From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from szxga02-in.huawei.com ([119.145.14.65]:58828 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751039AbbESDpP (ORCPT ); Mon, 18 May 2015 23:45:15 -0400 From: Yijing Wang To: CC: , , , , Yijing Wang Subject: [PATCH] PCI/ASPM: Remove redundant checking for pcie port type Date: Tue, 19 May 2015 11:41:34 +0800 Message-ID: <1432006894-12203-1-git-send-email-wangyijing@huawei.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-pci-owner@vger.kernel.org List-ID: Only pcie root port or downstream port would allocate a pcie_link_state when call alloc_pcie_link_state() in pcie_aspm_init_link_state(). So when call another ASPM functions to configure pcie_link_state, checking pdev->link_state is enough, it's no need to check pcie port type again in these functions. Signed-off-by: Yijing Wang --- drivers/pci/pcie/aspm.c | 19 ++++--------------- 1 files changed, 4 insertions(+), 15 deletions(-) diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index 8830740..16a1ffb 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -675,10 +675,7 @@ void pcie_aspm_pm_state_change(struct pci_dev *pdev) { struct pcie_link_state *link = pdev->link_state; - if (aspm_disabled || !pci_is_pcie(pdev) || !link) - return; - if ((pci_pcie_type(pdev) != PCI_EXP_TYPE_ROOT_PORT) && - (pci_pcie_type(pdev) != PCI_EXP_TYPE_DOWNSTREAM)) + if (aspm_disabled || !link) return; /* * Devices changed PM state, we should recheck if latency @@ -696,16 +693,12 @@ void pcie_aspm_powersave_config_link(struct pci_dev *pdev) { struct pcie_link_state *link = pdev->link_state; - if (aspm_disabled || !pci_is_pcie(pdev) || !link) + if (aspm_disabled || !link) return; if (aspm_policy != POLICY_POWERSAVE) return; - if ((pci_pcie_type(pdev) != PCI_EXP_TYPE_ROOT_PORT) && - (pci_pcie_type(pdev) != PCI_EXP_TYPE_DOWNSTREAM)) - return; - down_read(&pci_bus_sem); mutex_lock(&aspm_lock); pcie_config_aspm_path(link); @@ -906,9 +899,7 @@ void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev) { struct pcie_link_state *link_state = pdev->link_state; - if (!pci_is_pcie(pdev) || - (pci_pcie_type(pdev) != PCI_EXP_TYPE_ROOT_PORT && - pci_pcie_type(pdev) != PCI_EXP_TYPE_DOWNSTREAM) || !link_state) + if (!link_state) return; if (link_state->aspm_support) @@ -923,9 +914,7 @@ void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev) { struct pcie_link_state *link_state = pdev->link_state; - if (!pci_is_pcie(pdev) || - (pci_pcie_type(pdev) != PCI_EXP_TYPE_ROOT_PORT && - pci_pcie_type(pdev) != PCI_EXP_TYPE_DOWNSTREAM) || !link_state) + if (!link_state) return; if (link_state->aspm_support) -- 1.7.1