Message ID | 1379343867-4285-1-git-send-email-hdegoede@redhat.com |
---|---|
State | New |
Headers | show |
On Mo, 2013-09-16 at 17:04 +0200, Hans de Goede wrote: > According to the xhci spec the total number of streams is > 2 ^ (MaxPStreams + 1), and this is also how the Linux xhci driver > uses this field. Added to usb patch queue. thanks, Gerd
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c index f02231d..69d9144 100644 --- a/hw/usb/hcd-xhci.c +++ b/hw/usb/hcd-xhci.c @@ -1138,7 +1138,7 @@ static void xhci_reset_streams(XHCIEPContext *epctx) static void xhci_alloc_streams(XHCIEPContext *epctx, dma_addr_t base) { assert(epctx->pstreams == NULL); - epctx->nr_pstreams = 2 << epctx->max_pstreams; + epctx->nr_pstreams = 2 << (epctx->max_pstreams + 1); epctx->pstreams = xhci_alloc_stream_contexts(epctx->nr_pstreams, base); }
According to the xhci spec the total number of streams is 2 ^ (MaxPStreams + 1), and this is also how the Linux xhci driver uses this field. Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- hw/usb/hcd-xhci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)