diff options
Diffstat (limited to 'meta-agl-devel/meta-agl-jailhouse/recipes-kernel/linux/linux/0023-ivshmem-net-Switch-to-pci_alloc_irq_vectors.patch')
| -rw-r--r-- | meta-agl-devel/meta-agl-jailhouse/recipes-kernel/linux/linux/0023-ivshmem-net-Switch-to-pci_alloc_irq_vectors.patch | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/meta-agl-devel/meta-agl-jailhouse/recipes-kernel/linux/linux/0023-ivshmem-net-Switch-to-pci_alloc_irq_vectors.patch b/meta-agl-devel/meta-agl-jailhouse/recipes-kernel/linux/linux/0023-ivshmem-net-Switch-to-pci_alloc_irq_vectors.patch new file mode 100644 index 00000000..fcc2cac3 --- /dev/null +++ b/meta-agl-devel/meta-agl-jailhouse/recipes-kernel/linux/linux/0023-ivshmem-net-Switch-to-pci_alloc_irq_vectors.patch @@ -0,0 +1,146 @@ +From 77920ddb91fa49f7085875d29dd2a2c7e783af3a Mon Sep 17 00:00:00 2001 +From: Jan Kiszka <jan.kiszka@siemens.com> +Date: Tue, 23 May 2017 17:41:00 +0200 +Subject: [PATCH 23/32] ivshmem-net: Switch to pci_alloc_irq_vectors + +Required by 4.12, and it also simplifies our code. Needs to be folded +into the initial patch eventually. + +Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> +--- + drivers/net/ivshmem-net.c | 66 ++++++++++++++++++++--------------------------- + 1 file changed, 28 insertions(+), 38 deletions(-) + +diff --git a/drivers/net/ivshmem-net.c b/drivers/net/ivshmem-net.c +index 0e770ca293a4..fd7d78b84576 100644 +--- a/drivers/net/ivshmem-net.c ++++ b/drivers/net/ivshmem-net.c +@@ -114,8 +114,6 @@ struct ivshm_net { + u32 peer_id; + + struct pci_dev *pdev; +- struct msix_entry msix; +- bool using_msix; + }; + + static void *ivshm_net_desc_data(struct ivshm_net *in, +@@ -793,22 +791,21 @@ static int ivshm_net_probe(struct pci_dev *pdev, + struct ivshmem_regs __iomem *regs; + resource_size_t shmaddr; + resource_size_t shmlen; +- int interrupt; + char *device_name; + void *shm; + u32 ivpos; +- int err; ++ int ret; + +- err = pcim_enable_device(pdev); +- if (err) { +- dev_err(&pdev->dev, "pci_enable_device: %d\n", err); +- return err; ++ ret = pcim_enable_device(pdev); ++ if (ret) { ++ dev_err(&pdev->dev, "pci_enable_device: %d\n", ret); ++ return ret; + } + +- err = pcim_iomap_regions(pdev, BIT(0), DRV_NAME); +- if (err) { +- dev_err(&pdev->dev, "pcim_iomap_regions: %d\n", err); +- return err; ++ ret = pcim_iomap_regions(pdev, BIT(0), DRV_NAME); ++ if (ret) { ++ dev_err(&pdev->dev, "pcim_iomap_regions: %d\n", ret); ++ return ret; + } + + regs = pcim_iomap_table(pdev)[0]; +@@ -869,8 +866,8 @@ static int ivshm_net_probe(struct pci_dev *pdev, + spin_lock_init(&in->tx_free_lock); + spin_lock_init(&in->tx_clean_lock); + +- err = ivshm_net_calc_qsize(ndev); +- if (err) ++ ret = ivshm_net_calc_qsize(ndev); ++ if (ret) + goto err_free; + + in->state_wq = alloc_ordered_workqueue(device_name, 0); +@@ -889,25 +886,21 @@ static int ivshm_net_probe(struct pci_dev *pdev, + netif_carrier_off(ndev); + netif_napi_add(ndev, &in->napi, ivshm_net_poll, NAPI_POLL_WEIGHT); + +- err = register_netdev(ndev); +- if (err) ++ ret = register_netdev(ndev); ++ if (ret) + goto err_wq; + +- err = pci_enable_msix(pdev, &in->msix, 1); +- if (!err) { +- interrupt = in->msix.vector; +- in->using_msix = true; +- } else { +- interrupt = pdev->irq; +- in->using_msix = false; +- } ++ ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_LEGACY | PCI_IRQ_MSIX); ++ if (ret < 0) ++ goto err_alloc_irq; + +- err = request_irq(interrupt, ivshm_net_int, 0, device_name, ndev); +- if (err) +- goto err_int; ++ ret = request_irq(pci_irq_vector(pdev, 0), ivshm_net_int, 0, ++ device_name, ndev); ++ if (ret) ++ goto err_request_irq; + + pci_set_master(pdev); +- if (!in->using_msix) ++ if (!pdev->msix_enabled) + writel(IVSHMEM_INTX_ENABLE, &in->ivshm_regs->intxctrl); + + writel(IVSHM_NET_STATE_RESET, &in->ivshm_regs->lstate); +@@ -915,16 +908,16 @@ static int ivshm_net_probe(struct pci_dev *pdev, + + return 0; + +-err_int: +- if (in->using_msix) +- pci_disable_msix(pdev); ++err_request_irq: ++ pci_free_irq_vectors(pdev); ++err_alloc_irq: + unregister_netdev(ndev); + err_wq: + destroy_workqueue(in->state_wq); + err_free: + free_netdev(ndev); + +- return err; ++ return ret; + } + + static void ivshm_net_remove(struct pci_dev *pdev) +@@ -934,13 +927,10 @@ static void ivshm_net_remove(struct pci_dev *pdev) + + writel(IVSHM_NET_STATE_RESET, &in->ivshm_regs->lstate); + +- if (in->using_msix) { +- free_irq(in->msix.vector, ndev); +- pci_disable_msix(pdev); +- } else { ++ if (!pdev->msix_enabled) + writel(0, &in->ivshm_regs->intxctrl); +- free_irq(pdev->irq, ndev); +- } ++ free_irq(pci_irq_vector(pdev, 0), ndev); ++ pci_free_irq_vectors(pdev); + + unregister_netdev(ndev); + cancel_work_sync(&in->state_work); +-- +2.11.0 + |