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SubjectRe: [PATCH 1/3] PCI: remove DMA unmap wrappers
[+cc folks from MAINTAINERS]

On Tue, Oct 09, 2018 at 04:08:22PM +0200, Christoph Hellwig wrote:
> Only some of these were still used by the cxgb4 driver, and that despite
> the fact that the driver otherwise uses the generic DMA API.

This is trivial and I intend to apply it, so just copying cxgb4 folks
as FYI.

> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> drivers/infiniband/hw/cxgb4/qp.c | 10 +++++-----
> drivers/infiniband/hw/cxgb4/t4.h | 2 +-
> include/linux/pci-dma.h | 12 ------------
> include/linux/pci.h | 1 -
> 4 files changed, 6 insertions(+), 19 deletions(-)
> delete mode 100644 include/linux/pci-dma.h
>
> diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
> index 347fe18b1a41..62d6f197ec0b 100644
> --- a/drivers/infiniband/hw/cxgb4/qp.c
> +++ b/drivers/infiniband/hw/cxgb4/qp.c
> @@ -99,7 +99,7 @@ static void dealloc_oc_sq(struct c4iw_rdev *rdev, struct t4_sq *sq)
> static void dealloc_host_sq(struct c4iw_rdev *rdev, struct t4_sq *sq)
> {
> dma_free_coherent(&(rdev->lldi.pdev->dev), sq->memsize, sq->queue,
> - pci_unmap_addr(sq, mapping));
> + dma_unmap_addr(sq, mapping));
> }
>
> static void dealloc_sq(struct c4iw_rdev *rdev, struct t4_sq *sq)
> @@ -132,7 +132,7 @@ static int alloc_host_sq(struct c4iw_rdev *rdev, struct t4_sq *sq)
> if (!sq->queue)
> return -ENOMEM;
> sq->phys_addr = virt_to_phys(sq->queue);
> - pci_unmap_addr_set(sq, mapping, sq->dma_addr);
> + dma_unmap_addr_set(sq, mapping, sq->dma_addr);
> return 0;
> }
>
> @@ -2521,7 +2521,7 @@ static void free_srq_queue(struct c4iw_srq *srq, struct c4iw_dev_ucontext *uctx,
>
> dma_free_coherent(&rdev->lldi.pdev->dev,
> wq->memsize, wq->queue,
> - pci_unmap_addr(wq, mapping));
> + dma_unmap_addr(wq, mapping));
> c4iw_rqtpool_free(rdev, wq->rqt_hwaddr, wq->rqt_size);
> kfree(wq->sw_rq);
> c4iw_put_qpid(rdev, wq->qid, uctx);
> @@ -2570,7 +2570,7 @@ static int alloc_srq_queue(struct c4iw_srq *srq, struct c4iw_dev_ucontext *uctx,
> goto err_free_rqtpool;
>
> memset(wq->queue, 0, wq->memsize);
> - pci_unmap_addr_set(wq, mapping, wq->dma_addr);
> + dma_unmap_addr_set(wq, mapping, wq->dma_addr);
>
> wq->bar2_va = c4iw_bar2_addrs(rdev, wq->qid, T4_BAR2_QTYPE_EGRESS,
> &wq->bar2_qid,
> @@ -2649,7 +2649,7 @@ static int alloc_srq_queue(struct c4iw_srq *srq, struct c4iw_dev_ucontext *uctx,
> err_free_queue:
> dma_free_coherent(&rdev->lldi.pdev->dev,
> wq->memsize, wq->queue,
> - pci_unmap_addr(wq, mapping));
> + dma_unmap_addr(wq, mapping));
> err_free_rqtpool:
> c4iw_rqtpool_free(rdev, wq->rqt_hwaddr, wq->rqt_size);
> err_free_pending_wrs:
> diff --git a/drivers/infiniband/hw/cxgb4/t4.h b/drivers/infiniband/hw/cxgb4/t4.h
> index e42021fd6fd6..fff6d48d262f 100644
> --- a/drivers/infiniband/hw/cxgb4/t4.h
> +++ b/drivers/infiniband/hw/cxgb4/t4.h
> @@ -397,7 +397,7 @@ struct t4_srq_pending_wr {
> struct t4_srq {
> union t4_recv_wr *queue;
> dma_addr_t dma_addr;
> - DECLARE_PCI_UNMAP_ADDR(mapping);
> + DEFINE_DMA_UNMAP_ADDR(mapping);
> struct t4_swrqe *sw_rq;
> void __iomem *bar2_va;
> u64 bar2_pa;
> diff --git a/include/linux/pci-dma.h b/include/linux/pci-dma.h
> deleted file mode 100644
> index 0f7aa7353ca3..000000000000
> --- a/include/linux/pci-dma.h
> +++ /dev/null
> @@ -1,12 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -#ifndef _LINUX_PCI_DMA_H
> -#define _LINUX_PCI_DMA_H
> -
> -#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) DEFINE_DMA_UNMAP_ADDR(ADDR_NAME);
> -#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) DEFINE_DMA_UNMAP_LEN(LEN_NAME);
> -#define pci_unmap_addr dma_unmap_addr
> -#define pci_unmap_addr_set dma_unmap_addr_set
> -#define pci_unmap_len dma_unmap_len
> -#define pci_unmap_len_set dma_unmap_len_set
> -
> -#endif
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 6925828f9f25..e938e80e59c1 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -1342,7 +1342,6 @@ int pci_set_vga_state(struct pci_dev *pdev, bool decode,
>
> /* kmem_cache style wrapper around pci_alloc_consistent() */
>
> -#include <linux/pci-dma.h>
> #include <linux/dmapool.h>
>
> #define pci_pool dma_pool
> --
> 2.19.0
>

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