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usb: xhci: remove the use of xhci->addr_dev

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xhci->addr_dev is used for the completion of both address device
and enable slot commands. It's shared by enumerations of all USB
devices connected to an xhci host. Hence, it's just a source for
possible races. Since we've introduced command structure and the
command queue to xhci driver.  It is time to get rid of addr_dev
and use the completion in the command structure instead.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lu Baolu
2016-11-11 15:13:30 +02:00
committed by Greg Kroah-Hartman
parent 228cfaea54
commit 87e44f2aac
3 changed files with 10 additions and 10 deletions
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1
drivers/usb/host/xhci.h
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@@ -1584,7 +1584,6 @@ struct xhci_hcd {
/* slot enabling and address device helpers */
/* these are not thread safe so use mutex */
struct mutex mutex;
struct completion addr_dev;
int slot_id;
/* For USB 3.0 LPM enable/disable. */
struct xhci_command *lpm_command;