From ce300008023fc4ddb561c48bf7e157c8e6279f46 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Fri, 24 Jan 2014 09:51:06 -0700 Subject: [PATCH] PCI: Remove unnecessary list_empty(&pci_pme_list) check list_for_each_entry() handles empty lists just fine, so there's no need to check whether the list is empty first. No functional change. Signed-off-by: Bjorn Helgaas Acked-by: Rafael J. Wysocki --- drivers/pci/pci.c | 40 +++++++++++++++++++--------------------- 1 file changed, 19 insertions(+), 21 deletions(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 1febe90831b4..52e10e1181d0 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1611,29 +1611,27 @@ static void pci_pme_list_scan(struct work_struct *work) struct pci_pme_device *pme_dev, *n; mutex_lock(&pci_pme_list_mutex); - if (!list_empty(&pci_pme_list)) { - list_for_each_entry_safe(pme_dev, n, &pci_pme_list, list) { - if (pme_dev->dev->pme_poll) { - struct pci_dev *bridge; - - bridge = pme_dev->dev->bus->self; - /* - * If bridge is in low power state, the - * configuration space of subordinate devices - * may be not accessible - */ - if (bridge && bridge->current_state != PCI_D0) - continue; - pci_pme_wakeup(pme_dev->dev, NULL); - } else { - list_del(&pme_dev->list); - kfree(pme_dev); - } + list_for_each_entry_safe(pme_dev, n, &pci_pme_list, list) { + if (pme_dev->dev->pme_poll) { + struct pci_dev *bridge; + + bridge = pme_dev->dev->bus->self; + /* + * If bridge is in low power state, the + * configuration space of subordinate devices + * may be not accessible + */ + if (bridge && bridge->current_state != PCI_D0) + continue; + pci_pme_wakeup(pme_dev->dev, NULL); + } else { + list_del(&pme_dev->list); + kfree(pme_dev); } - if (!list_empty(&pci_pme_list)) - schedule_delayed_work(&pci_pme_work, - msecs_to_jiffies(PME_TIMEOUT)); } + if (!list_empty(&pci_pme_list)) + schedule_delayed_work(&pci_pme_work, + msecs_to_jiffies(PME_TIMEOUT)); mutex_unlock(&pci_pme_list_mutex); } -- 2.20.1