Messages in this thread Patch in this message | | | Date | Thu, 3 May 2018 23:54:46 +0200 | From | Jean Delvare <> | Subject | [PATCH] swiotlb: Silent unwanted warning "buffer is full" |
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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: 0176adb00406 ("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 --- lib/swiotlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-4.16.orig/lib/swiotlb.c 2018-05-02 15:06:49.677769532 +0200 +++ linux-4.16/lib/swiotlb.c 2018-05-03 15:04:27.136921225 +0200 @@ -727,7 +727,7 @@ swiotlb_alloc_buffer(struct device *dev, phys_addr = swiotlb_tbl_map_single(dev, swiotlb_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) goto out_warn;
-- Jean Delvare SUSE L3 Support
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