From: Vladimir Murzin <vladimir.murzin@arm.com>
Date: Mon, 25 Sep 2017 09:29:07 +0000 (+0100)
Subject: ARM: 8698/1: dma-mapping: Mark atomic_pool as __ro_after_init
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=b337e1c40d3ea2d6f09228c4ff203f006abc9095;p=openwrt%2Fstaging%2Fblogic.git

ARM: 8698/1: dma-mapping: Mark atomic_pool as __ro_after_init

atomic_pool is setup once while init stage and never changed after
that, so it is good candidate for __ro_after_init.

Since we are here mark atomic_pool_size with __init_data.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 785606e3783e..24519f4508b9 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -382,9 +382,9 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
 }
 
 #define DEFAULT_DMA_COHERENT_POOL_SIZE	SZ_256K
-static struct gen_pool *atomic_pool;
+static struct gen_pool *atomic_pool __ro_after_init;
 
-static size_t atomic_pool_size = DEFAULT_DMA_COHERENT_POOL_SIZE;
+static size_t atomic_pool_size __initdata = DEFAULT_DMA_COHERENT_POOL_SIZE;
 
 static int __init early_coherent_pool(char *p)
 {