+ resource-introduce-is_type_match-helper-and-use-it.patch added to mm-nonmm-unstable branch

+ resource-introduce-is_type_match-helper-and-use-it.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: resource: introduce is_type_match() helper and use it
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     resource-introduce-is_type_match-helper-and-use-it.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/resource-introduce-is_type_match-helper-and-use-it.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: resource: introduce is_type_match() helper and use it
Date: Wed, 25 Sep 2024 18:43:35 +0300

There are already a couple of places where we may replace a few lines of
code by calling a helper, which increases readability while deduplicating
the code.

Introduce is_type_match() helper and use it.

Link: https://lkml.kernel.org/r/20240925154355.1170859-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/resource.c |   23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

--- a/kernel/resource.c~resource-introduce-is_type_match-helper-and-use-it
+++ a/kernel/resource.c
@@ -297,6 +297,11 @@ int release_resource(struct resource *ol
 
 EXPORT_SYMBOL(release_resource);
 
+static bool is_type_match(struct resource *p, unsigned long flags, unsigned long desc)
+{
+	return (p->flags & flags) == flags && (desc == IORES_DESC_NONE || desc == p->desc);
+}
+
 /**
  * find_next_iomem_res - Finds the lowest iomem resource that covers part of
  *			 [@start..@end].
@@ -339,13 +344,9 @@ static int find_next_iomem_res(resource_
 		if (p->end < start)
 			continue;
 
-		if ((p->flags & flags) != flags)
-			continue;
-		if ((desc != IORES_DESC_NONE) && (desc != p->desc))
-			continue;
-
 		/* Found a match, break */
-		break;
+		if (is_type_match(p, flags, desc))
+			break;
 	}
 
 	if (p) {
@@ -542,7 +543,7 @@ static int __region_intersects(struct re
 	int type = 0; int other = 0;
 	struct resource *p, *dp;
 	struct resource res, o;
-	bool is_type, covered;
+	bool covered;
 
 	res.start = start;
 	res.end = start + size - 1;
@@ -550,9 +551,7 @@ static int __region_intersects(struct re
 	for (p = parent->child; p ; p = p->sibling) {
 		if (!resource_intersection(p, &res, &o))
 			continue;
-		is_type = (p->flags & flags) == flags &&
-			(desc == IORES_DESC_NONE || desc == p->desc);
-		if (is_type) {
+		if (is_type_match(p, flags, desc)) {
 			type++;
 			continue;
 		}
@@ -572,9 +571,7 @@ static int __region_intersects(struct re
 		for_each_resource(p, dp, false) {
 			if (!resource_overlaps(dp, &res))
 				continue;
-			is_type = (dp->flags & flags) == flags &&
-				(desc == IORES_DESC_NONE || desc == dp->desc);
-			if (is_type) {
+			if (is_type_match(dp, flags, desc)) {
 				type++;
 				/*
 				 * Range from 'o.start' to 'dp->start'
_

Patches currently in -mm which might be from andriy.shevchenko@linux.intel.com are

resource-replace-open-coded-resource_intersection.patch
resource-introduce-is_type_match-helper-and-use-it.patch