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@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11204/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/kernel/cps-vec.S b/arch/mips/kernel/cps-vec.S
index 2164dc4deace195fa8abb66879c2e5d03f8b4cf3..8fd5a276cad23493f6500d0f4b01515ee20062f5 100644 (file)
--- 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