Merge tag 'dma-mapping-7.0-2026-04-09' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux

Pull dma-mapping fix from Marek Szyprowski:
 "A fix for DMA-mapping subsystem, which hides annoying, false-positive
  warnings from DMA-API debug on coherent platforms like x86_64 (Mikhail
  Gavrilov)"

* tag 'dma-mapping-7.0-2026-04-09' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux:
  dma-debug: suppress cacheline overlap warning when arch has no DMA alignment requirement

Author: torvalds

kernel/dma/debug.c

@@ -615,6 +615,7 @@ static void add_dma_entry(struct dma_debug_entry *entry, unsigned long attrs)
 	} else if (rc == -EEXIST &&
 		   !(attrs & DMA_ATTR_SKIP_CPU_SYNC) &&
 		   !(entry->is_cache_clean && overlap_cache_clean) &&
+		   dma_get_cache_alignment() >= L1_CACHE_BYTES &&
 		   !(IS_ENABLED(CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC) &&
 		     is_swiotlb_active(entry->dev))) {
 		err_printk(entry->dev, entry,