ARM: dma-mapping: move consistent_init into CONFIG_MMU section
No point wrapping the contents of this function with #ifdef CONFIG_MMU
when we can place it and the core_initcall() entirely within the
existing conditional block.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Ungerer <gerg@uclinux.org>
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 6b24e5e..19357f7 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -144,6 +144,44 @@
#error ARM Coherent DMA allocator does not (yet) support huge TLB
#endif
+/*
+ * Initialise the consistent memory allocation.
+ */
+static int __init consistent_init(void)
+{
+ int ret = 0;
+ pgd_t *pgd;
+ pmd_t *pmd;
+ pte_t *pte;
+ int i = 0;
+ u32 base = CONSISTENT_BASE;
+
+ do {
+ pgd = pgd_offset(&init_mm, base);
+ pmd = pmd_alloc(&init_mm, pgd, base);
+ if (!pmd) {
+ printk(KERN_ERR "%s: no pmd tables\n", __func__);
+ ret = -ENOMEM;
+ break;
+ }
+ WARN_ON(!pmd_none(*pmd));
+
+ pte = pte_alloc_kernel(pmd, base);
+ if (!pte) {
+ printk(KERN_ERR "%s: no pte tables\n", __func__);
+ ret = -ENOMEM;
+ break;
+ }
+
+ consistent_pte[i++] = pte;
+ base += (1 << PGDIR_SHIFT);
+ } while (base < CONSISTENT_END);
+
+ return ret;
+}
+
+core_initcall(consistent_init);
+
static void *
__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp,
pgprot_t prot)
@@ -400,46 +438,6 @@
EXPORT_SYMBOL(dma_free_coherent);
/*
- * Initialise the consistent memory allocation.
- */
-static int __init consistent_init(void)
-{
- int ret = 0;
-#ifdef CONFIG_MMU
- pgd_t *pgd;
- pmd_t *pmd;
- pte_t *pte;
- int i = 0;
- u32 base = CONSISTENT_BASE;
-
- do {
- pgd = pgd_offset(&init_mm, base);
- pmd = pmd_alloc(&init_mm, pgd, base);
- if (!pmd) {
- printk(KERN_ERR "%s: no pmd tables\n", __func__);
- ret = -ENOMEM;
- break;
- }
- WARN_ON(!pmd_none(*pmd));
-
- pte = pte_alloc_kernel(pmd, base);
- if (!pte) {
- printk(KERN_ERR "%s: no pte tables\n", __func__);
- ret = -ENOMEM;
- break;
- }
-
- consistent_pte[i++] = pte;
- base += (1 << PGDIR_SHIFT);
- } while (base < CONSISTENT_END);
-#endif /* !CONFIG_MMU */
-
- return ret;
-}
-
-core_initcall(consistent_init);
-
-/*
* Make an area consistent for devices.
* Note: Drivers should NOT use this function directly, as it will break
* platforms with CONFIG_DMABOUNCE.