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/arch/um/kernel/maccess.c | 15 +++++----------
1 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/kernel/arch/um/kernel/maccess.c b/kernel/arch/um/kernel/maccess.c
index 1f3d5c4..8ccd568 100644
--- a/kernel/arch/um/kernel/maccess.c
+++ b/kernel/arch/um/kernel/maccess.c
@@ -1,24 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2013 Richard Weinberger <richrd@nod.at>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/uaccess.h>
#include <linux/kernel.h>
#include <os.h>
-long probe_kernel_read(void *dst, const void *src, size_t size)
+bool copy_from_kernel_nofault_allowed(const void *src, size_t size)
{
void *psrc = (void *)rounddown((unsigned long)src, PAGE_SIZE);
if ((unsigned long)src < PAGE_SIZE || size <= 0)
- return -EFAULT;
-
+ return false;
if (os_mincore(psrc, size + src - psrc) <= 0)
- return -EFAULT;
-
- return __probe_kernel_read(dst, src, size);
+ return false;
+ return true;
}
--
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