Re: [PATCH] usb: enable pci MSI/MSIX in usb core

[Alex,Shi]

> The controller driver will need to know which of the multiple MSI-X
> interrupts has been raised:
> 
> irqreturn_t (*msix_irq)(struct usb_hcd *hcd, unsigned int nr_or_index);

Actually, hcd has 2 object for msix, msix_count and msix_entries. 

Do you mean msix_count maybe smaller than we decide in hcd_setup_msix()?
Which situation will make this? 


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