From c5f4644e6c8ba21666128603e4e92544d3cd740d Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 29 Jun 2005 09:42:38 +0100 Subject: [PATCH] Serial: Adjust serial locking This patch changes the way serial ports are locked when getting modem status. This change is necessary because we will need to atomically read the modem status and take action depending on the CTS status. Signed-off-by: Russell King --- drivers/serial/serial_txx9.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers/serial/serial_txx9.c') diff --git a/drivers/serial/serial_txx9.c b/drivers/serial/serial_txx9.c index 3f1051a..d085030 100644 --- a/drivers/serial/serial_txx9.c +++ b/drivers/serial/serial_txx9.c @@ -442,13 +442,10 @@ static unsigned int serial_txx9_tx_empty(struct uart_port *port) static unsigned int serial_txx9_get_mctrl(struct uart_port *port) { struct uart_txx9_port *up = (struct uart_txx9_port *)port; - unsigned long flags; unsigned int ret; - spin_lock_irqsave(&up->port.lock, flags); ret = ((sio_in(up, TXX9_SIFLCR) & TXX9_SIFLCR_RTSSC) ? 0 : TIOCM_RTS) | ((sio_in(up, TXX9_SICISR) & TXX9_SICISR_CTSS) ? 0 : TIOCM_CTS); - spin_unlock_irqrestore(&up->port.lock, flags); return ret; } -- cgit v1.1