From: Rob Herring <robh@kernel.org>
Date: Mon, 28 Oct 2019 11:32:32 -0500
Subject: resource: Add a resource_list_first_type helper
Git-commit: 494f8b10d832456a96be4ee7317425f6936cabc8
Patch-mainline: v5.5-rc1
References: jsc#SLE-7772
A common pattern is looping over a resource_list just to get a matching
entry with a specific type. Add resource_list_first_type() helper which
implements this.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
include/linux/resource_ext.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/linux/resource_ext.h b/include/linux/resource_ext.h
index 06da59b23b79..ff0339df56af 100644
--- a/include/linux/resource_ext.h
+++ b/include/linux/resource_ext.h
@@ -66,4 +66,16 @@ resource_list_destroy_entry(struct resource_entry *entry)
#define resource_list_for_each_entry_safe(entry, tmp, list) \
list_for_each_entry_safe((entry), (tmp), (list), node)
+static inline struct resource_entry *
+resource_list_first_type(struct list_head *list, unsigned long type)
+{
+ struct resource_entry *entry;
+
+ resource_list_for_each_entry(entry, list) {
+ if (resource_type(entry->res) == type)
+ return entry;
+ }
+ return NULL;
+}
+
#endif /* _LINUX_RESOURCE_EXT_H */