linux-kernel - [PATCH v4 09/10] ARM: sunxi: smp: Move cpu

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Date:   Fri, 23 Feb 2018 14:37:41 +0100
From:   Mylène Josserand <mylene.josserand@...tlin.com>
To:     maxime.ripard@...tlin.com, linux@...linux.org.uk, wens@...e.org,
        robh+dt@...nel.org, mark.rutland@....com
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, clabbe.montjoie@...il.com,
        thomas.petazzoni@...tlin.com, mylene.josserand@...tlin.com,
        quentin.schulz@...tlin.com
Subject: [PATCH v4 09/10] ARM: sunxi: smp: Move cpu_resume assembly entry into file

Move the CPU resume assembly function into the assembly file
to remove all assembly code from C code.

Signed-off-by: Mylène Josserand <mylene.josserand@...tlin.com>
---
 arch/arm/mach-sunxi/headsmp.S |  5 +++++
 arch/arm/mach-sunxi/mc_smp.c  | 11 +----------
 2 files changed, 6 insertions(+), 10 deletions(-)

diff --git a/arch/arm/mach-sunxi/headsmp.S b/arch/arm/mach-sunxi/headsmp.S
index 4f5957a6e188..d5c97e945e69 100644
--- a/arch/arm/mach-sunxi/headsmp.S
+++ b/arch/arm/mach-sunxi/headsmp.S
@@ -70,4 +70,9 @@ ENTRY(sunxi_boot)
 	bl	sunxi_mc_smp_cluster_cache_enable
 	b	secondary_startup
 ENDPROC(sunxi_boot)
+
+ENTRY(sunxi_mc_smp_resume)
+	bl	sunxi_mc_smp_cluster_cache_enable
+	b	cpu_resume
+ENDPROC(sunxi_mc_smp_resume)
 #endif
diff --git a/arch/arm/mach-sunxi/mc_smp.c b/arch/arm/mach-sunxi/mc_smp.c
index 4e807cc11a0f..f1ad425a469c 100644
--- a/arch/arm/mach-sunxi/mc_smp.c
+++ b/arch/arm/mach-sunxi/mc_smp.c
@@ -84,6 +84,7 @@ static bool is_sun9i;
 
 extern void sunxi_boot(void);
 extern void sunxi_cluster_cache_enable(void);
+extern void sunxi_mc_smp_resume(void);
 
 static bool sunxi_core_is_cortex_a15(unsigned int core, unsigned int cluster)
 {
@@ -641,16 +642,6 @@ static bool __init sunxi_mc_smp_cpu_table_init(void)
  */
 typedef typeof(cpu_reset) phys_reset_t;
 
-static void __init __naked sunxi_mc_smp_resume(void)
-{
-	asm volatile(
-		"bl	sunxi_mc_smp_cluster_cache_enable\n"
-		"b	cpu_resume"
-		/* Let compiler know about sunxi_mc_smp_cluster_cache_enable */
-		:: "i" (sunxi_mc_smp_cluster_cache_enable)
-	);
-}
-
 static int __init nocache_trampoline(unsigned long __unused)
 {
 	phys_reset_t phys_reset;
-- 
2.11.0