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由 Peter Hurley 提交于
Three UART drivers (8250, atmel & amba-pl010) directly call their enable_ms() method; the uart port lock must be acquired before any h/w programming. Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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