linux-kernel - [ 106/135] xhci: Fix a logical vs bitwise AND bug

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Date:	Mon, 17 Sep 2012 01:38:11 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Dan Carpenter <dan.carpenter@...cle.com>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Subject: [ 106/135] xhci: Fix a logical vs bitwise AND bug

3.2-stable review patch.  If anyone has any objections, please let me know.

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

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 052c7f9ffb0e95843e75448d02664459253f9ff8 upstream.

The intent was to test whether the flag was set.

This patch should be backported to stable kernels as old as 3.0, since
it fixes a bug in commit e95829f474f0db3a4d940cae1423783edd966027 "xhci:
Switch PPT ports to EHCI on shutdown.", which was marked for stable.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/usb/host/xhci.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index c59d5b5..617b0a7 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -659,7 +659,7 @@ void xhci_shutdown(struct usb_hcd *hcd)
 {
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 
-	if (xhci->quirks && XHCI_SPURIOUS_REBOOT)
+	if (xhci->quirks & XHCI_SPURIOUS_REBOOT)
 		usb_disable_xhci_ports(to_pci_dev(hcd->self.controller));
 
 	spin_lock_irq(&xhci->lock);


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