linux-kernel - [3.16.y-ckt stable] Patch "MIPS: CPS: #ifdef on CONFIG_MIPS_MT_SMP rather than CONFIG_MIPS

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Message-Id: <1445438102-30928-1-git-send-email-luis.henriques@canonical.com>
Date:	Wed, 21 Oct 2015 15:35:02 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	Paul Burton <paul.burton@...tec.com>
Cc:	Markos Chandras <markos.chandras@...tec.com>,
	James Hogan <james.hogan@...tec.com>,
	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org,
	Ralf Baechle <ralf@...ux-mips.org>,
	Luis Henriques <luis.henriques@...onical.com>,
	kernel-team@...ts.ubuntu.com
Subject: [3.16.y-ckt stable] Patch "MIPS: CPS: #ifdef on CONFIG_MIPS_MT_SMP rather than CONFIG_MIPS_MT" has been added to staging queue

This is a note to let you know that I have just added a patch titled

    MIPS: CPS: #ifdef on CONFIG_MIPS_MT_SMP rather than CONFIG_MIPS_MT

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt19.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From a97cea8b5fa6b68437570749d46fdc7f8605c169 Mon Sep 17 00:00:00 2001
From: Paul Burton <paul.burton@...tec.com>
Date: Wed, 5 Aug 2015 15:42:38 -0700
Subject: MIPS: CPS: #ifdef on CONFIG_MIPS_MT_SMP rather than CONFIG_MIPS_MT

commit 7a63076d9a31a6c2073da45021eeb4f89d2a8b56 upstream.

The CONFIG_MIPS_MT symbol can be selected by CONFIG_MIPS_VPE_LOADER in
addition to CONFIG_MIPS_MT_SMP. We only want MT code in the CPS SMP boot
vector if we're using MT for SMP. Thus switch the config symbol we ifdef
against to CONFIG_MIPS_MT_SMP.

Signed-off-by: Paul Burton <paul.burton@...tec.com>
Cc: Markos Chandras <markos.chandras@...tec.com>
Cc: James Hogan <james.hogan@...tec.com>
Cc: linux-mips@...ux-mips.org
Cc: linux-kernel@...r.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10867/
Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 arch/mips/kernel/cps-vec.S | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/mips/kernel/cps-vec.S b/arch/mips/kernel/cps-vec.S
index acd9bd6daf99..05a96be42075 100644
--- a/arch/mips/kernel/cps-vec.S
+++ b/arch/mips/kernel/cps-vec.S
@@ -224,7 +224,7 @@ LEAF(excep_ejtag)
 	END(excep_ejtag)

 LEAF(mips_cps_core_init)
-#ifdef CONFIG_MIPS_MT
+#ifdef CONFIG_MIPS_MT_SMP
 	/* Check that the core implements the MT ASE */
 	has_mt	t0, 3f

@@ -310,7 +310,7 @@ LEAF(mips_cps_boot_vpes)

 	/* Calculate this VPEs ID. If the core doesn't support MT use 0 */
 	li	t9, 0
-#ifdef CONFIG_MIPS_MT
+#ifdef CONFIG_MIPS_MT_SMP
 	has_mt	t6, 1f

 	/* Find the number of VPEs present in the core */
@@ -338,7 +338,7 @@ LEAF(mips_cps_boot_vpes)
 	lw	t7, COREBOOTCFG_VPECONFIG(t0)
 	addu	v0, v0, t7

-#ifdef CONFIG_MIPS_MT
+#ifdef CONFIG_MIPS_MT_SMP

 	/* If the core doesn't support MT then return */
 	bnez	t6, 1f
@@ -451,7 +451,7 @@ LEAF(mips_cps_boot_vpes)

 2:	.set	pop

-#endif /* CONFIG_MIPS_MT */
+#endif /* CONFIG_MIPS_MT_SMP */

 	/* Return */
 	jr	ra
--
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