linux-kernel - [PATCH 3/4] csky: Fixup remove duplicate irq

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Message-Id: <20200513101617.11588-3-guoren@kernel.org>
Date:   Wed, 13 May 2020 18:16:16 +0800
From:   guoren@...nel.org
To:     linux-csky@...r.kernel.org
Cc:     arnd@...db.de, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org, guoren@...nel.org,
        Liu Yibin <jiulong@...ux.alibaba.com>,
        Guo Ren <guoren@...ux.alibaba.com>
Subject: [PATCH 3/4] csky: Fixup remove duplicate irq_disable

From: Liu Yibin <jiulong@...ux.alibaba.com>

Interrupt has been disabled in __schedule() with local_irq_disable()
and enabled in finish_task_switch->finish_lock_switch() with
local_irq_enabled(), So needn't to disable irq here.

Signed-off-by: Liu Yibin <jiulong@...ux.alibaba.com>
Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
---
 arch/csky/kernel/entry.S | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/csky/kernel/entry.S b/arch/csky/kernel/entry.S
index 364819536f2e..6a468ff75432 100644
--- a/arch/csky/kernel/entry.S
+++ b/arch/csky/kernel/entry.S
@@ -332,8 +332,6 @@ ENTRY(__switch_to)
 
 	mfcr	a2, psr			/* Save PSR value */
 	stw	a2, (a3, THREAD_SR)	/* Save PSR in task struct */
-	bclri	a2, 6			/* Disable interrupts */
-	mtcr	a2, psr
 
 	SAVE_SWITCH_STACK
 
-- 
2.17.0