Commit 7607cb73 authored Feb 17, 2020 by Christoph Hellwig

ARM/dma-mapping: take the bus limit into account in __dma_alloc



The DMA coherent allocator needs to take bus limits into account for
picking the zone that the memory is allocated from.

Reported-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Roger Quadros <rogerq@ti.com>

parent fd509249

arch/arm/mm/dma-mapping.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -658,7 +658,7 @@ static void __dma_alloc(struct device dev, size_t size, dma_addr_t *handle,
		gfp_t gfp, pgprot_t prot, bool is_coherent,
		unsigned long attrs, const void *caller)
		{
		u64 mask = dev->coherent_dma_mask;
		u64 mask = min_not_zero(dev->coherent_dma_mask, dev->bus_dma_limit);
		struct page *page = NULL;
		void *addr;
		bool allowblock, cma;

Admin message