USB: xhci: Allow allocation of commands without input contexts.

The xhci_command structure is the basic structure for issuing commands to
the xHCI hardware.  It contains a struct completion (so that the issuing
function can wait on the command), command status, and a input context
that is used to pass information to the hardware.  Not all commands need
the input context, so make it optional to allocate.  Allow
xhci_free_container_ctx() to be passed a NULL input context, to make
freeing the xhci_command structure simple.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c
index 451f53eec6d7..17f1caf2af64 100644
--- a/drivers/usb/host/xhci-hcd.c
+++ b/drivers/usb/host/xhci-hcd.c
@@ -1679,7 +1679,7 @@ int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
                 xhci_warn(xhci, "Cannot update hub desc for unknown device.\n");
                 return -EINVAL;
         }
-        config_cmd = xhci_alloc_command(xhci, true, mem_flags);
+        config_cmd = xhci_alloc_command(xhci, true, true, mem_flags);
         if (!config_cmd) {
                 xhci_dbg(xhci, "Could not allocate xHCI command structure.\n");
                 return -ENOMEM;