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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-06-29 10:42:38 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-06-29 10:42:38 +0200 |
| commit | c5f4644e6c8ba21666128603e4e92544d3cd740d (patch) | |
| tree | 1a8b4c730ca575d4b1118af174b070764803fb2c /drivers/serial/sunsu.c | |
| parent | Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 (diff) | |
| download | linux-c5f4644e6c8ba21666128603e4e92544d3cd740d.tar.xz linux-c5f4644e6c8ba21666128603e4e92544d3cd740d.zip | |
[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 ddc97c905e14..d57a3553aea3 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) |