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swiotlb: silent unwanted warning "buffer is full" 

If DMA_ATTR_NO_WARN is passed to swiotlb_alloc_buffer(), it should be
passed further down to swiotlb_tbl_map_single(). Otherwise we escape
half of the warnings but still log the other half.

This is one of the multiple causes of spurious warnings reported at:
https://bugs.freedesktop.org/show_bug.cgi?id=104082

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: 0176adb004 ("swiotlb: refactor coherent buffer allocation")
Cc: Christoph Hellwig <hch@lst.de>
Cc: Christian König <christian.koenig@amd.com>
Cc: Michel Dänzer <michel@daenzer.net>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: stable@vger.kernel.org # v4.16
This commit is contained in:
Jean Delvare 2018-05-12 11:57:37 +02:00 committed by Christoph Hellwig
parent 75bc37fefc
commit 05e13bb57e
1 changed files with 1 additions and 1 deletions
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2
lib/swiotlb.c
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@ -714,7 +714,7 @@ swiotlb_alloc_buffer(struct device *dev, size_t size, dma_addr_t *dma_handle,
phys_addr = swiotlb_tbl_map_single(dev, phys_addr = swiotlb_tbl_map_single(dev,
__phys_to_dma(dev, io_tlb_start), __phys_to_dma(dev, io_tlb_start),
0, size, DMA_FROM_DEVICE, 0); 0, size, DMA_FROM_DEVICE, attrs);
if (phys_addr == SWIOTLB_MAP_ERROR) if (phys_addr == SWIOTLB_MAP_ERROR)
goto out_warn; goto out_warn;