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: 9+ 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
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