Re: [PATCH] Staging: used dma_map_single in place of pci_map_single

[Greg KH <gregkh@linuxfoundation.org>]

On Tue, Nov 08, 2016 at 02:52:08AM +0530, Nadim Almas wrote:
> pci_map_single is unneeded and can be replaced with dma_map_single
> to avoid inconcitent api usage.
> The Coccinelle semantic patch used to make this change is as follows:
> @@ expression E1,E2,E3; @@
> - pci_map_single(E1,
> + dma_map_single(&E1->dev,
>      E2, E3,
> (
> - PCI_DMA_BIDIRECTIONAL
> + DMA_BIDIRCTIONAL
> |
> - PCI_DMA_TODEVICE
> + DMA_TO_DEVICE
> |
> - PCI_DMA_FROMDEVICE
> + DMA_FROM_DEVICE
> |
> - PCI_DMA_NONE
> + DMA_NONE_DEVICE
> )
>   )
> Signed-off-by: Nadim Almas <nadim.902@gmail.com>
> ---
>  drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c | 10 ++++++----
>  drivers/staging/rtl8192e/rtl8192e/rtl_core.c   | 12 ++++++------
>  drivers/staging/slicoss/slicoss.c              | 12 ++++++------
>  3 files changed, 18 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c b/drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c
> index 8d6bca6..a3c8c3a 100644
> --- a/drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c
> +++ b/drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c
> @@ -1184,8 +1184,9 @@ void  rtl92e_fill_tx_desc(struct net_device *dev, struct tx_desc *pdesc,
>  			  struct cb_desc *cb_desc, struct sk_buff *skb)
>  {
>  	struct r8192_priv *priv = rtllib_priv(dev);
> -	dma_addr_t mapping = pci_map_single(priv->pdev, skb->data, skb->len,
> -			 PCI_DMA_TODEVICE);
> +	dma_addr_t mapping = dma_map_single(&priv->pdev->dev, skb->data,
> +					    skb->len,
> +					    DMA_TO_DEVICE);
>  	struct tx_fwinfo_8190pci *pTxFwInfo;
>  
>  	pTxFwInfo = (struct tx_fwinfo_8190pci *)skb->data;
> @@ -1292,8 +1293,9 @@ void  rtl92e_fill_tx_cmd_desc(struct net_device *dev, struct tx_desc_cmd *entry,
>  			      struct cb_desc *cb_desc, struct sk_buff *skb)
>  {
>  	struct r8192_priv *priv = rtllib_priv(dev);
> -	dma_addr_t mapping = pci_map_single(priv->pdev, skb->data, skb->len,
> -			 PCI_DMA_TODEVICE);
> +	dma_addr_t mapping = dma_map_single(&priv->pdev->dev, skb->data,
> +					    skb->len,
> +					    DMA_TO_DEVICE);
>  
>  	if (pci_dma_mapping_error(priv->pdev, mapping))
>  		netdev_err(dev, "%s(): DMA Mapping error\n", __func__);
> diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_core.c b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
> index f985d88..ddd6523 100644
> --- a/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
> +++ b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
> @@ -1826,10 +1826,10 @@ static short _rtl92e_alloc_rx_ring(struct net_device *dev)
>  			skb->dev = dev;
>  			priv->rx_buf[rx_queue_idx][i] = skb;
>  			mapping = (dma_addr_t *)skb->cb;
> -			*mapping = pci_map_single(priv->pdev,
> +			*mapping = dma_map_single(&priv->pdev->dev,
> 						skb_tail_pointer_rsl(skb),
> 							priv->rxbuffersize,
> -						  PCI_DMA_FROMDEVICE);
> +						  DMA_FROM_DEVICE);
>  			if (pci_dma_mapping_error(priv->pdev, *mapping)) {
>  				dev_kfree_skb_any(skb);
>  				return -1;
> @@ -2104,10 +2104,10 @@ static void _rtl92e_rx_normal(struct net_device *dev)
>  
>  		priv->rx_buf[rx_queue_idx][priv->rx_idx[rx_queue_idx]] =
>  								 skb;
> -		*((dma_addr_t *) skb->cb) = pci_map_single(priv->pdev,
> -					    skb_tail_pointer_rsl(skb),
> -					    priv->rxbuffersize,
> -					    PCI_DMA_FROMDEVICE);
> +		*((dma_addr_t *) skb->cb) = dma_map_single(&priv->pdev->dev,
> +						skb_tail_pointer_rsl(skb),
> +							   priv->rxbuffersize,
> +							   DMA_FROM_DEVICE);
>  		if (pci_dma_mapping_error(priv->pdev,
>  					  *((dma_addr_t *)skb->cb))) {
>  			dev_kfree_skb_any(skb);
> diff --git a/drivers/staging/slicoss/slicoss.c b/drivers/staging/slicoss/slicoss.c
> index 062307a..2d76bfd 100644
> --- a/drivers/staging/slicoss/slicoss.c
> +++ b/drivers/staging/slicoss/slicoss.c
> @@ -1452,10 +1452,10 @@ static int slic_rcvqueue_fill(struct adapter *adapter)
>  		skb = alloc_skb(SLIC_RCVQ_RCVBUFSIZE, GFP_ATOMIC);
>  		if (skb) {
>  			paddr = (void *)(unsigned long)
> -				pci_map_single(adapter->pcidev,
> +				dma_map_single(&adapter->pcidev->dev,
> 								skb->data,
>  					       SLIC_RCVQ_RCVBUFSIZE,
> -					       PCI_DMA_FROMDEVICE);
> +					       DMA_FROM_DEVICE);
>  			paddrl = SLIC_GET_ADDR_LOW(paddr);
>  			paddrh = SLIC_GET_ADDR_HIGH(paddr);
>  
> @@ -1608,8 +1608,8 @@ static u32 slic_rcvqueue_reinsert(struct adapter *adapter, struct sk_buff *skb)
>  	struct device *dev;
>  
>  	paddr = (void *)(unsigned long)
> -		pci_map_single(adapter->pcidev, skb->head,
> -			       SLIC_RCVQ_RCVBUFSIZE, PCI_DMA_FROMDEVICE);
> +		dma_map_single(&adapter->pcidev->dev, skb->head,
> +			       SLIC_RCVQ_RCVBUFSIZE, DMA_FROM_DEVICE);
>  	rcvbuf->status = 0;
>  	skb->next = NULL;
>  
> @@ -1774,8 +1774,8 @@ static void slic_xmit_build_request(struct adapter *adapter,
>  	ihcmd->flags = adapter->port << IHFLG_IFSHFT;
>  	ihcmd->command = IHCMD_XMT_REQ;
>  	ihcmd->u.slic_buffers.totlen = skb->len;
> -	phys_addr = pci_map_single(adapter->pcidev, skb->data, skb->len,
> -			PCI_DMA_TODEVICE);
> +	phys_addr = dma_map_single(&adapter->pcidev->dev, skb->data, skb->len,
> +				   DMA_TO_DEVICE);
>  	if (pci_dma_mapping_error(adapter->pcidev, phys_addr)) {
>  		kfree_skb(skb);
>  		dev_err(&adapter->pcidev->dev, "DMA mapping error\n");

This patch does not apply to my staging-testing branch :(

Please fix up and resend, preferably one patch per driver.

thanks,

greg k-h