device property: Constify device_get_match_data()

Constify device_get_match_data() as OF and ACPI variants return
constant value.

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index e6285b5..0dad0bd 100644 (file)
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -830,7 +830,7 @@ const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
 }
 EXPORT_SYMBOL_GPL(acpi_match_device);
 
-void *acpi_device_get_match_data(const struct device *dev)
+const void *acpi_device_get_match_data(const struct device *dev)
 {
        const struct acpi_device_id *match;
 
@@ -838,7 +838,7 @@ void *acpi_device_get_match_data(const struct device *dev)
        if (!match)
                return NULL;
 
-       return (void *)match->driver_data;
+       return (const void *)match->driver_data;
 }
 EXPORT_SYMBOL_GPL(acpi_device_get_match_data);
 

diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index f9b5fa2..5815356 100644 (file)
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -1271,7 +1271,7 @@ static int acpi_fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
        return 0;
 }
 
-static void *
+static const void *
 acpi_fwnode_device_get_match_data(const struct fwnode_handle *fwnode,
                                  const struct device *dev)
 {

diff --git a/drivers/base/property.c b/drivers/base/property.c
index 3022362..8f205f6 100644 (file)
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -1410,9 +1410,8 @@ int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
 }
 EXPORT_SYMBOL(fwnode_graph_parse_endpoint);
 
-void *device_get_match_data(struct device *dev)
+const void *device_get_match_data(struct device *dev)
 {
-       return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data,
-                                 dev);
+       return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data, dev);
 }
 EXPORT_SYMBOL_GPL(device_get_match_data);

diff --git a/drivers/of/property.c b/drivers/of/property.c
index 36ed84e..f46828e 100644 (file)
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -977,11 +977,11 @@ static int of_fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
        return 0;
 }
 
-static void *
+static const void *
 of_fwnode_device_get_match_data(const struct fwnode_handle *fwnode,
                                const struct device *dev)
 {
-       return (void *)of_device_get_match_data(dev);
+       return of_device_get_match_data(dev);
 }
 
 const struct fwnode_operations of_fwnode_ops = {

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index bdf47e0..968173e 100644 (file)
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -587,7 +587,7 @@ extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
 const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
                                               const struct device *dev);
 
-void *acpi_device_get_match_data(const struct device *dev);
+const void *acpi_device_get_match_data(const struct device *dev);
 extern bool acpi_driver_match_device(struct device *dev,
                                     const struct device_driver *drv);
 int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *);
@@ -766,7 +766,7 @@ static inline const struct acpi_device_id *acpi_match_device(
        return NULL;
 }
 
-static inline void *acpi_device_get_match_data(const struct device *dev)
+static inline const void *acpi_device_get_match_data(const struct device *dev)
 {
        return NULL;
 }

diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
index 4fa1a48..4fe8f28 100644 (file)
--- a/include/linux/fwnode.h
+++ b/include/linux/fwnode.h
@@ -73,8 +73,8 @@ struct fwnode_operations {
        struct fwnode_handle *(*get)(struct fwnode_handle *fwnode);
        void (*put)(struct fwnode_handle *fwnode);
        bool (*device_is_available)(const struct fwnode_handle *fwnode);
-       void *(*device_get_match_data)(const struct fwnode_handle *fwnode,
-                                      const struct device *dev);
+       const void *(*device_get_match_data)(const struct fwnode_handle *fwnode,
+                                            const struct device *dev);
        bool (*property_present)(const struct fwnode_handle *fwnode,
                                 const char *propname);
        int (*property_read_int_array)(const struct fwnode_handle *fwnode,

diff --git a/include/linux/property.h b/include/linux/property.h
index 769d372..2eea4b3 100644 (file)
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -283,7 +283,7 @@ bool device_dma_supported(struct device *dev);
 
 enum dev_dma_attr device_get_dma_attr(struct device *dev);
 
-void *device_get_match_data(struct device *dev);
+const void *device_get_match_data(struct device *dev);
 
 int device_get_phy_mode(struct device *dev);