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mcb: Acquire reference to device in probe 

mcb_probe() does not aqcuire a reference to the probed device but drops one
when removing the device. As it is actually using the device, it should grab
a reference via get_device().

This could lead to a panic found with a rmmod/modprobe stress test

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reported-by: Andreas Werner <andreas.werner@men.de>
Tested-by: Andreas Werner <andreas.werner@men.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Johannes Thumshirn 2016-05-10 12:39:44 +02:00 committed by Greg Kroah-Hartman
parent 69f1804a9a
commit 7bc364097a
1 changed files with 1 additions and 0 deletions
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drivers/mcb/mcb-core.c
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@ -66,6 +66,7 @@ static int mcb_probe(struct device *dev)
if (!found_id)
return -ENODEV;
get_device(dev);
return mdrv->probe(mdev, found_id);
}