KeyYoung Park 7b15e1d9e3 serial: samsung: protect NULL dereference of clock name
When priting the serial clock source, if clock source name is null,
kernel reference NULL point.

Signed-off-by: KeyYoung Park <keyyoung.park@samsung.com>
Signed-off-by: Huisung Kang <hs1218.kang@samsung.com>
Signed-off-by: Kyoungil Kim <ki0351.kim@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-06-12 15:32:18 -07:00
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