1 files changed, 13 insertions, 7 deletions

diff --git a/drivers/dma/qcom/qcom_adm.c b/drivers/dma/qcom/qcom_adm.c
index c77d9de853de..d56caf1681ff 100644
--- a/drivers/dma/qcom/qcom_adm.c
+++ b/drivers/dma/qcom/qcom_adm.c
@@ -379,13 +379,13 @@ static struct dma_async_tx_descriptor *adm_prep_slave_sg(struct dma_chan *chan,
 		if (blk_size < 0) {
 			dev_err(adev->dev, "invalid burst value: %d\n",
 				burst);
-			return ERR_PTR(-EINVAL);
+			return NULL;
 		}
 
 		crci = achan->crci & 0xf;
 		if (!crci || achan->crci > 0x1f) {
 			dev_err(adev->dev, "invalid crci value\n");
-			return ERR_PTR(-EINVAL);
+			return NULL;
 		}
 	}
 
@@ -403,8 +403,10 @@ static struct dma_async_tx_descriptor *adm_prep_slave_sg(struct dma_chan *chan,
 	}
 
 	async_desc = kzalloc(sizeof(*async_desc), GFP_NOWAIT);
-	if (!async_desc)
-		return ERR_PTR(-ENOMEM);
+	if (!async_desc) {
+		dev_err(adev->dev, "not enough memory for async_desc struct\n");
+		return NULL;
+	}
 
 	async_desc->mux = achan->mux ? ADM_CRCI_CTL_MUX_SEL : 0;
 	async_desc->crci = crci;
@@ -414,8 +416,10 @@ static struct dma_async_tx_descriptor *adm_prep_slave_sg(struct dma_chan *chan,
 				sizeof(*cple) + 2 * ADM_DESC_ALIGN;
 
 	async_desc->cpl = kzalloc(async_desc->dma_len, GFP_NOWAIT);
-	if (!async_desc->cpl)
+	if (!async_desc->cpl) {
+		dev_err(adev->dev, "not enough memory for cpl struct\n");
 		goto free;
+	}
 
 	async_desc->adev = adev;
 
@@ -437,8 +441,10 @@ static struct dma_async_tx_descriptor *adm_prep_slave_sg(struct dma_chan *chan,
 	async_desc->dma_addr = dma_map_single(adev->dev, async_desc->cpl,
 					      async_desc->dma_len,
 					      DMA_TO_DEVICE);
-	if (dma_mapping_error(adev->dev, async_desc->dma_addr))
+	if (dma_mapping_error(adev->dev, async_desc->dma_addr)) {
+		dev_err(adev->dev, "dma mapping error for cpl\n");
 		goto free;
+	}
 
 	cple_addr = async_desc->dma_addr + ((void *)cple - async_desc->cpl);
 
@@ -454,7 +460,7 @@ static struct dma_async_tx_descriptor *adm_prep_slave_sg(struct dma_chan *chan,
 
 free:
 	kfree(async_desc);
-	return ERR_PTR(-ENOMEM);
+	return NULL;
 }
 
 /**