[PATCH 4/7] docs: swiotlb: Fix maximum mapping size helper

[Karl Mehltretter <kmehltretter@gmail.com>]

The DMA helper is named dma_max_mapping_size(), not
dma_map_mapping_size().

Fixes: c93f261dfc39 ("Documentation/core-api: add swiotlb documentation")
Assisted-by: Codex:gpt-5.6-sol
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
---
 Documentation/core-api/swiotlb.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/core-api/swiotlb.rst b/Documentation/core-api/swiotlb.rst
index 9e0fe027dd3bd..303999f09ea03 100644
--- a/Documentation/core-api/swiotlb.rst
+++ b/Documentation/core-api/swiotlb.rst
@@ -107,7 +107,7 @@ A single allocation from swiotlb is limited to IO_TLB_SIZE * IO_TLB_SEGSIZE
 bytes, which is 256 KiB with current definitions. When a device's DMA settings
 are such that the device might use swiotlb, the maximum size of a DMA segment
 must be limited to that 256 KiB. This value is communicated to higher-level
-kernel code via dma_map_mapping_size() and swiotlb_max_mapping_size(). If the
+kernel code via dma_max_mapping_size() and swiotlb_max_mapping_size(). If the
 higher-level code fails to account for this limit, it may make requests that
 are too large for swiotlb, and get a "swiotlb full" error.
 
-- 
2.53.0