linux-kernel - [067/116] USB: xHCI: re-initialize cmd

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Date:	Tue, 30 Mar 2010 15:55:45 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Andiry Xu <andiry.xu@....com>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [067/116] USB: xHCI: re-initialize cmd_completion

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Andiry Xu <andiry.xu@....com>

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

---
 drivers/usb/host/xhci-hcd.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/host/xhci-hcd.c
+++ b/drivers/usb/host/xhci-hcd.c
@@ -1157,6 +1157,7 @@ static int xhci_configure_endpoint(struc
 		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,


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