fixup! dmaengine: dw-axi-dmac: Fix alignment checks

pelwell · pelwell · commit 617b6a80b54e · 2025-03-24T15:16:28.000Z
Signed-off-by: Phil Elwell &lt;phil@raspberrypi.com&gt;
diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
@@ -794,8 +794,8 @@ static int dw_axi_dma_set_hw_desc(struct axi_dma_chan *chan,
 		return -EINVAL;
 	}
 
-	if (len % reg_width) {
-		dev_err(chan->chip->dev, "length not aligned to device width\n");
+	if (len % (1 << reg_width)) {
+		dev_err_ratelimited(chan->chip->dev, "length %ld not aligned to device width %d\n", len, 1 << reg_width);
 		return -EINVAL;
 	}
 

Original file line number	Diff line number	Diff line change
`@@ -794,8 +794,8 @@ static int dw_axi_dma_set_hw_desc(struct axi_dma_chan *chan,`
`794`	`794`	`return -EINVAL;`
`795`	`795`	`}`
`796`	`796`
`797`		`- if (len % reg_width) {`
`798`		`- dev_err(chan->chip->dev, "length not aligned to device width\n");`
	`797`	`+ if (len % (1 << reg_width)) {`
	`798`	`+ dev_err_ratelimited(chan->chip->dev, "length %ld not aligned to device width %d\n", len, 1 << reg_width);`
`799`	`799`	`return -EINVAL;`
`800`	`800`	`}`
`801`	`801`