linux-kernel - [PATCH] [char-misc-linus] mei: bus: Reset event

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Message-ID: <20130521165209.GB4566@zurbaran>
Date:	Tue, 21 May 2013 18:52:09 +0200
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	"Greg KH (gregkh@...uxfoundation.org)" <gregkh@...uxfoundation.org>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	"Winkler, Tomas" <tomas.winkler@...el.com>
Subject: [PATCH] [char-misc-linus] mei: bus: Reset event_cb when disabling a
 device

After cancelling all reads from the disable hook, we need to reset the
event_cb pointer as well or else we won't be able to set a new one up
when re-enabling the device.

Acked-by: Tomas Winkler <tomas.winkler@...el.com>
Signed-off-by: Samuel Ortiz <sameo@...ux.intel.com>
---
 drivers/misc/mei/bus.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 1e935ea..9ecd49a 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -496,6 +496,8 @@ int mei_cl_disable_device(struct mei_cl_device *device)
 		}
 	}
 
+	device->event_cb = NULL;
+
 	mutex_unlock(&dev->device_lock);
 
 	if (!device->ops || !device->ops->disable)
-- 
1.7.10.4

-- 
Intel Open Source Technology Centre
http://oss.intel.com/
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