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authorMasahiro Yamada <yamada.masahiro@socionext.com>2015-10-30 11:39:04 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-12-13 19:59:48 -0800
commitf2bfdb0628d50339a70de475eb2be1c4c1eb9014 (patch)
treec832d7c140eaedf72ce1592a106451113e0836a1 /ipc
parent2cda227bba7e8398c6f8a7792c7f35818187dcc6 (diff)
serial: 8250_early: confirm empty transmitter after sending characters
The current code waits until the transmitter becomes empty, before sending each character, and after finishing the whole string. This seems a bit redundant. It can be more efficient by checking the transmitter only after sending each character. This should be safe because the transmitter is already empty at the first entry of serial_putc(). Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'ipc')
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