From 23fa18eaa71266feff7ba8d83022d9e1cc83c65a Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:42:03 +0000
Subject: [PATCH] disable pwm7
---
kernel/arch/arm64/kernel/signal32.c | 50 +++++++-------------------------------------------
1 files changed, 7 insertions(+), 43 deletions(-)
diff --git a/kernel/arch/arm64/kernel/signal32.c b/kernel/arch/arm64/kernel/signal32.c
index f2ac273..2f507f5 100644
--- a/kernel/arch/arm64/kernel/signal32.c
+++ b/kernel/arch/arm64/kernel/signal32.c
@@ -1,21 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Based on arch/arm/kernel/signal.c
*
* Copyright (C) 1995-2009 Russell King
* Copyright (C) 2012 ARM Ltd.
* Modified by Will Deacon <will.deacon@arm.com>
- *
- * 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.
- *
- * 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, see <http://www.gnu.org/licenses/>.
*/
#include <linux/compat.h>
@@ -234,7 +223,7 @@
err |= !valid_user_regs(®s->user_regs, current);
aux = (struct compat_aux_sigframe __user *) sf->uc.uc_regspace;
- if (err == 0)
+ if (err == 0 && system_supports_fpsimd())
err |= compat_restore_vfp_context(&aux->vfp);
return err;
@@ -258,7 +247,7 @@
frame = (struct compat_sigframe __user *)regs->compat_sp;
- if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
+ if (!access_ok(frame, sizeof (*frame)))
goto badframe;
if (compat_restore_sigframe(regs, frame))
@@ -289,7 +278,7 @@
frame = (struct compat_rt_sigframe __user *)regs->compat_sp;
- if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
+ if (!access_ok(frame, sizeof (*frame)))
goto badframe;
if (compat_restore_sigframe(regs, &frame->sig))
@@ -320,7 +309,7 @@
/*
* Check that we can actually write to the signal frame.
*/
- if (!access_ok(VERIFY_WRITE, frame, framesize))
+ if (!access_ok(frame, framesize))
frame = NULL;
return frame;
@@ -353,38 +342,13 @@
retcode = ptr_to_compat(ka->sa.sa_restorer);
} else {
/* Set up sigreturn pointer */
-#ifdef CONFIG_COMPAT_VDSO
- void *vdso_base = current->mm->context.vdso;
- void *vdso_trampoline;
-
- if (ka->sa.sa_flags & SA_SIGINFO) {
- if (thumb) {
- vdso_trampoline = VDSO_SYMBOL(vdso_base,
- compat_rt_sigreturn_thumb);
- } else {
- vdso_trampoline = VDSO_SYMBOL(vdso_base,
- compat_rt_sigreturn_arm);
- }
- } else {
- if (thumb) {
- vdso_trampoline = VDSO_SYMBOL(vdso_base,
- compat_sigreturn_thumb);
- } else {
- vdso_trampoline = VDSO_SYMBOL(vdso_base,
- compat_sigreturn_arm);
- }
- }
-
- retcode = ptr_to_compat(vdso_trampoline) + thumb;
-#else
unsigned int idx = thumb << 1;
if (ka->sa.sa_flags & SA_SIGINFO)
idx += 3;
- retcode = (unsigned long)current->mm->context.vdso +
+ retcode = (unsigned long)current->mm->context.sigpage +
(idx << 2) + thumb;
-#endif
}
regs->regs[0] = usig;
@@ -430,7 +394,7 @@
aux = (struct compat_aux_sigframe __user *) sf->uc.uc_regspace;
- if (err == 0)
+ if (err == 0 && system_supports_fpsimd())
err |= compat_preserve_vfp_context(&aux->vfp);
__put_user_error(0, &aux->end_magic, err);
--
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