From 894f3009d69c6f29f06443acbafb1c2f63271998 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 10 Jan 2018 19:03:19 +0100 Subject: media: ttusb-budget: Remove pci_zalloc_coherent() abuse Switch to a plain kzalloc() instead of pci_zalloc_coherent() to allocate memory for the USB DMA. Signed-off-by: Christoph Hellwig Signed-off-by: Bjorn Helgaas --- drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c b/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c index a142b9dc0feb..ea40a24947ba 100644 --- a/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c +++ b/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c @@ -102,7 +102,6 @@ struct ttusb { unsigned int isoc_in_pipe; void *iso_buffer; - dma_addr_t iso_dma_handle; struct urb *iso_urb[ISO_BUF_COUNT]; @@ -792,26 +791,17 @@ static void ttusb_free_iso_urbs(struct ttusb *ttusb) for (i = 0; i < ISO_BUF_COUNT; i++) usb_free_urb(ttusb->iso_urb[i]); - - pci_free_consistent(NULL, - ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF * - ISO_BUF_COUNT, ttusb->iso_buffer, - ttusb->iso_dma_handle); + kfree(ttusb->iso_buffer); } static int ttusb_alloc_iso_urbs(struct ttusb *ttusb) { int i; - ttusb->iso_buffer = pci_zalloc_consistent(NULL, - ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF * ISO_BUF_COUNT, - &ttusb->iso_dma_handle); - - if (!ttusb->iso_buffer) { - dprintk("%s: pci_alloc_consistent - not enough memory\n", - __func__); + ttusb->iso_buffer = kcalloc(FRAMES_PER_ISO_BUF * ISO_BUF_COUNT, + ISO_FRAME_SIZE, GFP_KERNEL); + if (!ttusb->iso_buffer) return -ENOMEM; - } for (i = 0; i < ISO_BUF_COUNT; i++) { struct urb *urb; -- cgit 1.4.1 From 8d669f93b4b1405946af77a155c1df4fe1b526b1 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 10 Jan 2018 19:03:20 +0100 Subject: media: ttusb-dec: Remove pci_zalloc_coherent() abuse Switch to a plain kzalloc() instead of pci_zalloc_coherent() to allocate memory for the USB DMA. Signed-off-by: Christoph Hellwig Signed-off-by: Bjorn Helgaas --- drivers/media/usb/ttusb-dec/ttusb_dec.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/drivers/media/usb/ttusb-dec/ttusb_dec.c b/drivers/media/usb/ttusb-dec/ttusb_dec.c index cdefb5dfbbdc..4d5acdf578a6 100644 --- a/drivers/media/usb/ttusb-dec/ttusb_dec.c +++ b/drivers/media/usb/ttusb-dec/ttusb_dec.c @@ -127,7 +127,6 @@ struct ttusb_dec { struct urb *irq_urb; dma_addr_t irq_dma_handle; void *iso_buffer; - dma_addr_t iso_dma_handle; struct urb *iso_urb[ISO_BUF_COUNT]; int iso_stream_count; struct mutex iso_mutex; @@ -1185,11 +1184,7 @@ static void ttusb_dec_free_iso_urbs(struct ttusb_dec *dec) for (i = 0; i < ISO_BUF_COUNT; i++) usb_free_urb(dec->iso_urb[i]); - - pci_free_consistent(NULL, - ISO_FRAME_SIZE * (FRAMES_PER_ISO_BUF * - ISO_BUF_COUNT), - dec->iso_buffer, dec->iso_dma_handle); + kfree(dec->iso_buffer); } static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec) @@ -1198,15 +1193,10 @@ static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec) dprintk("%s\n", __func__); - dec->iso_buffer = pci_zalloc_consistent(NULL, - ISO_FRAME_SIZE * (FRAMES_PER_ISO_BUF * ISO_BUF_COUNT), - &dec->iso_dma_handle); - - if (!dec->iso_buffer) { - dprintk("%s: pci_alloc_consistent - not enough memory\n", - __func__); + dec->iso_buffer = kcalloc(FRAMES_PER_ISO_BUF * ISO_BUF_COUNT, + ISO_FRAME_SIZE, GFP_KERNEL); + if (!dec->iso_buffer) return -ENOMEM; - } for (i = 0; i < ISO_BUF_COUNT; i++) { struct urb *urb; -- cgit 1.4.1 From c08fa1608ddbf21a00ce4da54b0d90635cf5c1de Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 10 Jan 2018 19:03:21 +0100 Subject: net: tsi108: Use DMA API properly We need to pass a struct device to the DMA API, even if some architectures still support that for legacy reasons, and should not mix it with the old PCI DMA API. Note that the driver also seems to never actually unmap its DMA mappings, but to fix that we'll need someone more familar with the driver. Signed-off-by: Christoph Hellwig Signed-off-by: Bjorn Helgaas --- drivers/net/ethernet/tundra/tsi108_eth.c | 36 ++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/tundra/tsi108_eth.c b/drivers/net/ethernet/tundra/tsi108_eth.c index 0624b71ab5d4..edcd1e60b30d 100644 --- a/drivers/net/ethernet/tundra/tsi108_eth.c +++ b/drivers/net/ethernet/tundra/tsi108_eth.c @@ -152,6 +152,8 @@ struct tsi108_prv_data { u32 msg_enable; /* debug message level */ struct mii_if_info mii_if; unsigned int init_media; + + struct platform_device *pdev; }; /* Structure for a device driver */ @@ -703,17 +705,18 @@ static int tsi108_send_packet(struct sk_buff * skb, struct net_device *dev) data->txskbs[tx] = skb; if (i == 0) { - data->txring[tx].buf0 = dma_map_single(NULL, skb->data, - skb_headlen(skb), DMA_TO_DEVICE); + data->txring[tx].buf0 = dma_map_single(&data->pdev->dev, + skb->data, skb_headlen(skb), + DMA_TO_DEVICE); data->txring[tx].len = skb_headlen(skb); misc |= TSI108_TX_SOF; } else { const skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1]; - data->txring[tx].buf0 = skb_frag_dma_map(NULL, frag, - 0, - skb_frag_size(frag), - DMA_TO_DEVICE); + data->txring[tx].buf0 = + skb_frag_dma_map(&data->pdev->dev, frag, + 0, skb_frag_size(frag), + DMA_TO_DEVICE); data->txring[tx].len = skb_frag_size(frag); } @@ -808,9 +811,9 @@ static int tsi108_refill_rx(struct net_device *dev, int budget) if (!skb) break; - data->rxring[rx].buf0 = dma_map_single(NULL, skb->data, - TSI108_RX_SKB_SIZE, - DMA_FROM_DEVICE); + data->rxring[rx].buf0 = dma_map_single(&data->pdev->dev, + skb->data, TSI108_RX_SKB_SIZE, + DMA_FROM_DEVICE); /* Sometimes the hardware sets blen to zero after packet * reception, even though the manual says that it's only ever @@ -1308,15 +1311,15 @@ static int tsi108_open(struct net_device *dev) data->id, dev->irq, dev->name); } - data->rxring = dma_zalloc_coherent(NULL, rxring_size, &data->rxdma, - GFP_KERNEL); + data->rxring = dma_zalloc_coherent(&data->pdev->dev, rxring_size, + &data->rxdma, GFP_KERNEL); if (!data->rxring) return -ENOMEM; - data->txring = dma_zalloc_coherent(NULL, txring_size, &data->txdma, - GFP_KERNEL); + data->txring = dma_zalloc_coherent(&data->pdev->dev, txring_size, + &data->txdma, GFP_KERNEL); if (!data->txring) { - pci_free_consistent(NULL, rxring_size, data->rxring, + dma_free_coherent(&data->pdev->dev, rxring_size, data->rxring, data->rxdma); return -ENOMEM; } @@ -1428,10 +1431,10 @@ static int tsi108_close(struct net_device *dev) dev_kfree_skb(skb); } - dma_free_coherent(0, + dma_free_coherent(&data->pdev->dev, TSI108_RXRING_LEN * sizeof(rx_desc), data->rxring, data->rxdma); - dma_free_coherent(0, + dma_free_coherent(&data->pdev->dev, TSI108_TXRING_LEN * sizeof(tx_desc), data->txring, data->txdma); @@ -1576,6 +1579,7 @@ tsi108_init_one(struct platform_device *pdev) printk("tsi108_eth%d: probe...\n", pdev->id); data = netdev_priv(dev); data->dev = dev; + data->pdev = pdev; pr_debug("tsi108_eth%d:regs:phyresgs:phy:irq_num=0x%x:0x%x:0x%x:0x%x\n", pdev->id, einfo->regs, einfo->phyregs, -- cgit 1.4.1 From 4167b2ad5182fbd5c4ab55925d20f1659533f89c Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 10 Jan 2018 19:03:22 +0100 Subject: PCI: Remove NULL device handling from PCI DMA API Historically some ISA drivers used the old PCI DMA API with a NULL pdev argument, but these days this isn't used and not too useful due to the per-device DMA ops, so remove it. Signed-off-by: Christoph Hellwig Signed-off-by: Bjorn Helgaas --- include/linux/pci-dma-compat.h | 27 +++++++++++++-------------- 1 file changed, 13 insertions(+), 14 deletions(-) diff --git a/include/linux/pci-dma-compat.h b/include/linux/pci-dma-compat.h index d1f9fdade1e0..0dd1a3f7b309 100644 --- a/include/linux/pci-dma-compat.h +++ b/include/linux/pci-dma-compat.h @@ -17,91 +17,90 @@ static inline void * pci_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle) { - return dma_alloc_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, dma_handle, GFP_ATOMIC); + return dma_alloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC); } static inline void * pci_zalloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle) { - return dma_zalloc_coherent(hwdev == NULL ? NULL : &hwdev->dev, - size, dma_handle, GFP_ATOMIC); + return dma_zalloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC); } static inline void pci_free_consistent(struct pci_dev *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle) { - dma_free_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, vaddr, dma_handle); + dma_free_coherent(&hwdev->dev, size, vaddr, dma_handle); } static inline dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction) { - return dma_map_single(hwdev == NULL ? NULL : &hwdev->dev, ptr, size, (enum dma_data_direction)direction); + return dma_map_single(&hwdev->dev, ptr, size, (enum dma_data_direction)direction); } static inline void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr, size_t size, int direction) { - dma_unmap_single(hwdev == NULL ? NULL : &hwdev->dev, dma_addr, size, (enum dma_data_direction)direction); + dma_unmap_single(&hwdev->dev, dma_addr, size, (enum dma_data_direction)direction); } static inline dma_addr_t pci_map_page(struct pci_dev *hwdev, struct page *page, unsigned long offset, size_t size, int direction) { - return dma_map_page(hwdev == NULL ? NULL : &hwdev->dev, page, offset, size, (enum dma_data_direction)direction); + return dma_map_page(&hwdev->dev, page, offset, size, (enum dma_data_direction)direction); } static inline void pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address, size_t size, int direction) { - dma_unmap_page(hwdev == NULL ? NULL : &hwdev->dev, dma_address, size, (enum dma_data_direction)direction); + dma_unmap_page(&hwdev->dev, dma_address, size, (enum dma_data_direction)direction); } static inline int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg, int nents, int direction) { - return dma_map_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction); + return dma_map_sg(&hwdev->dev, sg, nents, (enum dma_data_direction)direction); } static inline void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg, int nents, int direction) { - dma_unmap_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction); + dma_unmap_sg(&hwdev->dev, sg, nents, (enum dma_data_direction)direction); } static inline void pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t dma_handle, size_t size, int direction) { - dma_sync_single_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction); + dma_sync_single_for_cpu(&hwdev->dev, dma_handle, size, (enum dma_data_direction)direction); } static inline void pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle, size_t size, int direction) { - dma_sync_single_for_device(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction); + dma_sync_single_for_device(&hwdev->dev, dma_handle, size, (enum dma_data_direction)direction); } static inline void pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg, int nelems, int direction) { - dma_sync_sg_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction); + dma_sync_sg_for_cpu(&hwdev->dev, sg, nelems, (enum dma_data_direction)direction); } static inline void pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg, int nelems, int direction) { - dma_sync_sg_for_device(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction); + dma_sync_sg_for_device(&hwdev->dev, sg, nelems, (enum dma_data_direction)direction); } static inline int -- cgit 1.4.1