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/arch/hexagon/kernel/process.c | 37 +++++++------------------------------
1 files changed, 7 insertions(+), 30 deletions(-)
diff --git a/kernel/arch/hexagon/kernel/process.c b/kernel/arch/hexagon/kernel/process.c
index 656050c..c61165c 100644
--- a/kernel/arch/hexagon/kernel/process.c
+++ b/kernel/arch/hexagon/kernel/process.c
@@ -1,21 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Process creation support for Hexagon
*
* Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
*/
#include <linux/sched.h>
@@ -57,14 +44,14 @@
{
__vmwait();
/* interrupts wake us up, but irqs are still disabled */
- local_irq_enable();
+ raw_local_irq_enable();
}
/*
* Copy architecture-specific thread state
*/
-int copy_thread(unsigned long clone_flags, unsigned long usp,
- unsigned long arg, struct task_struct *p)
+int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long arg,
+ struct task_struct *p, unsigned long tls)
{
struct thread_info *ti = task_thread_info(p);
struct hexagon_switch_stack *ss;
@@ -86,7 +73,7 @@
sizeof(*ss));
ss->lr = (unsigned long)ret_from_fork;
p->thread.switch_sp = ss;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) {
memset(childregs, 0, sizeof(struct pt_regs));
/* r24 <- fn, r25 <- arg */
ss->r24 = usp;
@@ -113,7 +100,7 @@
* ugp is used to provide TLS support.
*/
if (clone_flags & CLONE_SETTLS)
- childregs->ugp = childregs->r04;
+ childregs->ugp = tls;
/*
* Parent sees new pid -- not necessary, not even possible at
@@ -167,15 +154,6 @@
}
/*
- * Required placeholder.
- */
-int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
-{
- return 0;
-}
-
-
-/*
* Called on the exit path of event entry; see vm_entry.S
*
* Interrupts will already be disabled.
@@ -196,13 +174,12 @@
return 1;
}
- if (thread_info_flags & _TIF_SIGPENDING) {
+ if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)) {
do_signal(regs);
return 1;
}
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
return 1;
}
--
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