Changeset 831aa466 in mainline for uspace/drv/bus/usb/xhci/endpoint.c

Timestamp:

2018-06-26T23:16:12Z (6 years ago)

Author:

Jiří Zárevúcky <jiri.zarevucky@…>

Branches:

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

Children:

2fc9bfd

Parents:

70fae4e

git-author:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-06-26 23:06:11)

git-committer:

Jiří Zárevúcky <jiri.zarevucky@…> (2018-06-26 23:16:12)

Message:

Fix cases of undefined behavior found by ubsan.

File:

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

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

@@ -102 +102 @@
         if (dev->speed >= USB_SPEED_HIGH ||
             ep->transfer_type != USB_TRANSFER_INTERRUPT) {
-                xhci_ep->interval = 1 << (xhci_ep->interval - 1);
+
+                if (xhci_ep->interval > 0)
+                        xhci_ep->interval = 1 << (xhci_ep->interval - 1);
         }