diff --git a/arch/openrisc/include/asm/io.h b/arch/openrisc/include/asm/io.h
index 7d6b4a77b379d8e2f14aeb862128e481e8b20850..c298061c70a7ee2ed6b1a71db0d5399164e45a11 100644
--- a/arch/openrisc/include/asm/io.h
+++ b/arch/openrisc/include/asm/io.h
@@ -31,7 +31,7 @@
 void __iomem *ioremap(phys_addr_t offset, unsigned long size);
 
 #define iounmap iounmap
-extern void iounmap(void *addr);
+extern void iounmap(void __iomem *addr);
 
 #include <asm-generic/io.h>
 
diff --git a/arch/openrisc/mm/ioremap.c b/arch/openrisc/mm/ioremap.c
index 5aed97a18bac934dd7e0abfb1e9b5d44c99dcfec..daae13a76743be694d295c570419dcf31dc2c7fb 100644
--- a/arch/openrisc/mm/ioremap.c
+++ b/arch/openrisc/mm/ioremap.c
@@ -77,7 +77,7 @@ void __iomem *__ref ioremap(phys_addr_t addr, unsigned long size)
 }
 EXPORT_SYMBOL(ioremap);
 
-void iounmap(void *addr)
+void iounmap(void __iomem *addr)
 {
 	/* If the page is from the fixmap pool then we just clear out
 	 * the fixmap mapping.
diff --git a/drivers/soc/litex/litex_soc_ctrl.c b/drivers/soc/litex/litex_soc_ctrl.c
index 1217cafdfd4d1d2b691bc6d487dcce5d63755d3e..9b076638457087a01ea168dd67eb8f3981d58e9b 100644
--- a/drivers/soc/litex/litex_soc_ctrl.c
+++ b/drivers/soc/litex/litex_soc_ctrl.c
@@ -140,12 +140,13 @@ struct litex_soc_ctrl_device {
 	void __iomem *base;
 };
 
+#ifdef CONFIG_OF
 static const struct of_device_id litex_soc_ctrl_of_match[] = {
 	{.compatible = "litex,soc-controller"},
 	{},
 };
-
 MODULE_DEVICE_TABLE(of, litex_soc_ctrl_of_match);
+#endif /* CONFIG_OF */
 
 static int litex_soc_ctrl_probe(struct platform_device *pdev)
 {