From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Max Filippov <jcmvbkbc@gmail.com>,
Sasha Levin <sashal@kernel.org>,
linux-xtensa@linux-xtensa.org
Subject: [PATCH AUTOSEL 4.4 6/9] xtensa: fix initialization of pt_regs::syscall in start_thread
Date: Fri, 26 Apr 2019 21:43:51 -0400 [thread overview]
Message-ID: <20190427014356.8940-6-sashal@kernel.org> (raw)
In-Reply-To: <20190427014356.8940-1-sashal@kernel.org>
From: Max Filippov <jcmvbkbc@gmail.com>
[ Upstream commit 2663147dc7465cb29040a05cc4286fdd839978b5 ]
New pt_regs should indicate that there's no syscall, not that there's
syscall #0. While at it wrap macro body in do/while and parenthesize
macro arguments.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/xtensa/include/asm/processor.h | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index d3ac00fcb15c..9e3b4e75094d 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -183,15 +183,18 @@ struct thread_struct {
/* Clearing a0 terminates the backtrace. */
#define start_thread(regs, new_pc, new_sp) \
- memset(regs, 0, sizeof(*regs)); \
- regs->pc = new_pc; \
- regs->ps = USER_PS_VALUE; \
- regs->areg[1] = new_sp; \
- regs->areg[0] = 0; \
- regs->wmask = 1; \
- regs->depc = 0; \
- regs->windowbase = 0; \
- regs->windowstart = 1;
+ do { \
+ memset((regs), 0, sizeof(*(regs))); \
+ (regs)->pc = (new_pc); \
+ (regs)->ps = USER_PS_VALUE; \
+ (regs)->areg[1] = (new_sp); \
+ (regs)->areg[0] = 0; \
+ (regs)->wmask = 1; \
+ (regs)->depc = 0; \
+ (regs)->windowbase = 0; \
+ (regs)->windowstart = 1; \
+ (regs)->syscall = NO_SYSCALL; \
+ } while (0)
/* Forward declaration */
struct task_struct;
--
2.19.1
next prev parent reply other threads:[~2019-04-27 1:44 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-27 1:43 [PATCH AUTOSEL 4.4 1/9] ASoC: ab8500: Mark expected switch fall-through Sasha Levin
2019-04-27 1:43 ` [PATCH AUTOSEL 4.4 2/9] ASoC:soc-pcm:fix a codec fixup issue in TDM case Sasha Levin
2019-04-27 1:43 ` [PATCH AUTOSEL 4.4 3/9] ASoC: cs4270: Set auto-increment bit for register writes Sasha Levin
2019-04-27 1:43 ` [PATCH AUTOSEL 4.4 4/9] ASoC: tlv320aic32x4: Fix Common Pins Sasha Levin
2019-04-27 1:43 ` [PATCH AUTOSEL 4.4 5/9] perf/x86/intel: Fix handling of wakeup_events for multi-entry PEBS Sasha Levin
2019-04-27 1:43 ` Sasha Levin [this message]
2019-04-27 1:43 ` [PATCH AUTOSEL 4.4 7/9] scsi: csiostor: fix missing data copy in csio_scsi_err_handler() Sasha Levin
2019-04-27 1:43 ` [PATCH AUTOSEL 4.4 8/9] NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family Sasha Levin
2019-04-27 1:43 ` [PATCH AUTOSEL 4.4 9/9] iommu/amd: Set exclusion range correctly Sasha Levin
2019-04-27 1:43 ` Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190427014356.8940-6-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=jcmvbkbc@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-xtensa@linux-xtensa.org \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.