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/kernel/drivers/media/usb/uvc/uvc_ctrl.c
@@ -1,16 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* uvc_ctrl.c -- USB Video Class driver - Controls
*
* Copyright (C) 2005-2010
* Laurent Pinchart (laurent.pinchart@ideasonboard.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
*/
+#include <asm/barrier.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/module.h>
@@ -38,7 +34,7 @@
* Controls
*/
-static struct uvc_control_info uvc_ctrls[] = {
+static const struct uvc_control_info uvc_ctrls[] = {
{
.entity = UVC_GUID_UVC_PROCESSING,
.selector = UVC_PU_BRIGHTNESS_CONTROL,
@@ -354,13 +350,13 @@
},
};
-static struct uvc_menu_info power_line_frequency_controls[] = {
+static const struct uvc_menu_info power_line_frequency_controls[] = {
{ 0, "Disabled" },
{ 1, "50 Hz" },
{ 2, "60 Hz" },
};
-static struct uvc_menu_info exposure_auto_controls[] = {
+static const struct uvc_menu_info exposure_auto_controls[] = {
{ 2, "Auto Mode" },
{ 1, "Manual Mode" },
{ 4, "Shutter Priority Mode" },
@@ -421,7 +417,7 @@
data[first+1] = min_t(int, abs(value), 0xff);
}
-static struct uvc_control_mapping uvc_ctrl_mappings[] = {
+static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
{
.id = V4L2_CID_BRIGHTNESS,
.name = "Brightness",
@@ -982,7 +978,7 @@
s32 value = mapping->get(mapping, UVC_GET_CUR, data);
if (mapping->v4l2_type == V4L2_CTRL_TYPE_MENU) {
- struct uvc_menu_info *menu = mapping->menu_info;
+ const struct uvc_menu_info *menu = mapping->menu_info;
unsigned int i;
for (i = 0; i < mapping->menu_count; ++i, ++menu) {
@@ -1029,13 +1025,13 @@
{
struct uvc_control_mapping *master_map = NULL;
struct uvc_control *master_ctrl = NULL;
- struct uvc_menu_info *menu;
+ const struct uvc_menu_info *menu;
unsigned int i;
memset(v4l2_ctrl, 0, sizeof(*v4l2_ctrl));
v4l2_ctrl->id = mapping->id;
v4l2_ctrl->type = mapping->v4l2_type;
- strlcpy(v4l2_ctrl->name, mapping->name, sizeof(v4l2_ctrl->name));
+ strscpy(v4l2_ctrl->name, mapping->name, sizeof(v4l2_ctrl->name));
v4l2_ctrl->flags = 0;
if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR))
@@ -1149,7 +1145,7 @@
int uvc_query_v4l2_menu(struct uvc_video_chain *chain,
struct v4l2_querymenu *query_menu)
{
- struct uvc_menu_info *menu_info;
+ const struct uvc_menu_info *menu_info;
struct uvc_control_mapping *mapping;
struct uvc_control *ctrl;
u32 index = query_menu->index;
@@ -1195,7 +1191,7 @@
}
}
- strlcpy(query_menu->name, menu_info->name, sizeof(query_menu->name));
+ strscpy(query_menu->name, menu_info->name, sizeof(query_menu->name));
done:
mutex_unlock(&chain->ctrl_mutex);
@@ -1280,17 +1276,12 @@
uvc_ctrl_send_event(chain, handle, ctrl, mapping, val, changes);
}
-static void uvc_ctrl_status_event_work(struct work_struct *work)
+void uvc_ctrl_status_event(struct uvc_video_chain *chain,
+ struct uvc_control *ctrl, const u8 *data)
{
- struct uvc_device *dev = container_of(work, struct uvc_device,
- async_ctrl.work);
- struct uvc_ctrl_work *w = &dev->async_ctrl;
- struct uvc_video_chain *chain = w->chain;
struct uvc_control_mapping *mapping;
- struct uvc_control *ctrl = w->ctrl;
struct uvc_fh *handle;
unsigned int i;
- int ret;
mutex_lock(&chain->ctrl_mutex);
@@ -1298,7 +1289,7 @@
ctrl->handle = NULL;
list_for_each_entry(mapping, &ctrl->info.mappings, list) {
- s32 value = __uvc_ctrl_get_value(mapping, w->data);
+ s32 value = __uvc_ctrl_get_value(mapping, data);
/*
* handle may be NULL here if the device sends auto-update
@@ -1317,6 +1308,20 @@
}
mutex_unlock(&chain->ctrl_mutex);
+}
+
+static void uvc_ctrl_status_event_work(struct work_struct *work)
+{
+ struct uvc_device *dev = container_of(work, struct uvc_device,
+ async_ctrl.work);
+ struct uvc_ctrl_work *w = &dev->async_ctrl;
+ int ret;
+
+ uvc_ctrl_status_event(w->chain, w->ctrl, w->data);
+
+ /* The barrier is needed to synchronize with uvc_status_stop(). */
+ if (smp_load_acquire(&dev->flush_status))
+ return;
/* Resubmit the URB. */
w->urb->interval = dev->int_ep->desc.bInterval;
@@ -1326,8 +1331,8 @@
ret);
}
-bool uvc_ctrl_status_event(struct urb *urb, struct uvc_video_chain *chain,
- struct uvc_control *ctrl, const u8 *data)
+bool uvc_ctrl_status_event_async(struct urb *urb, struct uvc_video_chain *chain,
+ struct uvc_control *ctrl, const u8 *data)
{
struct uvc_device *dev = chain->dev;
struct uvc_ctrl_work *w = &dev->async_ctrl;
@@ -2025,18 +2030,14 @@
static int uvc_ctrl_add_info(struct uvc_device *dev, struct uvc_control *ctrl,
const struct uvc_control_info *info)
{
- int ret = 0;
-
ctrl->info = *info;
INIT_LIST_HEAD(&ctrl->info.mappings);
/* Allocate an array to save control values (cur, def, max, etc.) */
ctrl->uvc_data = kzalloc(ctrl->info.size * UVC_CTRL_DATA_LAST + 1,
GFP_KERNEL);
- if (ctrl->uvc_data == NULL) {
- ret = -ENOMEM;
- goto done;
- }
+ if (!ctrl->uvc_data)
+ return -ENOMEM;
ctrl->initialized = 1;
@@ -2044,10 +2045,7 @@
"entity %u\n", ctrl->info.entity, ctrl->info.selector,
dev->udev->devpath, ctrl->entity->id);
-done:
- if (ret < 0)
- kfree(ctrl->uvc_data);
- return ret;
+ return 0;
}
/*
--
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