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serial: add a new helper function

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In most of the time, the driver needs to check if the cts flow control
is enabled. But now, the driver checks the ASYNC_CTS_FLOW flag manually,
which is not a grace way. So add a new wraper function to make the code
tidy and clean.

Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Huang Shijie
2012-08-22 22:13:36 -04:00
committed by Greg Kroah-Hartman
parent e5b57c037a
commit f21ec3d2d4
13 changed files with 20 additions and 14 deletions
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2
drivers/tty/synclink.c
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@@ -1359,7 +1359,7 @@ static void mgsl_isr_io_pin( struct mgsl_struct *info )
}
}
if ( (info->port.flags & ASYNC_CTS_FLOW) &&
if (tty_port_cts_enabled(&info->port) &&
(status & MISCSTATUS_CTS_LATCHED) ) {
if (info->port.tty->hw_stopped) {
if (status & MISCSTATUS_CTS) {