linux-kernel - [PATCH 05/10] MIPS: CPS: skip Config1 presence check

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Date:	Tue, 22 Sep 2015 11:12:13 -0700
From:	Paul Burton <paul.burton@...tec.com>
To:	<linux-mips@...ux-mips.org>
CC:	Paul Burton <paul.burton@...tec.com>,
	Markos Chandras <markos.chandras@...tec.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 05/10] MIPS: CPS: skip Config1 presence check

The Config1 register is architecturally defined as required, and is thus
present in all systems which may make use of cps-vec.S. Skip the check
for its presence via the Config.M bit.

Signed-off-by: Paul Burton <paul.burton@...tec.com>
---

 arch/mips/kernel/cps-vec.S | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/mips/kernel/cps-vec.S b/arch/mips/kernel/cps-vec.S
index 5407ce4..84af91a 100644
--- a/arch/mips/kernel/cps-vec.S
+++ b/arch/mips/kernel/cps-vec.S
@@ -50,9 +50,7 @@
 	 * MT is not supported then branch to nomt.
 	 */
 	.macro	has_mt	dest, nomt
-	mfc0	\dest, CP0_CONFIG
-	bgez	\dest, \nomt
-	 mfc0	\dest, CP0_CONFIG, 1
+	mfc0	\dest, CP0_CONFIG, 1
 	bgez	\dest, \nomt
 	 mfc0	\dest, CP0_CONFIG, 2
 	bgez	\dest, \nomt
-- 
2.5.3

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