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Subject[PATCH 2/7] ARM: EXYNOS: Annotate iomem and pm_data pointers __ro_after_init
Date
The pointers to __iomem sysram and exynos_pm_data are set only during
initcalls. Later the pointers itself are used only in read-only way so
we can mark them __ro_after_init to increase code safeness.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
arch/arm/mach-exynos/exynos.c | 4 ++--
arch/arm/mach-exynos/mcpm-exynos.c | 2 +-
arch/arm/mach-exynos/suspend.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index fa08ef99b4ad..a863f8ec0f7a 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -36,8 +36,8 @@ static struct platform_device exynos_cpuidle = {
.id = -1,
};

-void __iomem *sysram_base_addr;
-void __iomem *sysram_ns_base_addr;
+void __iomem *sysram_base_addr __ro_after_init;
+void __iomem *sysram_ns_base_addr __ro_after_init;

void __init exynos_sysram_init(void)
{
diff --git a/arch/arm/mach-exynos/mcpm-exynos.c b/arch/arm/mach-exynos/mcpm-exynos.c
index f086bf615b29..038fd8c993d0 100644
--- a/arch/arm/mach-exynos/mcpm-exynos.c
+++ b/arch/arm/mach-exynos/mcpm-exynos.c
@@ -32,7 +32,7 @@
#define EXYNOS5420_USE_ARM_CORE_DOWN_STATE BIT(29)
#define EXYNOS5420_USE_L2_COMMON_UP_STATE BIT(30)

-static void __iomem *ns_sram_base_addr;
+static void __iomem *ns_sram_base_addr __ro_after_init;

/*
* The common v7_exit_coherency_flush API could not be used because of the
diff --git a/arch/arm/mach-exynos/suspend.c b/arch/arm/mach-exynos/suspend.c
index d0e6ac7938f3..339fe011d658 100644
--- a/arch/arm/mach-exynos/suspend.c
+++ b/arch/arm/mach-exynos/suspend.c
@@ -64,7 +64,7 @@ struct exynos_pm_data {
int (*cpu_suspend)(unsigned long);
};

-static const struct exynos_pm_data *pm_data;
+static const struct exynos_pm_data *pm_data __ro_after_init;

static int exynos5420_cpu_state;
static unsigned int exynos_pmu_spare3;
--
2.7.4
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