From: Hans de Goede Date: Mon, 16 Sep 2013 15:04:27 +0000 (+0200) Subject: xhci: Fix number of streams allocated when using streams X-Git-Tag: qemu-xen-4.5.0-rc1~467^2~5 X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=d063c3112c4cd23a479ee18720c2bd119da2d315;p=qemu-xen.git xhci: Fix number of streams allocated when using streams 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 Signed-off-by: Gerd Hoffmann --- diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c index f02231dc87..69d9144ee8 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); }