PCI_ENABLE_MSI_BLOCK(9) Hardware Interfaces PCI_ENABLE_MSI_BLOCK(9)
NAME
pci_enable_msi_block - configure device's MSI capability structure
SYNOPSIS
int pci_enable_msi_block(struct pci_dev * dev, unsigned int nvec);
ARGUMENTS
dev
device to configure
nvec
number of interrupts to configure
DESCRIPTION
Allocate IRQs for a device with the MSI capability. This function returns a negative errno if an error occurs. If it is unable to allocate
the number of interrupts requested, it returns the number of interrupts it might be able to allocate. If it successfully allocates at least
the number of interrupts requested, it returns 0 and updates the dev's irq member to the lowest new interrupt number; the other interrupt
numbers allocated to this device are consecutive.
COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 PCI_ENABLE_MSI_BLOCK(9)
