Hi,
İ am using İMX6Q, i am trying to make 32 MSI interrupt by using
ret = pci_alloc_irq_vectors(dev, 1, 32, PCI_IRQ_MSI);
ret is returned as 16. But i am expecting 32 as kernel documantation (The MSI Driver Guide HOWTO) suggests
"If a device supports both MSI-X and MSI capabilities, this API will use the
MSI-X facilities in preference to the MSI facilities. MSI-X supports any
number of interrupts between 1 and 2048. In contrast, MSI is restricted to
a maximum of 32 interrupts (and must be a power of two)."
What could be go wrong? or is max number of MSI is 16?
