1PCI_CFG_ACCESS_LOCK(9)        Hardware Interfaces       PCI_CFG_ACCESS_LOCK(9)
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NAME

6       pci_cfg_access_lock - Lock PCI config reads/writes
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SYNOPSIS

9       void pci_cfg_access_lock(struct pci_dev * dev);
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ARGUMENTS

12       dev
13           pci device struct
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DESCRIPTION

16       When access is locked, any userspace reads or writes to config space
17       and concurrent lock requests will sleep until access is allowed via
18       pci_cfg_access_unlocked again.
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21Kernel Hackers Manual 3.10         June 2019            PCI_CFG_ACCESS_LOCK(9)
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