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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-06-29 09:42:38 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-06-29 09:42:38 +0100 |
| commit | c5f4644e6c8ba21666128603e4e92544d3cd740d (patch) | |
| tree | 1a8b4c730ca575d4b1118af174b070764803fb2c /drivers/serial/sunsu.c | |
| parent | a839688362e32f01608838516036697e30618b39 (diff) | |
| download | op-kernel-dev-c5f4644e6c8ba21666128603e4e92544d3cd740d.zip op-kernel-dev-c5f4644e6c8ba21666128603e4e92544d3cd740d.tar.gz | |
[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 <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/serial/sunsu.c')
| -rw-r--r-- | drivers/serial/sunsu.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c index ddc97c9..d57a355 100644 --- a/drivers/serial/sunsu.c +++ b/drivers/serial/sunsu.c @@ -572,13 +572,10 @@ static unsigned int sunsu_tx_empty(struct uart_port *port) static unsigned int sunsu_get_mctrl(struct uart_port *port) { struct uart_sunsu_port *up = (struct uart_sunsu_port *) port; - unsigned long flags; unsigned char status; unsigned int ret; - spin_lock_irqsave(&up->port.lock, flags); status = serial_in(up, UART_MSR); - spin_unlock_irqrestore(&up->port.lock, flags); ret = 0; if (status & UART_MSR_DCD) |
