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| author |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-07-20 07:07:56 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-07-20 07:07:56 +0300 |
| commit | c39f2d9db0fd81ea20bb5cce9b3f082ca63753e2 (patch) | |
| tree | 8e80ed5601b4fb8880a2ca8e08802bc8b1f850bd /arch/riscv/kernel/signal.c | |
| parent | Merge branch 'next' into for-linus (diff) | |
| parent | Input: alps - fix a mismatch between a condition check and its comment (diff) | |
| download | linux-dev-c39f2d9db0fd81ea20bb5cce9b3f082ca63753e2.tar.xz linux-dev-c39f2d9db0fd81ea20bb5cce9b3f082ca63753e2.zip | |
Merge branch 'next' into for-linus
Prepare second round of input updates for 5.3 merge window.
Diffstat (limited to 'arch/riscv/kernel/signal.c')
| -rw-r--r-- | arch/riscv/kernel/signal.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/arch/riscv/kernel/signal.c b/arch/riscv/kernel/signal.c index 837e1646091a..1fe1b02e44d0 100644 --- a/arch/riscv/kernel/signal.c +++ b/arch/riscv/kernel/signal.c @@ -1,22 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. * Chen Liqin <liqin.chen@sunplusct.com> * Lennox Wu <lennox.wu@sunplusct.com> * Copyright (C) 2012 Regents of the University of California - * - * 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. - * - * 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 the file COPYING, or write - * to the Free Software Foundation, Inc., */ #include <linux/signal.h> @@ -234,6 +221,9 @@ static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) /* Are we from a system call? */ if (regs->scause == EXC_SYSCALL) { + /* Avoid additional syscall restarting via ret_from_exception */ + regs->scause = -1UL; + /* If so, check system call restarting.. */ switch (regs->a0) { case -ERESTART_RESTARTBLOCK: @@ -272,6 +262,9 @@ static void do_signal(struct pt_regs *regs) /* Did we come from a system call? */ if (regs->scause == EXC_SYSCALL) { + /* Avoid additional syscall restarting via ret_from_exception */ + regs->scause = -1UL; + /* Restart the system call - no handlers present */ switch (regs->a0) { case -ERESTARTNOHAND: |