kernel: use correct buffer in test_dma()

82f87f34 · Manohar Vanga · 4f7cfb30 · 82f87f34
Commit 82f87f34 authored Aug 28, 2018 by Manohar Vanga
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ft-core.c kernel/ft-core.c +3 -3

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--- a/kernel/ft-core.c
+++ b/kernel/ft-core.c
@@ -356,7 +356,7 @@ static int gn4124_dma_sg(struct fmctdc_dev *ft,
 	enum gncore_dma_status status;
 	int mapbytes = 0;
 	int byteleft = size;
-	int ret;
+	int ret = 0;
 	int n = (size / PAGE_SIZE) + (size % PAGE_SIZE ? 1 : 0);
 	int i;
 	void *bufp;
@@ -452,7 +452,7 @@ out_sg_alloc:
 out_dma_item:
 	kfree(item);

-	return ret;
+	return (ret < 0 ? ret : 0);
 }


@@ -506,7 +506,7 @@ int test_dma(struct fmctdc_dev *ft, unsigned int buf_size, unsigned int use_sg)
 		goto out_buf2;

 	if (use_sg)
-		ret = gn4124_dma_sg(ft, 0, buf1, buf_size, DMA_FROM_DEVICE);
+		ret = gn4124_dma_sg(ft, 0, buf2, buf_size, DMA_FROM_DEVICE);
 	else
 		gn4124_dma_read(ft, 0, buf2, buf_size);