USB: xHCI: re-initialize cmd_completion

commit 1d68064a7d80da4a7334cab0356162e36229c1a1 upstream.

When a signal interrupts a Configure Endpoint command, the cmd_completion used
in xhci_configure_endpoint() is not re-initialized and the
wait_for_completion_interruptible_timeout() will return failure. Initialize
cmd_completion in xhci_configure_endpoint().

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

diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c
index 932f9993848175e476244fd23fa90303cc6b7d61..9974f32beeeebd57ca1976a9c637a30287e3c4e4 100644 (file)
--- a/drivers/usb/host/xhci-hcd.c
+++ b/drivers/usb/host/xhci-hcd.c
@@ -1157,6 +1157,7 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci,
                cmd_completion = &virt_dev->cmd_completion;
                cmd_status = &virt_dev->cmd_status;
        }
+       init_completion(cmd_completion);
 
        if (!ctx_change)
                ret = xhci_queue_configure_endpoint(xhci, in_ctx->dma,