Merge tag 'dma-mapping-6.4-2023-04-28' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping updates from Christoph Hellwig:

 - fix a PageHighMem check in dma-coherent initialization (Doug Berger)

 - clean up the coherency defaul initialiation (Jiaxun Yang)

 - add cacheline to user/kernel dma-debug space dump messages (Desnes
   Nunes, Geert Uytterhoeve)

 - swiotlb statistics improvements (Michael Kelley)

 - misc cleanups (Petr Tesarik)

* tag 'dma-mapping-6.4-2023-04-28' of git://git.infradead.org/users/hch/dma-mapping:
  swiotlb: Omit total_used and used_hiwater if !CONFIG_DEBUG_FS
  swiotlb: track and report io_tlb_used high water marks in debugfs
  swiotlb: fix debugfs reporting of reserved memory pools
  swiotlb: relocate PageHighMem test away from rmem_swiotlb_setup
  of: address: always use dma_default_coherent for default coherency
  dma-mapping: provide CONFIG_ARCH_DMA_DEFAULT_COHERENT
  dma-mapping: provide a fallback dma_default_coherent
  dma-debug: Use %pa to format phys_addr_t
  dma-debug: add cacheline to user/kernel space dump messages
  dma-debug: small dma_debug_entry's comment and variable name updates
  dma-direct: cleanup parameters to dma_direct_optimal_gfp_mask

drivers/of/address.c

@@ -1037,7 +1037,7 @@ phys_addr_t __init of_dma_get_max_cpu_address(struct device_node *np)
 bool of_dma_is_coherent(struct device_node *np)
 {
 	struct device_node *node;
-	bool is_coherent = IS_ENABLED(CONFIG_OF_DMA_DEFAULT_COHERENT);
+	bool is_coherent = dma_default_coherent;
 
 	node = of_node_get(np);