target/linux/bcm27xx/patches-5.4/950-0449-resource-Add-a-resource_list_first_type-helper.patch

   1 From dacb1a46835914b8c3862db15726bcc0a68af8f5 Mon Sep 17 00:00:00 2001
   2 From: Rob Herring <robh@kernel.org>
   3 Date: Mon, 28 Oct 2019 11:32:32 -0500
   4 Subject: [PATCH] resource: Add a resource_list_first_type helper
   5
   6 commit 494f8b10d832456a96be4ee7317425f6936cabc8 upstream.
   7
   8 A common pattern is looping over a resource_list just to get a matching
   9 entry with a specific type. Add resource_list_first_type() helper which
  10 implements this.
  11
  12 Signed-off-by: Rob Herring <robh@kernel.org>
  13 Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
  14 ---
  15  include/linux/resource_ext.h | 12 ++++++++++++
  16  1 file changed, 12 insertions(+)
  17
  18 --- a/include/linux/resource_ext.h
  19 +++ b/include/linux/resource_ext.h
  20 @@ -66,4 +66,16 @@ resource_list_destroy_entry(struct resou
  21  #define resource_list_for_each_entry_safe(entry, tmp, list)    \
  22         list_for_each_entry_safe((entry), (tmp), (list), node)
  23
  24 +static inline struct resource_entry *
  25 +resource_list_first_type(struct list_head *list, unsigned long type)
  26 +{
  27 +       struct resource_entry *entry;
  28 +
  29 +       resource_list_for_each_entry(entry, list) {
  30 +               if (resource_type(entry->res) == type)
  31 +                       return entry;
  32 +       }
  33 +       return NULL;
  34 +}
  35 +
  36  #endif /* _LINUX_RESOURCE_EXT_H */