4 files changed, 11 insertions, 11 deletions
diff --git a/src/superio/common/generic.c b/src/superio/common/generic.c
index 88432ff68d..cffe0c3476 100644
--- a/src/superio/common/generic.c
+++ b/src/superio/common/generic.c
@@ -31,7 +31,7 @@ static void generic_read_resources(struct device *dev)
 }
 
 #if CONFIG(HAVE_ACPI_TABLES)
-static void generic_ssdt(struct device *dev)
+static void generic_ssdt(const struct device *dev)
 {
 	const char *scope = acpi_device_scope(dev);
 	const char *name = acpi_device_name(dev);
diff --git a/src/superio/common/ssdt.c b/src/superio/common/ssdt.c
index f5ad765aa1..9ff02fb3af 100644
--- a/src/superio/common/ssdt.c
+++ b/src/superio/common/ssdt.c
@@ -29,7 +29,7 @@ static const struct superio_dev superio_devs[] = {
 static const u8 io_idx[] = {PNP_IDX_IO0, PNP_IDX_IO1, PNP_IDX_IO2, PNP_IDX_IO3};
 static const u8 irq_idx[] = {PNP_IDX_IRQ0, PNP_IDX_IRQ1};
 
-static const struct superio_dev *superio_guess_function(struct device *dev)
+static const struct superio_dev *superio_guess_function(const struct device *dev)
 {
 	for (size_t i = 0; i < ARRAY_SIZE(io_idx); i++) {
 		struct resource *res = probe_resource(dev, io_idx[i]);
@@ -62,7 +62,7 @@ static const struct superio_dev *superio_guess_function(struct device *dev)
 }
 
 /* Return true if there are resources to report */
-static bool has_resources(struct device *dev)
+static bool has_resources(const struct device *dev)
 {
 	for (size_t i = 0; i < ARRAY_SIZE(io_idx); i++) {
 		struct resource *res = probe_resource(dev, io_idx[i]);
@@ -80,7 +80,7 @@ static bool has_resources(struct device *dev)
 }
 
 /* Add IO and IRQ resources for _CRS or _PRS */
-static void ldn_gen_resources(struct device *dev)
+static void ldn_gen_resources(const struct device *dev)
 {
 	uint16_t irq = 0;
 	for (size_t i = 0; i < ARRAY_SIZE(io_idx); i++) {
@@ -109,7 +109,7 @@ static void ldn_gen_resources(struct device *dev)
 }
 
 /* Add resource base and size for additional SuperIO code */
-static void ldn_gen_resources_use(struct device *dev)
+static void ldn_gen_resources_use(const struct device *dev)
 {
 	char name[5];
 	for (size_t i = 0; i < ARRAY_SIZE(io_idx); i++) {
@@ -161,7 +161,7 @@ static const char *name_from_hid(const char *hid)
 	return "Generic device";
 }
 
-void superio_common_fill_ssdt_generator(struct device *dev)
+void superio_common_fill_ssdt_generator(const struct device *dev)
 {
 	if (!dev || !dev->bus || !dev->bus->dev) {
 		printk(BIOS_CRIT, "BUG: Invalid argument in %s!\n", __func__);
diff --git a/src/superio/common/ssdt.h b/src/superio/common/ssdt.h
index 1f9918950f..5b1efcf8ac 100644
--- a/src/superio/common/ssdt.h
+++ b/src/superio/common/ssdt.h
@@ -7,6 +7,6 @@
 #include <device/device.h>
 
 const char *superio_common_ldn_acpi_name(const struct device *dev);
-void superio_common_fill_ssdt_generator(struct device *dev);
+void superio_common_fill_ssdt_generator(const struct device *dev);
 
 #endif /* __SUPERIO_COMMON_SSDT_H__ */
diff --git a/src/superio/nuvoton/npcd378/superio.c b/src/superio/nuvoton/npcd378/superio.c
index 94b42a02cf..8f5975ba26 100644
--- a/src/superio/nuvoton/npcd378/superio.c
+++ b/src/superio/nuvoton/npcd378/superio.c
@@ -115,7 +115,7 @@ static const char *npcd378_acpi_hid(const struct device *dev)
 	}
 }
 
-static void npcd378_ssdt_aux(struct device *dev)
+static void npcd378_ssdt_aux(const struct device *dev)
 {
 	/* Scope */
 	acpigen_write_scope(acpi_device_path(dev));
@@ -131,7 +131,7 @@ static void npcd378_ssdt_aux(struct device *dev)
 	acpigen_pop_len();		/* Pop Scope */
 }
 
-static void npcd378_ssdt_kbc(struct device *dev)
+static void npcd378_ssdt_kbc(const struct device *dev)
 {
 	/* Scope */
 	acpigen_write_scope(acpi_device_path(dev));
@@ -147,7 +147,7 @@ static void npcd378_ssdt_kbc(struct device *dev)
 	acpigen_pop_len();		/* Pop Scope */
 }
 
-static void npcd378_ssdt_pwr(struct device *dev)
+static void npcd378_ssdt_pwr(const struct device *dev)
 {
 	const char *name = acpi_device_path(dev);
 	const char *scope = acpi_device_scope(dev);
@@ -403,7 +403,7 @@ static void npcd378_ssdt_pwr(struct device *dev)
 	acpigen_pop_len();		/* Scope */
 }
 
-static void npcd378_fill_ssdt_generator(struct device *dev)
+static void npcd378_fill_ssdt_generator(const struct device *dev)
 {
 	superio_common_fill_ssdt_generator(dev);