--- zzzz-none-000/linux-3.10.107/arch/mn10300/include/asm/highmem.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/mn10300/include/asm/highmem.h	2021-02-04 17:41:59.000000000 +0000
@@ -70,11 +70,12 @@
  * be used in IRQ contexts, so in some (very limited) cases we need
  * it.
  */
-static inline unsigned long kmap_atomic(struct page *page)
+static inline void *kmap_atomic(struct page *page)
 {
 	unsigned long vaddr;
 	int idx, type;
 
+	preempt_disable();
 	pagefault_disable();
 	if (page < highmem_start_page)
 		return page_address(page);
@@ -89,7 +90,7 @@
 	set_pte(kmap_pte - idx, mk_pte(page, kmap_prot));
 	local_flush_tlb_one(vaddr);
 
-	return vaddr;
+	return (void *)vaddr;
 }
 
 static inline void __kunmap_atomic(unsigned long vaddr)
@@ -98,6 +99,7 @@
 
 	if (vaddr < FIXADDR_START) { /* FIXME */
 		pagefault_enable();
+		preempt_enable();
 		return;
 	}
 
@@ -122,6 +124,7 @@
 
 	kmap_atomic_idx_pop();
 	pagefault_enable();
+	preempt_enable();
 }
 #endif /* __KERNEL__ */