Commit 7cdb85df authored Oct 06, 2019 by Linus Torvalds

dma-mapping

Pull dma-mapping regression fix from Christoph Hellwig:
 "Revert an incorret hunk from a patch that caused problems on various
  arm boards (Andrey Smirnov)"

* tag 'dma-mapping-5.4-1' of git://git.infradead.org/users/hch/dma-mapping:
  dma-mapping: fix false positive warnings in dma_common_free_remap()

parents 43b815c6 2cf2aa6a

kernel/dma/remap.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -87,9 +87,9 @@ void dma_common_contiguous_remap(struct page page, size_t size,
		*/
		void dma_common_free_remap(void *cpu_addr, size_t size)
		{
		struct page **pages = dma_common_find_pages(cpu_addr);
		struct vm_struct *area = find_vm_area(cpu_addr);

		if (!pages) {
		if (!area \|\| area->flags != VM_DMA_COHERENT) {
		WARN(1, "trying to free invalid coherent area: %p\n", cpu_addr);
		return;
		}

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