linux-kernel - [PATCH 5.4 055/142] csky: Fixup msa highest 3 bits mask

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Date:   Mon,  1 Jun 2020 19:53:33 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Liu Yibin <jiulong@...ux.alibaba.com>,
        Guo Ren <guoren@...ux.alibaba.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 055/142] csky: Fixup msa highest 3 bits mask

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

[ Upstream commit 165f2d2858013253042809df082b8df7e34e86d7 ]

Just as comment mentioned, the msa format:

 cr<30/31, 15> MSA register format:
 31 - 29 | 28 - 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
   BA     Reserved  SH  WA  B   SO SEC  C   D   V

So we should shift 29 bits not 28 bits for mask

Signed-off-by: Liu Yibin <jiulong@...ux.alibaba.com>
Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/csky/abiv1/inc/abi/entry.h | 4 ++--
 arch/csky/abiv2/inc/abi/entry.h | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/csky/abiv1/inc/abi/entry.h b/arch/csky/abiv1/inc/abi/entry.h
index 5056ebb902d1..61d94ec7dd16 100644
--- a/arch/csky/abiv1/inc/abi/entry.h
+++ b/arch/csky/abiv1/inc/abi/entry.h
@@ -167,8 +167,8 @@
 	 *   BA     Reserved  C   D   V
 	 */
 	cprcr	r6, cpcr30
-	lsri	r6, 28
-	lsli	r6, 28
+	lsri	r6, 29
+	lsli	r6, 29
 	addi	r6, 0xe
 	cpwcr	r6, cpcr30
 
diff --git a/arch/csky/abiv2/inc/abi/entry.h b/arch/csky/abiv2/inc/abi/entry.h
index 111973c6c713..9023828ede97 100644
--- a/arch/csky/abiv2/inc/abi/entry.h
+++ b/arch/csky/abiv2/inc/abi/entry.h
@@ -225,8 +225,8 @@
 	 */
 	mfcr	r6, cr<30, 15> /* Get MSA0 */
 2:
-	lsri	r6, 28
-	lsli	r6, 28
+	lsri	r6, 29
+	lsli	r6, 29
 	addi	r6, 0x1ce
 	mtcr	r6, cr<30, 15> /* Set MSA0 */
 
-- 
2.25.1