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 <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Hans de Goede
2013-09-19 11:28:40 +02:00
committed by Gerd Hoffmann
parent b5613fdcb0
commit d063c3112c
+1 -1
View File
@@ -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);
}