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iommu: simplify list initialization in iommu_create_device_direct_mappings()

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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>
This commit is contained in:
Can Peng 2025-12-09 15:15:13 +08:00 committed by Joerg Roedel
parent a8258ffed2
commit 16e3423fc7
1 changed files with 1 additions and 2 deletions
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3
drivers/iommu/iommu.c
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@ -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;