linux-kernel - [ 43/48] usb: chipidea: fix id change handling

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Date:	Tue, 18 Jun 2013 09:18:09 -0700
From:	Greg Kroah-Hartman <greg@...ah.com>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: [ 43/48] usb: chipidea: fix id change handling

From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

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

From: Alexander Shishkin <alexander.shishkin@...ux.intel.com>

commit 0c3f3dc68bb6e6950e8cd7851e7778c550e8dfb4 upstream.

Re-enable chipidea irq even if there's no role changing to do. This is
a problem since b183c19f ("USB: chipidea: re-order irq handling to avoid
unhandled irqs"); when it manifests, chipidea irq gets disabled for good.

Signed-off-by: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/chipidea/core.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -279,8 +279,9 @@ static void ci_role_work(struct work_str
 
 		ci_role_stop(ci);
 		ci_role_start(ci, role);
-		enable_irq(ci->irq);
 	}
+
+	enable_irq(ci->irq);
 }
 
 static ssize_t show_role(struct device *dev, struct device_attribute *attr,


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