xhci: Add an assertion to check for virt_dev=0 bug.

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During a "plug-unplug" stress test on an NEC xHCI card, a null pointer
dereference was observed.  xhci_address_device() dereferenced a null
virt_dev (possibly an erroneous udev->slot_id?); this patch adds a WARN_ON &
message to aid debug if it can be recreated.

Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>

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Matt Evans 2011-03-29 13:40:56 +11:00 • committed by Sarah Sharp

parent 92a3da410a

commit 7ed603ecf8

1 changed files with 11 additions and 0 deletions

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drivers/usb/host/xhci.c

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