1PCI_ENABLE_OBFF(9)            Hardware Interfaces           PCI_ENABLE_OBFF(9)
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NAME

6       pci_enable_obff - enable optimized buffer flush/fill
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SYNOPSIS

9       int pci_enable_obff(struct pci_dev * dev,
10                           enum pci_obff_signal_type type);
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ARGUMENTS

13       dev
14           PCI device
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16       type
17           type of signaling to use
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DESCRIPTION

20       Try to enable type OBFF signaling on dev. It will try using WAKE#
21       signaling if possible, falling back to message signaling only if WAKE#
22       isn´t supported.  type should indicate whether the PCIe link be brought
23       out of L0s or L1 to send the message. It should be either
24       PCI_EXP_OBFF_SIGNAL_ALWAYS or PCI_OBFF_SIGNAL_L0.
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26       If your device can benefit from receiving all messages, even at the
27       power cost of bringing the link back up from a low power state, use
28       PCI_EXP_OBFF_SIGNAL_ALWAYS. Otherwise, use PCI_OBFF_SIGNAL_L0 (the
29       preferred type).
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RETURNS

32       Zero on success, appropriate error number on failure.
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35Kernel Hackers Manual 2.6.         June 2019                PCI_ENABLE_OBFF(9)
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