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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>
This commit is contained in:
Christoph Hellwig 2020-02-17 12:50:23 +01:00
parent fd50924917
commit 7607cb733f
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mm/dma-mapping.c
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@ -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;