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tty: serial: vt8500: fix return value check in vt8500_serial_probe()
authorWei Yongjun <yongjun_wei@trendmicro.com.cn>
Sun, 2 Dec 2012 10:10:44 +0000 (05:10 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 16 Jan 2013 03:06:42 +0000 (19:06 -0800)
In case of error, function of_clk_get() returns ERR_PTR()
and never returns NULL. The NULL test in the return value
check should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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