---

yaml
---
r: 233291
b: refs/heads/master
c: 1fa81c2
h: refs/heads/master
i:
  233289: 7cb4887
  233287: b8b62f2
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b9b3f82f94b52ebb0bbdf6cd77ccc5e8ee3f53b5
+refs/heads/master: 1fa81c270da4d8dffa84fcca448654a10ed0a5dc

trunk/drivers/dma/imx-sdma.c

@@ -925,10 +925,24 @@ static struct dma_async_tx_descriptor *sdma_prep_slave_sg(
 			ret =  -EINVAL;
 			goto err_out;
 		}
-		if (sdmac->word_size == DMA_SLAVE_BUSWIDTH_4_BYTES)
+
+		switch (sdmac->word_size) {
+		case DMA_SLAVE_BUSWIDTH_4_BYTES:
 			bd->mode.command = 0;
-		else
-			bd->mode.command = sdmac->word_size;
+			if (count & 3 || sg->dma_address & 3)
+				return NULL;
+			break;
+		case DMA_SLAVE_BUSWIDTH_2_BYTES:
+			bd->mode.command = 2;
+			if (count & 1 || sg->dma_address & 1)
+				return NULL;
+			break;
+		case DMA_SLAVE_BUSWIDTH_1_BYTE:
+			bd->mode.command = 1;
+			break;
+		default:
+			return NULL;
+		}
 
 		param = BD_DONE | BD_EXTD | BD_CONT;