PCI_REQUEST_REGIONS_(9) Hardware Interfaces PCI_REQUEST_REGIONS_(9)NAMEpci_request_regions_exclusive - Reserved PCI I/O and memory resources
SYNOPSIS
int pci_request_regions_exclusive(struct pci_dev * pdev,
const char * res_name);
ARGUMENTS
pdev
PCI device whose resources are to be reserved
res_name
Name to be associated with resource.
DESCRIPTION
Mark all PCI regions associated with PCI device pdev as being reserved
by owner res_name. Do not access any address inside the PCI regions
unless this call returns successfully.
pci_request_regions_exclusive will mark the region so that /dev/mem and
the sysfs MMIO access will not be allowed.
Returns 0 on success, or EBUSY on error. A warning message is also
printed on failure.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 PCI_REQUEST_REGIONS_(9)