[PATCH v7 22/22] swiotlb: remove unused SWIOTLB_FORCE flag
From: "Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>
Date: 2026-07-01 05:53:54
Also in:
linux-arm-kernel, linux-coco, linux-iommu, linux-s390, lkml
Subsystem:
dma mapping helpers, the rest · Maintainers:
Marek Szyprowski, Linus Torvalds
SWIOTLB_FORCE has no remaining in-tree users. Forced bouncing is now controlled through the swiotlb=force command line option via swiotlb_force_bounce. Remove the unused flag and simplify the force_bounce initialization. Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org> --- include/linux/swiotlb.h | 3 +-- kernel/dma/swiotlb.c | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index c3bf7ed6f7a6..9caca923c380 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h@@ -15,8 +15,7 @@ struct page; struct scatterlist; #define SWIOTLB_VERBOSE (1 << 0) /* verbose initialization */ -#define SWIOTLB_FORCE (1 << 1) /* force bounce buffering */ -#define SWIOTLB_ANY (1 << 2) /* allow any memory for the buffer */ +#define SWIOTLB_ANY (1 << 1) /* allow any memory for the buffer */ /* * Maximum allowable number of contiguous slabs to map,
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 8b7e47504304..897aba538c5b 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c@@ -400,8 +400,7 @@ void __init swiotlb_init_remap(bool addressing_limit, unsigned int flags, if (swiotlb_force_disable) return; - io_tlb_default_mem.force_bounce = - swiotlb_force_bounce || (flags & SWIOTLB_FORCE); + io_tlb_default_mem.force_bounce = swiotlb_force_bounce; #ifdef CONFIG_SWIOTLB_DYNAMIC if (!remap)
--
2.43.0