From 06f4b08179fa0590bd3a53e9af16b7197460947f Mon Sep 17 00:00:00 2001 From: Sara Sharon Date: Thu, 21 Jul 2016 15:39:29 +0300 Subject: [PATCH] iwlwifi: pcie: change indentation of iwl_pcie_set_interrupt_capa() Function is very indented. Go to msi section if needed to avoid it and by that make the code more readable. Signed-off-by: Sara Sharon Signed-off-by: Luca Coelho --- .../net/wireless/intel/iwlwifi/pcie/trans.c | 88 +++++++++---------- 1 file changed, 44 insertions(+), 44 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index d7521c1d90ec..43c3915ed352 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -1513,57 +1513,57 @@ static void iwl_pcie_set_interrupt_capa(struct pci_dev *pdev, struct iwl_trans *trans) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - int max_vector, nvec, i; + int max_irqs, num_irqs, i, ret; u16 pci_cmd; - if (trans->cfg->mq_rx_supported) { - max_vector = min_t(u32, (num_possible_cpus() + 2), - IWL_MAX_RX_HW_QUEUES); - for (i = 0; i < max_vector; i++) - trans_pcie->msix_entries[i].entry = i; - - nvec = pci_enable_msix_range(pdev, trans_pcie->msix_entries, - MSIX_MIN_INTERRUPT_VECTORS, - max_vector); - if (nvec < 0) { - IWL_DEBUG_INFO(trans, - "ret = %d failed to enable msi-x mode move to msi mode\n", - nvec); - goto msi; - } + if (!trans->cfg->mq_rx_supported) + goto enable_msi; + + max_irqs = min_t(u32, num_possible_cpus() + 2, IWL_MAX_RX_HW_QUEUES); + for (i = 0; i < max_irqs; i++) + trans_pcie->msix_entries[i].entry = i; + num_irqs = pci_enable_msix_range(pdev, trans_pcie->msix_entries, + MSIX_MIN_INTERRUPT_VECTORS, + max_irqs); + if (num_irqs < 0) { IWL_DEBUG_INFO(trans, - "Enable MSI-X allocate %d interrupt vector\n", - nvec); - trans_pcie->def_irq = (nvec == max_vector) ? nvec - 1 : 0; - /* - * In case the OS provides fewer interrupts than requested, - * different causes will share the same interrupt vector - * as follow: - * One interrupt less: non rx causes shared with FBQ. - * Two interrupts less: non rx causes shared with FBQ and RSS. - * More than two interrupts: we will use fewer RSS queues. - */ - if (nvec <= num_online_cpus()) { - trans_pcie->trans->num_rx_queues = nvec + 1; - trans_pcie->shared_vec_mask = IWL_SHARED_IRQ_NON_RX | - IWL_SHARED_IRQ_FIRST_RSS; - } else if (nvec == num_online_cpus() + 1) { - trans_pcie->trans->num_rx_queues = nvec; - trans_pcie->shared_vec_mask = IWL_SHARED_IRQ_NON_RX; - } else { - trans_pcie->trans->num_rx_queues = nvec - 1; - } + "Failed to enable msi-x mode (ret %d). Moving to msi mode.\n", + num_irqs); + goto enable_msi; + } + trans_pcie->def_irq = (num_irqs == max_irqs) ? num_irqs - 1 : 0; - trans_pcie->alloc_vecs = nvec; - trans_pcie->msix_enabled = true; - return; + IWL_DEBUG_INFO(trans, + "MSI-X enabled. %d interrupt vectors were allocated\n", + num_irqs); + + /* + * In case the OS provides fewer interrupts than requested, different + * causes will share the same interrupt vector as follows: + * One interrupt less: non rx causes shared with FBQ. + * Two interrupts less: non rx causes shared with FBQ and RSS. + * More than two interrupts: we will use fewer RSS queues. + */ + if (num_irqs <= num_online_cpus()) { + trans_pcie->trans->num_rx_queues = num_irqs + 1; + trans_pcie->shared_vec_mask = IWL_SHARED_IRQ_NON_RX | + IWL_SHARED_IRQ_FIRST_RSS; + } else if (num_irqs == num_online_cpus() + 1) { + trans_pcie->trans->num_rx_queues = num_irqs; + trans_pcie->shared_vec_mask = IWL_SHARED_IRQ_NON_RX; + } else { + trans_pcie->trans->num_rx_queues = num_irqs - 1; } -msi: - nvec = pci_enable_msi(pdev); - if (nvec) { - dev_err(&pdev->dev, "pci_enable_msi failed - %d\n", nvec); + trans_pcie->alloc_vecs = num_irqs; + trans_pcie->msix_enabled = true; + return; + +enable_msi: + ret = pci_enable_msi(pdev); + if (ret) { + dev_err(&pdev->dev, "pci_enable_msi failed - %d\n", ret); /* enable rfkill interrupt: hw bug w/a */ pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd); if (pci_cmd & PCI_COMMAND_INTX_DISABLE) { -- 2.20.1