arm64: dma-mapping: Mark atomic_pool as __ro_after_init

[sfrench/cifs-2.6.git] / arch / arm64 / mm / dma-mapping.c

diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index f27d4dd043848dc8775a52588cffa7e27bd006a6..614af886b7ef4f7348470f8746ea822e8665401a 100644 (file)
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -42,7 +42,7 @@ static pgprot_t __get_dma_pgprot(unsigned long attrs, pgprot_t prot,
        return prot;
 }
 
-static struct gen_pool *atomic_pool;
+static struct gen_pool *atomic_pool __ro_after_init;
 
 #define DEFAULT_DMA_COHERENT_POOL_SIZE  SZ_256K
 static size_t atomic_pool_size __initdata = DEFAULT_DMA_COHERENT_POOL_SIZE;
@@ -425,7 +425,7 @@ static int __init atomic_pool_init(void)
 
                gen_pool_set_algo(atomic_pool,
                                  gen_pool_first_fit_order_align,
-                                 (void *)PAGE_SHIFT);
+                                 NULL);
 
                pr_info("DMA: preallocated %zu KiB pool for atomic allocations\n",
                        atomic_pool_size / 1024);