serial: samsung: protect NULL dereference of clock name
authorKeyYoung Park <keyyoung.park@samsung.com>
Wed, 30 May 2012 08:29:55 +0000 (17:29 +0900)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 12 Jun 2012 22:32:18 +0000 (15:32 -0700)
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>

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