1PCI_MSI_VEC_COUNT(9)          Hardware Interfaces         PCI_MSI_VEC_COUNT(9)
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NAME

6       pci_msi_vec_count - Return the number of MSI vectors a device can send
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SYNOPSIS

9       int pci_msi_vec_count(struct pci_dev * dev);
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ARGUMENTS

12       dev
13           device to report about
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DESCRIPTION

16       This function returns the number of MSI vectors a device requested via
17       Multiple Message Capable register. It returns a negative errno if the
18       device is not capable sending MSI interrupts. Otherwise, the call
19       succeeds and returns a power of two, up to a maximum of 2^5 (32),
20       according to the MSI specification.
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23Kernel Hackers Manual 3.10         June 2019              PCI_MSI_VEC_COUNT(9)
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