1 files changed, 38 insertions, 0 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 5ca1cdba563a..26e4692f2d1a 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -354,6 +354,41 @@ extern int __must_check device_create_bin_file(struct device *dev,
                                                struct bin_attribute *attr);
 extern void device_remove_bin_file(struct device *dev,
                                    struct bin_attribute *attr);
+
+/* device resource management */
+typedef void (*dr_release_t)(struct device *dev, void *res);
+typedef int (*dr_match_t)(struct device *dev, void *res, void *match_data);
+
+#ifdef CONFIG_DEBUG_DEVRES
+extern void * __devres_alloc(dr_release_t release, size_t size, gfp_t gfp,
+                             const char *name);
+#define devres_alloc(release, size, gfp) \
+        __devres_alloc(release, size, gfp, #release)
+#else
+extern void * devres_alloc(dr_release_t release, size_t size, gfp_t gfp);
+#endif
+extern void devres_free(void *res);
+extern void devres_add(struct device *dev, void *res);
+extern void * devres_find(struct device *dev, dr_release_t release,
+                          dr_match_t match, void *match_data);
+extern void * devres_get(struct device *dev, void *new_res,
+                         dr_match_t match, void *match_data);
+extern void * devres_remove(struct device *dev, dr_release_t release,
+                            dr_match_t match, void *match_data);
+extern int devres_destroy(struct device *dev, dr_release_t release,
+                          dr_match_t match, void *match_data);
+
+/* devres group */
+extern void * __must_check devres_open_group(struct device *dev, void *id,
+                                             gfp_t gfp);
+extern void devres_close_group(struct device *dev, void *id);
+extern void devres_remove_group(struct device *dev, void *id);
+extern int devres_release_group(struct device *dev, void *id);
+
+/* managed kzalloc/kfree for device drivers, no kmalloc, always use kzalloc */
+extern void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp);
+extern void devm_kfree(struct device *dev, void *p);
+
 struct device {
         struct klist            klist_children;
         struct klist_node       knode_parent;           /* node in sibling list */
@@ -397,6 +432,9 @@ struct device {
         /* arch specific additions */
         struct dev_archdata     archdata;
 
+        spinlock_t              devres_lock;
+        struct list_head        devres_head;
+
         /* class_device migration path */
         struct list_head        node;
         struct class            *class;