Changeset cb19590 in mainline

Timestamp:

2018-06-27T14:57:15Z (6 years ago)

Author:

Jiří Zárevúcky <jiri.zarevucky@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

1c9ae08

Parents:

60876fd3

git-author:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-06-27 14:56:56)

git-committer:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-06-27 14:57:15)

Message:

Better fix for USB endpoint interval. (thx aearsis)

File:

• uspace/drv/bus/usb/xhci/endpoint.c (modified) (1 diff)

uspace/drv/bus/usb/xhci/endpoint.c

@@ -103 +103 @@
             ep->transfer_type != USB_TRANSFER_INTERRUPT) {
 
-                if (xhci_ep->interval > 0)
-                        xhci_ep->interval = 1 << (xhci_ep->interval - 1);
+                // XXX: According to the spec, the interval should be
+                //      from [1, 16]. However, in QEMU, we get 0 here
+                //      (a QEMU bug?).
+                if (xhci_ep->interval == 0)
+                        xhci_ep->interval = 8;
+
+                xhci_ep->interval = 1 << (xhci_ep->interval - 1);
         }