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-rw-r--r--include/linux/memremap.h2
-rw-r--r--kernel/memremap.c8
2 files changed, 1 insertions, 9 deletions
diff --git a/include/linux/memremap.h b/include/linux/memremap.h
index bcaa634..9341619 100644
--- a/include/linux/memremap.h
+++ b/include/linux/memremap.h
@@ -26,7 +26,7 @@ struct vmem_altmap {
unsigned long vmem_altmap_offset(struct vmem_altmap *altmap);
void vmem_altmap_free(struct vmem_altmap *altmap, unsigned long nr_pfns);
-#if defined(CONFIG_SPARSEMEM_VMEMMAP) && defined(CONFIG_ZONE_DEVICE)
+#ifdef CONFIG_ZONE_DEVICE
struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start);
#else
static inline struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start)
diff --git a/kernel/memremap.c b/kernel/memremap.c
index 0175321..ddb3247 100644
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -308,12 +308,6 @@ void *devm_memremap_pages(struct device *dev, struct resource *res,
if (is_ram == REGION_INTERSECTS)
return __va(res->start);
- if (altmap && !IS_ENABLED(CONFIG_SPARSEMEM_VMEMMAP)) {
- dev_err(dev, "%s: altmap requires CONFIG_SPARSEMEM_VMEMMAP=y\n",
- __func__);
- return ERR_PTR(-ENXIO);
- }
-
if (!ref)
return ERR_PTR(-EINVAL);
@@ -401,7 +395,6 @@ void vmem_altmap_free(struct vmem_altmap *altmap, unsigned long nr_pfns)
altmap->alloc -= nr_pfns;
}
-#ifdef CONFIG_SPARSEMEM_VMEMMAP
struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start)
{
/*
@@ -427,5 +420,4 @@ struct vmem_altmap *to_vmem_altmap(unsigned long memmap_start)
return pgmap ? pgmap->altmap : NULL;
}
-#endif /* CONFIG_SPARSEMEM_VMEMMAP */
#endif /* CONFIG_ZONE_DEVICE */
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