| Message ID | 20200907201942.321568-1-christophe.jaillet@wanadoo.fr |
|---|---|
| State | New |
| Headers | show |
| Series | airo: switch from 'pci_' to 'dma_' API | expand |
Christophe JAILLET <christophe.jaillet@wanadoo.fr> wrote: > The wrappers in include/linux/pci-dma-compat.h should go away. > > The patch has been generated with the coccinelle script below and has been > hand modified to replace GFP_ with a correct flag. > It has been compile tested. > > When memory is allocated in 'mpi_map_card()' GFP_KERNEL can be used because > this function is called from a probe or a module_init() function and no > spinlock is taken in the between. > > The call chains are: > airo_init_module module_init function in 'airo.c' > or > airo_probe .probe function in 'airo_cs.c' > --> airo_config > > followed in both cases by: > --> init_airo_card > --> _init_airo_card > --> mpi_map_card > > > @@ > @@ > - PCI_DMA_BIDIRECTIONAL > + DMA_BIDIRECTIONAL > > @@ > @@ > - PCI_DMA_TODEVICE > + DMA_TO_DEVICE > > @@ > @@ > - PCI_DMA_FROMDEVICE > + DMA_FROM_DEVICE > > @@ > @@ > - PCI_DMA_NONE > + DMA_NONE > > @@ > expression e1, e2, e3; > @@ > - pci_alloc_consistent(e1, e2, e3) > + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) > > @@ > expression e1, e2, e3; > @@ > - pci_zalloc_consistent(e1, e2, e3) > + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) > > @@ > expression e1, e2, e3, e4; > @@ > - pci_free_consistent(e1, e2, e3, e4) > + dma_free_coherent(&e1->dev, e2, e3, e4) > > @@ > expression e1, e2, e3, e4; > @@ > - pci_map_single(e1, e2, e3, e4) > + dma_map_single(&e1->dev, e2, e3, e4) > > @@ > expression e1, e2, e3, e4; > @@ > - pci_unmap_single(e1, e2, e3, e4) > + dma_unmap_single(&e1->dev, e2, e3, e4) > > @@ > expression e1, e2, e3, e4, e5; > @@ > - pci_map_page(e1, e2, e3, e4, e5) > + dma_map_page(&e1->dev, e2, e3, e4, e5) > > @@ > expression e1, e2, e3, e4; > @@ > - pci_unmap_page(e1, e2, e3, e4) > + dma_unmap_page(&e1->dev, e2, e3, e4) > > @@ > expression e1, e2, e3, e4; > @@ > - pci_map_sg(e1, e2, e3, e4) > + dma_map_sg(&e1->dev, e2, e3, e4) > > @@ > expression e1, e2, e3, e4; > @@ > - pci_unmap_sg(e1, e2, e3, e4) > + dma_unmap_sg(&e1->dev, e2, e3, e4) > > @@ > expression e1, e2, e3, e4; > @@ > - pci_dma_sync_single_for_cpu(e1, e2, e3, e4) > + dma_sync_single_for_cpu(&e1->dev, e2, e3, e4) > > @@ > expression e1, e2, e3, e4; > @@ > - pci_dma_sync_single_for_device(e1, e2, e3, e4) > + dma_sync_single_for_device(&e1->dev, e2, e3, e4) > > @@ > expression e1, e2, e3, e4; > @@ > - pci_dma_sync_sg_for_cpu(e1, e2, e3, e4) > + dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4) > > @@ > expression e1, e2, e3, e4; > @@ > - pci_dma_sync_sg_for_device(e1, e2, e3, e4) > + dma_sync_sg_for_device(&e1->dev, e2, e3, e4) > > @@ > expression e1, e2; > @@ > - pci_dma_mapping_error(e1, e2) > + dma_mapping_error(&e1->dev, e2) > > @@ > expression e1, e2; > @@ > - pci_set_dma_mask(e1, e2) > + dma_set_mask(&e1->dev, e2) > > @@ > expression e1, e2; > @@ > - pci_set_consistent_dma_mask(e1, e2) > + dma_set_coherent_mask(&e1->dev, e2) > > Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Patch applied to wireless-drivers-next.git, thanks. ac4c323cbb91 airo: switch from 'pci_' to 'dma_' API
diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c index dd78c415d6e7..87b9398b03fd 100644 --- a/drivers/net/wireless/cisco/airo.c +++ b/drivers/net/wireless/cisco/airo.c @@ -2430,8 +2430,8 @@ void stop_airo_card(struct net_device *dev, int freeres) iounmap(ai->pcimem); if (ai->pciaux) iounmap(ai->pciaux); - pci_free_consistent(ai->pci, PCI_SHARED_LEN, - ai->shared, ai->shared_dma); + dma_free_coherent(&ai->pci->dev, PCI_SHARED_LEN, + ai->shared, ai->shared_dma); } } crypto_free_sync_skcipher(ai->tfm); @@ -2581,9 +2581,10 @@ static int mpi_map_card(struct airo_info *ai, struct pci_dev *pci) } /* Reserve PKTSIZE for each fid and 2K for the Rids */ - ai->shared = pci_alloc_consistent(pci, PCI_SHARED_LEN, &ai->shared_dma); + ai->shared = dma_alloc_coherent(&pci->dev, PCI_SHARED_LEN, + &ai->shared_dma, GFP_KERNEL); if (!ai->shared) { - airo_print_err("", "Couldn't alloc_consistent %d", + airo_print_err("", "Couldn't alloc_coherent %d", PCI_SHARED_LEN); goto free_auxmap; } @@ -2643,7 +2644,8 @@ static int mpi_map_card(struct airo_info *ai, struct pci_dev *pci) return 0; free_shared: - pci_free_consistent(pci, PCI_SHARED_LEN, ai->shared, ai->shared_dma); + dma_free_coherent(&pci->dev, PCI_SHARED_LEN, ai->shared, + ai->shared_dma); free_auxmap: iounmap(ai->pciaux); free_memmap: @@ -2930,7 +2932,8 @@ static struct net_device *_init_airo_card(unsigned short irq, int port, unregister_netdev(dev); err_out_map: if (test_bit(FLAG_MPI,&ai->flags) && pci) { - pci_free_consistent(pci, PCI_SHARED_LEN, ai->shared, ai->shared_dma); + dma_free_coherent(&pci->dev, PCI_SHARED_LEN, ai->shared, + ai->shared_dma); iounmap(ai->pciaux); iounmap(ai->pcimem); mpi_unmap_card(ai->pci);
The wrappers in include/linux/pci-dma-compat.h should go away. The patch has been generated with the coccinelle script below and has been hand modified to replace GFP_ with a correct flag. It has been compile tested. When memory is allocated in 'mpi_map_card()' GFP_KERNEL can be used because this function is called from a probe or a module_init() function and no spinlock is taken in the between. The call chains are: airo_init_module module_init function in 'airo.c' or airo_probe .probe function in 'airo_cs.c' --> airo_config followed in both cases by: --> init_airo_card --> _init_airo_card --> mpi_map_card @@ @@ - PCI_DMA_BIDIRECTIONAL + DMA_BIDIRECTIONAL @@ @@ - PCI_DMA_TODEVICE + DMA_TO_DEVICE @@ @@ - PCI_DMA_FROMDEVICE + DMA_FROM_DEVICE @@ @@ - PCI_DMA_NONE + DMA_NONE @@ expression e1, e2, e3; @@ - pci_alloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3; @@ - pci_zalloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3, e4; @@ - pci_free_consistent(e1, e2, e3, e4) + dma_free_coherent(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_single(e1, e2, e3, e4) + dma_map_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_single(e1, e2, e3, e4) + dma_unmap_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4, e5; @@ - pci_map_page(e1, e2, e3, e4, e5) + dma_map_page(&e1->dev, e2, e3, e4, e5) @@ expression e1, e2, e3, e4; @@ - pci_unmap_page(e1, e2, e3, e4) + dma_unmap_page(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_sg(e1, e2, e3, e4) + dma_map_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_sg(e1, e2, e3, e4) + dma_unmap_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_cpu(e1, e2, e3, e4) + dma_sync_single_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_device(e1, e2, e3, e4) + dma_sync_single_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_cpu(e1, e2, e3, e4) + dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_device(e1, e2, e3, e4) + dma_sync_sg_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2; @@ - pci_dma_mapping_error(e1, e2) + dma_mapping_error(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_dma_mask(e1, e2) + dma_set_mask(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_consistent_dma_mask(e1, e2) + dma_set_coherent_mask(&e1->dev, e2) Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- If needed, see post from Christoph Hellwig on the kernel-janitors ML: https://marc.info/?l=kernel-janitors&m=158745678307186&w=4 --- drivers/net/wireless/cisco/airo.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)