cross-tree: phase out dma_zalloc_coherent()

We already need to zero out memory for dma_alloc_coherent(), as such
using dma_zalloc_coherent() is superflous. Phase it out.

This change was generated with the following Coccinelle SmPL patch:

@ replace_dma_zalloc_coherent @
expression dev, size, data, handle, flags;
@@

-dma_zalloc_coherent(dev, size, handle, flags)
+dma_alloc_coherent(dev, size, handle, flags)

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
[hch: re-ran the script on the latest tree]
Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 15 insertions, 24 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
index e965cc588850..9e850c25877b 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
@@ -711,30 +711,24 @@ static int iwl_pcie_alloc_rxq_dma(struct iwl_trans *trans,
 	 * Allocate the circular buffer of Read Buffer Descriptors
 	 * (RBDs)
 	 */
-	rxq->bd = dma_zalloc_coherent(dev,
-				      free_size * rxq->queue_size,
-				      &rxq->bd_dma, GFP_KERNEL);
+	rxq->bd = dma_alloc_coherent(dev, free_size * rxq->queue_size,
+				     &rxq->bd_dma, GFP_KERNEL);
 	if (!rxq->bd)
 		goto err;
 
 	if (trans->cfg->mq_rx_supported) {
-		rxq->used_bd = dma_zalloc_coherent(dev,
-						   (use_rx_td ?
-						   sizeof(*rxq->cd) :
-						   sizeof(__le32)) *
-						   rxq->queue_size,
-						   &rxq->used_bd_dma,
-						   GFP_KERNEL);
+		rxq->used_bd = dma_alloc_coherent(dev,
+						  (use_rx_td ? sizeof(*rxq->cd) : sizeof(__le32)) * rxq->queue_size,
+						  &rxq->used_bd_dma,
+						  GFP_KERNEL);
 		if (!rxq->used_bd)
 			goto err;
 	}
 
 	/* Allocate the driver's pointer to receive buffer status */
-	rxq->rb_stts = dma_zalloc_coherent(dev, use_rx_td ?
-					   sizeof(__le16) :
-					   sizeof(struct iwl_rb_status),
-					   &rxq->rb_stts_dma,
-					   GFP_KERNEL);
+	rxq->rb_stts = dma_alloc_coherent(dev,
+					  use_rx_td ? sizeof(__le16) : sizeof(struct iwl_rb_status),
+					  &rxq->rb_stts_dma, GFP_KERNEL);
 	if (!rxq->rb_stts)
 		goto err;
 
@@ -742,16 +736,14 @@ static int iwl_pcie_alloc_rxq_dma(struct iwl_trans *trans,
 		return 0;
 
 	/* Allocate the driver's pointer to TR tail */
-	rxq->tr_tail = dma_zalloc_coherent(dev, sizeof(__le16),
-					   &rxq->tr_tail_dma,
-					   GFP_KERNEL);
+	rxq->tr_tail = dma_alloc_coherent(dev, sizeof(__le16),
+					  &rxq->tr_tail_dma, GFP_KERNEL);
 	if (!rxq->tr_tail)
 		goto err;
 
 	/* Allocate the driver's pointer to CR tail */
-	rxq->cr_tail = dma_zalloc_coherent(dev, sizeof(__le16),
-					   &rxq->cr_tail_dma,
-					   GFP_KERNEL);
+	rxq->cr_tail = dma_alloc_coherent(dev, sizeof(__le16),
+					  &rxq->cr_tail_dma, GFP_KERNEL);
 	if (!rxq->cr_tail)
 		goto err;
 	/*
@@ -1947,9 +1939,8 @@ int iwl_pcie_alloc_ict(struct iwl_trans *trans)
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
 
 	trans_pcie->ict_tbl =
-		dma_zalloc_coherent(trans->dev, ICT_SIZE,
-				   &trans_pcie->ict_tbl_dma,
-				   GFP_KERNEL);
+		dma_alloc_coherent(trans->dev, ICT_SIZE,
+				   &trans_pcie->ict_tbl_dma, GFP_KERNEL);
 	if (!trans_pcie->ict_tbl)
 		return -ENOMEM;