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Read the previous descriptor pointer before freeing transfer and transfer descriptors.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42701 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Jérôme Duval
2011-08-30 20:46:07 +00:00
parent 5da635640e
commit f7ca82dc00
1 changed files with 3 additions and 1 deletions
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src/add-ons/kernel/busses/usb/ehci.cpp
+3 -1
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@@ -1758,6 +1758,8 @@ EHCI::FinishIsochronousTransfers()
transfer->transfer->Finished(B_OK, actualLength); transfer->transfer->Finished(B_OK, actualLength);
itd = itd->prev;
for (uint32 i = 0; i <= transfer->last_to_process; i++) for (uint32 i = 0; i <= transfer->last_to_process; i++)
FreeDescriptor(transfer->descriptors[i]); FreeDescriptor(transfer->descriptors[i]);
@@ -1771,8 +1773,8 @@ EHCI::FinishIsochronousTransfers()
transferDone = true; transferDone = true;
} else { } else {
TRACE("FinishIsochronousTransfers not end of transfer\n"); TRACE("FinishIsochronousTransfers not end of transfer\n");
itd = itd->prev;
} }
itd = itd->prev;
} }
UnlockIsochronous(); UnlockIsochronous();