diff options
| author | Mark Brown <broonie@linaro.org> | 2014-01-27 14:57:42 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-01-27 14:57:42 +0000 |
| commit | 0f3550b731084e2790caf1d73bfe0e3a454aafae (patch) | |
| tree | 96e387b7ae0da48c3ac13dd5ce922c983bc5debb /drivers/tty/serial/amba-pl011.c | |
| parent | b7e46105cae50b29ac0b08e2e3c04b5ca34bc2a5 (diff) | |
| parent | 51ad557e21b8713f3abc286c14bca4ed01b8e56d (diff) | |
Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-androidlsk-android-14.01
Diffstat (limited to 'drivers/tty/serial/amba-pl011.c')
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index e2774f9ecd59..7a55fe70434a 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -1543,6 +1543,8 @@ static int pl011_startup(struct uart_port *port) /* * Provoke TX FIFO interrupt into asserting. */ + spin_lock_irq(&uap->port.lock); + cr = UART01x_CR_UARTEN | UART011_CR_TXE | UART011_CR_LBE; writew(cr, uap->port.membase + UART011_CR); writew(0, uap->port.membase + UART011_FBRD); @@ -1567,6 +1569,8 @@ static int pl011_startup(struct uart_port *port) cr |= UART01x_CR_UARTEN | UART011_CR_RXE | UART011_CR_TXE; writew(cr, uap->port.membase + UART011_CR); + spin_unlock_irq(&uap->port.lock); + /* * initialise the old status of the modem signals */ @@ -1636,11 +1640,13 @@ static void pl011_shutdown(struct uart_port *port) * it during startup(). */ uap->autorts = false; + spin_lock_irq(&uap->port.lock); cr = readw(uap->port.membase + UART011_CR); uap->old_cr = cr; cr &= UART011_CR_RTS | UART011_CR_DTR; cr |= UART01x_CR_UARTEN | UART011_CR_TXE; writew(cr, uap->port.membase + UART011_CR); + spin_unlock_irq(&uap->port.lock); /* * disable break condition and fifos |