swiotlb: silent unwanted warning "buffer is full"

commit 05e13bb57e6f181d7605f8608181c7e6fb7f591d upstream.

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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 0331de0e914409f4e7184851a93d93171a979526..dc81f16b909577a5d6037ad828b5a64c96dfbc2e 100644 (file)
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -727,7 +727,7 @@ swiotlb_alloc_buffer(struct device *dev, size_t size, dma_addr_t *dma_handle,
 
        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;