hi David: 2014-03-04 19:40 GMT+08:00 David Laight <David.Laight@xxxxxxxxxx>: > From: vichy >> hi all: >> from xhci spec, Interrupter Target is the value between 0 and MaxIntrs-1. >> But why the parameter pass to TRB_INTR_TARGTRB_INTR_TARGET is always 0. >> >> Does that mean so far xhci host didn't support multi-interrupt as >> MSI-X suggested? > > AFAIK The Linux USB stack doesn't support the locking required for > fine-grained interrupts. So only a single interrupt can be supported. > is there any special reason we don't support fine-grained interrupts? it semes PCI has support MSI-X quite long ago. Thanks for your kind reply, -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
