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| author | Geliang Tang <geliangtang@163.com> | 2016-01-22 15:50:19 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-02-04 23:03:53 +0100 |
| commit | 0e6053dc6e7a42c8ba9ce6e81adb3350c7df4bc8 (patch) | |
| tree | c7f492c0ee6ad434231f524176a9ee33b0678563 /drivers/pci/pcie | |
| parent | PCI/AER: Restore pci_ops pointer while calling original pci_ops (diff) | |
| download | linux-0e6053dc6e7a42c8ba9ce6e81adb3350c7df4bc8.tar.xz linux-0e6053dc6e7a42c8ba9ce6e81adb3350c7df4bc8.zip | |
PCI/AER: Use list_first_entry_or_null() to simplify code
Use list_first_entry_or_null() instead of list_empty() + list_entry() to
simplify the code.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pcie')
| -rw-r--r-- | drivers/pci/pcie/aer/aer_inject.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer/aer_inject.c index 79a5e112711a..e2760a39a98a 100644 --- a/drivers/pci/pcie/aer/aer_inject.c +++ b/drivers/pci/pcie/aer/aer_inject.c @@ -124,16 +124,13 @@ static struct pci_ops *__find_pci_bus_ops(struct pci_bus *bus) static struct pci_bus_ops *pci_bus_ops_pop(void) { unsigned long flags; - struct pci_bus_ops *bus_ops = NULL; + struct pci_bus_ops *bus_ops; spin_lock_irqsave(&inject_lock, flags); - if (list_empty(&pci_bus_ops_list)) - bus_ops = NULL; - else { - struct list_head *lh = pci_bus_ops_list.next; - list_del(lh); - bus_ops = list_entry(lh, struct pci_bus_ops, list); - } + bus_ops = list_first_entry_or_null(&pci_bus_ops_list, + struct pci_bus_ops, list); + if (bus_ops) + list_del(&bus_ops->list); spin_unlock_irqrestore(&inject_lock, flags); return bus_ops; } |