[PATCH] swiotlb: Fix inversed DMA_ATTR_NO_WARN test

[Michel Dänzer]

From: Michel Dänzer <michel.daenzer at amd.com>

The result was printing the warning only when we were explicitly asked
not to.

Cc: stable at vger.kernel.org
Fixes: 0176adb004065d6815a8e67946752df4cd947c5b "swiotlb: refactor
 coherent buffer allocation"
Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 lib/swiotlb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index c43ec2271469..e9ac21540628 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -750,7 +750,7 @@ swiotlb_alloc_buffer(struct device *dev, size_t size, dma_addr_t *dma_handle,
 	swiotlb_tbl_unmap_single(dev, phys_addr, size, DMA_TO_DEVICE,
 			DMA_ATTR_SKIP_CPU_SYNC);
 out_warn:
-	if ((attrs & DMA_ATTR_NO_WARN) && printk_ratelimit()) {
+	if (!(attrs & DMA_ATTR_NO_WARN) && printk_ratelimit()) {
 		dev_warn(dev,
 			"swiotlb: coherent allocation failed, size=%zu\n",
 			size);
-- 
2.17.0