mm/cma.c: fix typos in comments

Signed-off-by: Shailendra Verma <shailendra.capricorn@gmail.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/cma.c

@@ -182,7 +182,7 @@ int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
 	if (!size || !memblock_is_region_reserved(base, size))
 		return -EINVAL;
 
-	/* ensure minimal alignment requied by mm core */
+	/* ensure minimal alignment required by mm core */
 	alignment = PAGE_SIZE << max(MAX_ORDER - 1, pageblock_order);
 
 	/* alignment should be aligned with order_per_bit */
@@ -238,7 +238,7 @@ int __init cma_declare_contiguous(phys_addr_t base,
 	/*
 	 * high_memory isn't direct mapped memory so retrieving its physical
 	 * address isn't appropriate.  But it would be useful to check the
-	 * physical address of the highmem boundary so it's justfiable to get
+	 * physical address of the highmem boundary so it's justifiable to get
 	 * the physical address from it.  On x86 there is a validation check for
 	 * this case, so the following workaround is needed to avoid it.
 	 */