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DM USB: xHCI: Fix XHCI_GET_SLOT value check issue

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Fix XHCI_GET_SLOT macro check slot valid function, when the
slot value is bigger than XHCI_MAX_SLOT set the slot value
to zero.

Tracked-On: #4711
Signed-off-by: Long Liu <long.liu@intel.com>
Reviewed-by: Yuan Liu <yuan1.liu@intel.com>
This commit is contained in:
Long Liu 2020-06-09 09:37:12 +08:00 committed by wenlingz
parent 1e3c64f52e
commit e3fe3da273
1 changed files with 3 additions and 2 deletions
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5
devicemodel/hw/pci/xhci.c
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@ -2523,9 +2523,10 @@ done:
return cmderr;
}
#define XHCI_GET_SLOT(xdev, trb, slot, cmderr) \
#define XHCI_GET_SLOT(xdev, trb, slot, cmderr) \
do { \
slot = (XHCI_TRB_3_SLOT_GET(trb->dwTrb3)) ? 0 : \
slot = (XHCI_TRB_3_SLOT_GET(trb->dwTrb3) > \
XHCI_MAX_SLOTS) ? 0 : \
XHCI_TRB_3_SLOT_GET(trb->dwTrb3); \
if (!slot) \
cmderr = XHCI_TRB_ERROR_INVALID; \