From: Can Peng <pengcan@kylinos.cn>
Date: Tue, 9 Dec 2025 07:15:13 +0000 (+0800)
Subject: iommu: simplify list initialization in iommu_create_device_direct_mappings()
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=16e3423fc755cf9ddcceefaf70869311046928e2;p=thirdparty%2Fkernel%2Flinux.git

iommu: simplify list initialization in iommu_create_device_direct_mappings()

Use LIST_HEAD() to declare and initialize the 'mappings' list head in
iommu_create_device_direct_mappings() instead of separate declaration and
INIT_LIST_HEAD(). This simplifies the code by combining declaration and
initialization into a single idiomatic form, improving readability without
changing functionality.

Signed-off-by: Can Peng <pengcan@kylinos.cn>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 585b13bcc8cfd..4926a43118e6f 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1180,12 +1180,11 @@ static int iommu_create_device_direct_mappings(struct iommu_domain *domain,
 					       struct device *dev)
 {
 	struct iommu_resv_region *entry;
-	struct list_head mappings;
+	LIST_HEAD(mappings);
 	unsigned long pg_size;
 	int ret = 0;
 
 	pg_size = domain->pgsize_bitmap ? 1UL << __ffs(domain->pgsize_bitmap) : 0;
-	INIT_LIST_HEAD(&mappings);
 
 	if (WARN_ON_ONCE(iommu_is_dma_domain(domain) && !pg_size))
 		return -EINVAL;