diff --git a/sys/compat/linuxkpi/common/include/linux/io.h b/sys/compat/linuxkpi/common/include/linux/io.h
index 5eb58719fe07..a5891947a60e 100644
--- a/sys/compat/linuxkpi/common/include/linux/io.h
+++ b/sys/compat/linuxkpi/common/include/linux/io.h
@@ -180,8 +180,7 @@ _outb(u_char data, u_int port)
 }
 #endif
 
-#if defined(__i386__) || defined(__amd64__) || \
-    defined(__arm__) || defined(__mips__) || defined(__powerpc__)
+#if defined(__i386__) || defined(__amd64__) || defined(__powerpc__)
 void *_ioremap_attr(vm_paddr_t phys_addr, unsigned long size, int attr);
 #else
 #define	_ioremap_attr(...) NULL
diff --git a/sys/compat/linuxkpi/common/src/linux_compat.c b/sys/compat/linuxkpi/common/src/linux_compat.c
index b47bec540e07..8df5de6329b6 100644
--- a/sys/compat/linuxkpi/common/src/linux_compat.c
+++ b/sys/compat/linuxkpi/common/src/linux_compat.c
@@ -1415,8 +1415,7 @@ vmmap_remove(void *addr)
 	return (vmmap);
 }
 
-#if defined(__i386__) || defined(__amd64__) || \
-    defined(__arm__) || defined(__mips__) || defined(__powerpc__)
+#if defined(__i386__) || defined(__amd64__) || defined(__powerpc__)
 void *
 _ioremap_attr(vm_paddr_t phys_addr, unsigned long size, int attr)
 {
@@ -1439,8 +1438,7 @@ iounmap(void *addr)
 	vmmap = vmmap_remove(addr);
 	if (vmmap == NULL)
 		return;
-#if defined(__i386__) || defined(__amd64__) || \
-    defined(__arm__) || defined(__mips__) || defined(__powerpc__)
+#if defined(__i386__) || defined(__amd64__) || defined(__powerpc__)
 	pmap_unmapdev((vm_offset_t)addr, vmmap->vm_size);
 #endif
 	kfree(vmmap);