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| author | Peter Hurley <peter@hurleysoftware.com> | 2016-04-09 17:53:21 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-30 09:26:55 -0700 |
| commit | 5604a98e2f95d6221852960a3363588f40d78e22 (patch) | |
| tree | d9573557cf616e8751fbde45ee56d8280e3eebcf /drivers/tty/mxser.c | |
| parent | e4d38f334ad24f80229a8ebab26950de8e8f34d7 (diff) | |
| download | lwn-5604a98e2f95d6221852960a3363588f40d78e22.tar.gz lwn-5604a98e2f95d6221852960a3363588f40d78e22.zip | |
tty: Replace ASYNC_CTS_FLOW bit and update atomically
Replace ASYNC_CTS_FLOW bit in the tty_port::flags field with
TTY_PORT_CTS_FLOW bit in the tty_port::iflags field. Add
tty_port_set_cts_flow() helper to abstract the atomic bit ops.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/mxser.c')
| -rw-r--r-- | drivers/tty/mxser.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index f23c2a101688..8f3fdad37ac7 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -711,8 +711,8 @@ static int mxser_change_speed(struct tty_struct *tty, /* CTS flow control flag and modem status interrupts */ info->IER &= ~UART_IER_MSI; info->MCR &= ~UART_MCR_AFE; + tty_port_set_cts_flow(&info->port, cflag & CRTSCTS); if (cflag & CRTSCTS) { - info->port.flags |= ASYNC_CTS_FLOW; info->IER |= UART_IER_MSI; if ((info->type == PORT_16550A) || (info->board->chip_flag)) { info->MCR |= UART_MCR_AFE; @@ -744,8 +744,6 @@ static int mxser_change_speed(struct tty_struct *tty, } } } - } else { - info->port.flags &= ~ASYNC_CTS_FLOW; } outb(info->MCR, info->ioaddr + UART_MCR); if (cflag & CLOCAL) { |