From: Rob Herring <robh@kernel.org>
Date: Mon, 28 Oct 2019 16:32:32 +0000 (-0500)
Subject: resource: Add a resource_list_first_type helper
X-Git-Tag: accepted/tizen/unified/20200709.164653~772
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=233fd9ce8cef09b78f86addaba4e16a053a0932e;p=platform%2Fkernel%2Flinux-rpi.git

resource: Add a resource_list_first_type helper

commit 494f8b10d832456a96be4ee7317425f6936cabc8 upstream.

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>
---

diff --git a/include/linux/resource_ext.h b/include/linux/resource_ext.h
index 06da59b..ff0339d 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 */