[PATCH 0/5] ARM: shmobile: rcar-gen2: Remove legacy SMP fallback code

[PATCH 0/5] ARM: shmobile: rcar-gen2: Remove legacy SMP fallback code

[Geert Uytterhoeven]

	Hi Simon, Magnus,

R-Car H2 and M2-W have been supporting SMP enablement from DT using the
"renesas,apmu" enable-method since v4.8.  A legacy fallback was left in
place for backwards compatibility with old DTBs.

This patch series removes the legacy SMP fallbacks for R-Car H2 and
M2-W, and consolidates their support in the common R-Car Gen2 machine
definition.

For testing, this series is available in the
topic/rcar2-legacy-smp-removal-v1 branch of my renesas-drivers git
repository at
git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git.

Thanks for applying!

Geert Uytterhoeven (5):
  ARM: shmobile: r8a7790: Remove legacy SMP fallback code
  ARM: shmobile: r8a7790: Use common R-Car Gen2 machine definition
  ARM: shmobile: r8a7791: Remove legacy SMP fallback code
  ARM: shmobile: r8a7791: Use common R-Car Gen2 machine definition
  ARM: shmobile: Remove unused shmobile_smp_init_fallback_ops()

 arch/arm/mach-shmobile/Makefile          |  4 --
 arch/arm/mach-shmobile/common.h          |  1 -
 arch/arm/mach-shmobile/platsmp.c         |  9 ----
 arch/arm/mach-shmobile/r8a7790.h         |  7 ----
 arch/arm/mach-shmobile/r8a7791.h         |  7 ----
 arch/arm/mach-shmobile/setup-r8a7790.c   | 38 -----------------
 arch/arm/mach-shmobile/setup-r8a7791.c   | 39 ------------------
 arch/arm/mach-shmobile/setup-rcar-gen2.c |  6 +--
 arch/arm/mach-shmobile/smp-r8a7790.c     | 71 --------------------------------
 arch/arm/mach-shmobile/smp-r8a7791.c     | 53 ------------------------
 10 files changed, 2 insertions(+), 233 deletions(-)
 delete mode 100644 arch/arm/mach-shmobile/r8a7790.h
 delete mode 100644 arch/arm/mach-shmobile/r8a7791.h
 delete mode 100644 arch/arm/mach-shmobile/setup-r8a7790.c
 delete mode 100644 arch/arm/mach-shmobile/setup-r8a7791.c
 delete mode 100644 arch/arm/mach-shmobile/smp-r8a7790.c
 delete mode 100644 arch/arm/mach-shmobile/smp-r8a7791.c

-- 
2.7.4

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

[PATCH 1/5] ARM: shmobile: r8a7790: Remove legacy SMP fallback code

[Geert Uytterhoeven]

As of commit f5d70b9cee2282ec ("ARM: shmobile: r8a7790: Prioritize DT
APMU support") in v4.8, non-DT enablement of SMP was left as a fallback
for backwards compatibility with old DTBs.

The time has come to drop backwards compatibility, hence remove the
fallback code.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 arch/arm/mach-shmobile/Makefile        |  1 -
 arch/arm/mach-shmobile/r8a7790.h       |  7 ----
 arch/arm/mach-shmobile/setup-r8a7790.c |  2 -
 arch/arm/mach-shmobile/smp-r8a7790.c   | 71 ----------------------------------
 4 files changed, 81 deletions(-)
 delete mode 100644 arch/arm/mach-shmobile/r8a7790.h
 delete mode 100644 arch/arm/mach-shmobile/smp-r8a7790.c

diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index 1939f521579c6357..9133949b5df2c824 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -32,7 +32,6 @@ obj-$(CONFIG_ARCH_R8A7793)	+= regulator-quirk-rcar-gen2.o
 smp-y				:= $(cpu-y)
 smp-$(CONFIG_ARCH_SH73A0)	+= smp-sh73a0.o headsmp-scu.o platsmp-scu.o
 smp-$(CONFIG_ARCH_R8A7779)	+= smp-r8a7779.o headsmp-scu.o platsmp-scu.o
-smp-$(CONFIG_ARCH_R8A7790)	+= smp-r8a7790.o
 smp-$(CONFIG_ARCH_R8A7791)	+= smp-r8a7791.o
 smp-$(CONFIG_ARCH_EMEV2)	+= smp-emev2.o headsmp-scu.o platsmp-scu.o
 
diff --git a/arch/arm/mach-shmobile/r8a7790.h b/arch/arm/mach-shmobile/r8a7790.h
deleted file mode 100644
index 669c8cd09e076e9b..0000000000000000
--- a/arch/arm/mach-shmobile/r8a7790.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_R8A7790_H__
-#define __ASM_R8A7790_H__
-
-extern const struct smp_operations r8a7790_smp_ops;
-
-#endif /* __ASM_R8A7790_H__ */
diff --git a/arch/arm/mach-shmobile/setup-r8a7790.c b/arch/arm/mach-shmobile/setup-r8a7790.c
index 78d3e859bd64ad7d..fd2435b39529438e 100644
--- a/arch/arm/mach-shmobile/setup-r8a7790.c
+++ b/arch/arm/mach-shmobile/setup-r8a7790.c
@@ -19,7 +19,6 @@
 #include <asm/mach/arch.h>
 
 #include "common.h"
-#include "r8a7790.h"
 #include "rcar-gen2.h"
 
 static const char * const r8a7790_boards_compat_dt[] __initconst = {
@@ -29,7 +28,6 @@ static const char * const r8a7790_boards_compat_dt[] __initconst = {
 
 DT_MACHINE_START(R8A7790_DT, "Generic R8A7790 (Flattened Device Tree)")
 	.smp_init	= smp_init_ops(shmobile_smp_init_fallback_ops),
-	.smp		= smp_ops(r8a7790_smp_ops),
 	.init_early	= shmobile_init_delay,
 	.init_time	= rcar_gen2_timer_init,
 	.init_late	= shmobile_init_late,
diff --git a/arch/arm/mach-shmobile/smp-r8a7790.c b/arch/arm/mach-shmobile/smp-r8a7790.c
deleted file mode 100644
index 28f26d5362d8d4d2..0000000000000000
--- a/arch/arm/mach-shmobile/smp-r8a7790.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * SMP support for r8a7790
- *
- * Copyright (C) 2012-2013 Renesas Solutions Corp.
- * Copyright (C) 2012 Takashi Yoshii <takashi.yoshii.ze@renesas.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/io.h>
-#include <linux/soc/renesas/rcar-sysc.h>
-
-#include <asm/smp_plat.h>
-
-#include "common.h"
-#include "platsmp-apmu.h"
-#include "rcar-gen2.h"
-#include "r8a7790.h"
-
-static const struct rcar_sysc_ch r8a7790_ca15_scu = {
-	.chan_offs = 0x180, /* PWRSR5 .. PWRER5 */
-	.isr_bit = 12, /* CA15-SCU */
-};
-
-static const struct rcar_sysc_ch r8a7790_ca7_scu = {
-	.chan_offs = 0x100, /* PWRSR3 .. PWRER3 */
-	.isr_bit = 21, /* CA7-SCU */
-};
-
-static struct rcar_apmu_config r8a7790_apmu_config[] = {
-	{
-		.iomem = DEFINE_RES_MEM(0xe6152000, 0x188),
-		.cpus = { 0, 1, 2, 3 },
-	},
-	{
-		.iomem = DEFINE_RES_MEM(0xe6151000, 0x188),
-		.cpus = { 0x100, 0x0101, 0x102, 0x103 },
-	}
-};
-
-static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus)
-{
-	/* let APMU code install data related to shmobile_boot_vector */
-	shmobile_smp_apmu_prepare_cpus(max_cpus,
-				       r8a7790_apmu_config,
-				       ARRAY_SIZE(r8a7790_apmu_config));
-
-	/* turn on power to SCU */
-	rcar_gen2_pm_init();
-	rcar_sysc_power_up(&r8a7790_ca15_scu);
-	rcar_sysc_power_up(&r8a7790_ca7_scu);
-}
-
-const struct smp_operations r8a7790_smp_ops __initconst = {
-	.smp_prepare_cpus	= r8a7790_smp_prepare_cpus,
-	.smp_boot_secondary	= shmobile_smp_apmu_boot_secondary,
-#ifdef CONFIG_HOTPLUG_CPU
-	.cpu_can_disable	= shmobile_smp_cpu_can_disable,
-	.cpu_die		= shmobile_smp_apmu_cpu_die,
-	.cpu_kill		= shmobile_smp_apmu_cpu_kill,
-#endif
-};
-- 
2.7.4

[PATCH 2/5] ARM: shmobile: r8a7790: Use common R-Car Gen2 machine definition

[Geert Uytterhoeven]

Now r8a7790 no longer needs the SMP initialization fallback, it can use
the common R-Car Gen2 machine definition, and the r8a7790-specific one
can be removed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 arch/arm/mach-shmobile/Makefile          |  1 -
 arch/arm/mach-shmobile/setup-r8a7790.c   | 36 --------------------------------
 arch/arm/mach-shmobile/setup-rcar-gen2.c |  3 ++-
 3 files changed, 2 insertions(+), 38 deletions(-)
 delete mode 100644 arch/arm/mach-shmobile/setup-r8a7790.c

diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index 9133949b5df2c824..13aca853a162ed5d 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -12,7 +12,6 @@ obj-$(CONFIG_ARCH_R8A73A4)	+= setup-r8a73a4.o
 obj-$(CONFIG_ARCH_R8A7740)	+= setup-r8a7740.o
 obj-$(CONFIG_ARCH_R8A7778)	+= setup-r8a7778.o
 obj-$(CONFIG_ARCH_R8A7779)	+= setup-r8a7779.o pm-r8a7779.o
-obj-$(CONFIG_ARCH_R8A7790)	+= setup-r8a7790.o
 obj-$(CONFIG_ARCH_R8A7791)	+= setup-r8a7791.o
 obj-$(CONFIG_ARCH_EMEV2)	+= setup-emev2.o
 obj-$(CONFIG_ARCH_R7S72100)	+= setup-r7s72100.o
diff --git a/arch/arm/mach-shmobile/setup-r8a7790.c b/arch/arm/mach-shmobile/setup-r8a7790.c
deleted file mode 100644
index fd2435b39529438e..0000000000000000
--- a/arch/arm/mach-shmobile/setup-r8a7790.c
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * r8a7790 processor support
- *
- * Copyright (C) 2013  Renesas Solutions Corp.
- * Copyright (C) 2013  Magnus Damm
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/init.h>
-
-#include <asm/mach/arch.h>
-
-#include "common.h"
-#include "rcar-gen2.h"
-
-static const char * const r8a7790_boards_compat_dt[] __initconst = {
-	"renesas,r8a7790",
-	NULL,
-};
-
-DT_MACHINE_START(R8A7790_DT, "Generic R8A7790 (Flattened Device Tree)")
-	.smp_init	= smp_init_ops(shmobile_smp_init_fallback_ops),
-	.init_early	= shmobile_init_delay,
-	.init_time	= rcar_gen2_timer_init,
-	.init_late	= shmobile_init_late,
-	.reserve	= rcar_gen2_reserve,
-	.dt_compat	= r8a7790_boards_compat_dt,
-MACHINE_END
diff --git a/arch/arm/mach-shmobile/setup-rcar-gen2.c b/arch/arm/mach-shmobile/setup-rcar-gen2.c
index 80de6be912e132f7..a9860f71ba11fba4 100644
--- a/arch/arm/mach-shmobile/setup-rcar-gen2.c
+++ b/arch/arm/mach-shmobile/setup-rcar-gen2.c
@@ -185,8 +185,9 @@ void __init rcar_gen2_reserve(void)
 }
 
 static const char * const rcar_gen2_boards_compat_dt[] __initconst = {
+	"renesas,r8a7790",
 	/*
-	 * R8A7790 and R8A7791 can't be handled here as long as they need SMP
+	 * R8A7791 can't be handled here as long as it needs SMP
 	 * initialization fallback.
 	 */
 	"renesas,r8a7792",
-- 
2.7.4

[PATCH 3/5] ARM: shmobile: r8a7791: Remove legacy SMP fallback code

[Geert Uytterhoeven]

As of commit f89a51700d7ae0ef ("ARM: shmobile: r8a7791: Prioritize DT
APMU support") in v4.8, non-DT enablement of SMP was left as a fallback
for backwards compatibility with old DTBs.

The time has come to drop backwards compatibility, hence remove the
fallback code.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 arch/arm/mach-shmobile/Makefile        |  1 -
 arch/arm/mach-shmobile/r8a7791.h       |  7 -----
 arch/arm/mach-shmobile/setup-r8a7791.c |  2 --
 arch/arm/mach-shmobile/smp-r8a7791.c   | 53 ----------------------------------
 4 files changed, 63 deletions(-)
 delete mode 100644 arch/arm/mach-shmobile/r8a7791.h
 delete mode 100644 arch/arm/mach-shmobile/smp-r8a7791.c

diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index 13aca853a162ed5d..38086d0d2f5484a1 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -31,7 +31,6 @@ obj-$(CONFIG_ARCH_R8A7793)	+= regulator-quirk-rcar-gen2.o
 smp-y				:= $(cpu-y)
 smp-$(CONFIG_ARCH_SH73A0)	+= smp-sh73a0.o headsmp-scu.o platsmp-scu.o
 smp-$(CONFIG_ARCH_R8A7779)	+= smp-r8a7779.o headsmp-scu.o platsmp-scu.o
-smp-$(CONFIG_ARCH_R8A7791)	+= smp-r8a7791.o
 smp-$(CONFIG_ARCH_EMEV2)	+= smp-emev2.o headsmp-scu.o platsmp-scu.o
 
 # PM objects
diff --git a/arch/arm/mach-shmobile/r8a7791.h b/arch/arm/mach-shmobile/r8a7791.h
deleted file mode 100644
index 8c794aace938a766..0000000000000000
--- a/arch/arm/mach-shmobile/r8a7791.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_R8A7791_H__
-#define __ASM_R8A7791_H__
-
-extern const struct smp_operations r8a7791_smp_ops;
-
-#endif /* __ASM_R8A7791_H__ */
diff --git a/arch/arm/mach-shmobile/setup-r8a7791.c b/arch/arm/mach-shmobile/setup-r8a7791.c
index 26e2d181a1904da2..2de32fde1af7caae 100644
--- a/arch/arm/mach-shmobile/setup-r8a7791.c
+++ b/arch/arm/mach-shmobile/setup-r8a7791.c
@@ -20,7 +20,6 @@
 #include <asm/mach/arch.h>
 
 #include "common.h"
-#include "r8a7791.h"
 #include "rcar-gen2.h"
 
 static const char *const r8a7791_boards_compat_dt[] __initconst = {
@@ -30,7 +29,6 @@ static const char *const r8a7791_boards_compat_dt[] __initconst = {
 
 DT_MACHINE_START(R8A7791_DT, "Generic R8A7791 (Flattened Device Tree)")
 	.smp_init	= smp_init_ops(shmobile_smp_init_fallback_ops),
-	.smp		= smp_ops(r8a7791_smp_ops),
 	.init_early	= shmobile_init_delay,
 	.init_time	= rcar_gen2_timer_init,
 	.init_late	= shmobile_init_late,
diff --git a/arch/arm/mach-shmobile/smp-r8a7791.c b/arch/arm/mach-shmobile/smp-r8a7791.c
deleted file mode 100644
index 2948c22cfc53026c..0000000000000000
--- a/arch/arm/mach-shmobile/smp-r8a7791.c
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * SMP support for r8a7791
- *
- * Copyright (C) 2013 Renesas Solutions Corp.
- * Copyright (C) 2013 Magnus Damm
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/io.h>
-
-#include <asm/smp_plat.h>
-
-#include "common.h"
-#include "platsmp-apmu.h"
-#include "r8a7791.h"
-#include "rcar-gen2.h"
-
-static struct rcar_apmu_config r8a7791_apmu_config[] = {
-	{
-		.iomem = DEFINE_RES_MEM(0xe6152000, 0x188),
-		.cpus = { 0, 1 },
-	}
-};
-
-static void __init r8a7791_smp_prepare_cpus(unsigned int max_cpus)
-{
-	/* let APMU code install data related to shmobile_boot_vector */
-	shmobile_smp_apmu_prepare_cpus(max_cpus,
-				       r8a7791_apmu_config,
-				       ARRAY_SIZE(r8a7791_apmu_config));
-
-	rcar_gen2_pm_init();
-}
-
-const struct smp_operations r8a7791_smp_ops __initconst = {
-	.smp_prepare_cpus	= r8a7791_smp_prepare_cpus,
-	.smp_boot_secondary	= shmobile_smp_apmu_boot_secondary,
-#ifdef CONFIG_HOTPLUG_CPU
-	.cpu_can_disable	= shmobile_smp_cpu_can_disable,
-	.cpu_die		= shmobile_smp_apmu_cpu_die,
-	.cpu_kill		= shmobile_smp_apmu_cpu_kill,
-#endif
-};
-- 
2.7.4

[PATCH 4/5] ARM: shmobile: r8a7791: Use common R-Car Gen2 machine definition

[Geert Uytterhoeven]

Now r8a7791 no longer needs the SMP initialization fallback, it can use
the common R-Car Gen2 machine definition, and the r8a7791-specific one
can be removed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 arch/arm/mach-shmobile/Makefile          |  1 -
 arch/arm/mach-shmobile/setup-r8a7791.c   | 37 --------------------------------
 arch/arm/mach-shmobile/setup-rcar-gen2.c |  5 +----
 3 files changed, 1 insertion(+), 42 deletions(-)
 delete mode 100644 arch/arm/mach-shmobile/setup-r8a7791.c

diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index 38086d0d2f5484a1..2b8d3896e1ebbe6a 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -12,7 +12,6 @@ obj-$(CONFIG_ARCH_R8A73A4)	+= setup-r8a73a4.o
 obj-$(CONFIG_ARCH_R8A7740)	+= setup-r8a7740.o
 obj-$(CONFIG_ARCH_R8A7778)	+= setup-r8a7778.o
 obj-$(CONFIG_ARCH_R8A7779)	+= setup-r8a7779.o pm-r8a7779.o
-obj-$(CONFIG_ARCH_R8A7791)	+= setup-r8a7791.o
 obj-$(CONFIG_ARCH_EMEV2)	+= setup-emev2.o
 obj-$(CONFIG_ARCH_R7S72100)	+= setup-r7s72100.o
 
diff --git a/arch/arm/mach-shmobile/setup-r8a7791.c b/arch/arm/mach-shmobile/setup-r8a7791.c
deleted file mode 100644
index 2de32fde1af7caae..0000000000000000
--- a/arch/arm/mach-shmobile/setup-r8a7791.c
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * r8a7791 processor support
- *
- * Copyright (C) 2013  Renesas Electronics Corporation
- * Copyright (C) 2013  Renesas Solutions Corp.
- * Copyright (C) 2013  Magnus Damm
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/init.h>
-
-#include <asm/mach/arch.h>
-
-#include "common.h"
-#include "rcar-gen2.h"
-
-static const char *const r8a7791_boards_compat_dt[] __initconst = {
-	"renesas,r8a7791",
-	NULL,
-};
-
-DT_MACHINE_START(R8A7791_DT, "Generic R8A7791 (Flattened Device Tree)")
-	.smp_init	= smp_init_ops(shmobile_smp_init_fallback_ops),
-	.init_early	= shmobile_init_delay,
-	.init_time	= rcar_gen2_timer_init,
-	.init_late	= shmobile_init_late,
-	.reserve	= rcar_gen2_reserve,
-	.dt_compat	= r8a7791_boards_compat_dt,
-MACHINE_END
diff --git a/arch/arm/mach-shmobile/setup-rcar-gen2.c b/arch/arm/mach-shmobile/setup-rcar-gen2.c
index a9860f71ba11fba4..5ba1d215d741d92a 100644
--- a/arch/arm/mach-shmobile/setup-rcar-gen2.c
+++ b/arch/arm/mach-shmobile/setup-rcar-gen2.c
@@ -186,10 +186,7 @@ void __init rcar_gen2_reserve(void)
 
 static const char * const rcar_gen2_boards_compat_dt[] __initconst = {
 	"renesas,r8a7790",
-	/*
-	 * R8A7791 can't be handled here as long as it needs SMP
-	 * initialization fallback.
-	 */
+	"renesas,r8a7791",
 	"renesas,r8a7792",
 	"renesas,r8a7793",
 	"renesas,r8a7794",
-- 
2.7.4

[PATCH 5/5] ARM: shmobile: Remove unused shmobile_smp_init_fallback_ops()

[Geert Uytterhoeven]

shmobile_smp_init_fallback_ops() became unused after removing
SoC-specific machine definitions that provided legacy SMP initialization
fallbacks.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 arch/arm/mach-shmobile/common.h  | 1 -
 arch/arm/mach-shmobile/platsmp.c | 9 ---------
 2 files changed, 10 deletions(-)

diff --git a/arch/arm/mach-shmobile/common.h b/arch/arm/mach-shmobile/common.h
index 43c1ac6962741757..5d2b1473e11eb612 100644
--- a/arch/arm/mach-shmobile/common.h
+++ b/arch/arm/mach-shmobile/common.h
@@ -16,7 +16,6 @@ extern void shmobile_smp_sleep(void);
 extern void shmobile_smp_hook(unsigned int cpu, unsigned long fn,
 			      unsigned long arg);
 extern bool shmobile_smp_cpu_can_disable(unsigned int cpu);
-extern bool shmobile_smp_init_fallback_ops(void);
 extern void shmobile_boot_apmu(void);
 extern void shmobile_boot_scu(void);
 extern void shmobile_smp_scu_prepare_cpus(phys_addr_t scu_base_phys,
diff --git a/arch/arm/mach-shmobile/platsmp.c b/arch/arm/mach-shmobile/platsmp.c
index 02e21bceb0856bc5..b23378f3d7e1726b 100644
--- a/arch/arm/mach-shmobile/platsmp.c
+++ b/arch/arm/mach-shmobile/platsmp.c
@@ -36,12 +36,3 @@ bool shmobile_smp_cpu_can_disable(unsigned int cpu)
 	return true; /* Hotplug of any CPU is supported */
 }
 #endif
-
-bool __init shmobile_smp_init_fallback_ops(void)
-{
-	/* fallback on PSCI/smp_ops if no other DT based method is detected */
-	if (!IS_ENABLED(CONFIG_SMP))
-		return false;
-
-	return platform_can_secondary_boot() ? true : false;
-}
-- 
2.7.4

Re: [PATCH 0/5] ARM: shmobile: rcar-gen2: Remove legacy SMP fallback code

[Simon Horman]

On Fri, May 18, 2018 at 02:48:49PM +0200, Geert Uytterhoeven wrote:
> 	Hi Simon, Magnus,
> 
> R-Car H2 and M2-W have been supporting SMP enablement from DT using the
> "renesas,apmu" enable-method since v4.8.  A legacy fallback was left in
> place for backwards compatibility with old DTBs.
> 
> This patch series removes the legacy SMP fallbacks for R-Car H2 and
> M2-W, and consolidates their support in the common R-Car Gen2 machine
> definition.
> 
> For testing, this series is available in the
> topic/rcar2-legacy-smp-removal-v1 branch of my renesas-drivers git
> repository at
> git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git.
> 
> Thanks for applying!
> 
> Geert Uytterhoeven (5):
>   ARM: shmobile: r8a7790: Remove legacy SMP fallback code
>   ARM: shmobile: r8a7790: Use common R-Car Gen2 machine definition
>   ARM: shmobile: r8a7791: Remove legacy SMP fallback code
>   ARM: shmobile: r8a7791: Use common R-Car Gen2 machine definition
>   ARM: shmobile: Remove unused shmobile_smp_init_fallback_ops()

Thanks, applied for v4.19.