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path: root/drivers/tty/serial
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-rw-r--r--drivers/tty/serial/clps711x.c14
-rw-r--r--drivers/tty/serial/pch_uart.c4
-rw-r--r--drivers/tty/serial/pmac_zilog.c6
3 files changed, 14 insertions, 10 deletions
diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c
index e6c3dbd781d..836fe273123 100644
--- a/drivers/tty/serial/clps711x.c
+++ b/drivers/tty/serial/clps711x.c
@@ -154,10 +154,9 @@ static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id)
port->x_char = 0;
return IRQ_HANDLED;
}
- if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
- clps711xuart_stop_tx(port);
- return IRQ_HANDLED;
- }
+
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port))
+ goto disable_tx_irq;
count = port->fifosize >> 1;
do {
@@ -171,8 +170,11 @@ static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id)
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(port);
- if (uart_circ_empty(xmit))
- clps711xuart_stop_tx(port);
+ if (uart_circ_empty(xmit)) {
+ disable_tx_irq:
+ disable_irq_nosync(TX_IRQ(port));
+ tx_enabled(port) = 0;
+ }
return IRQ_HANDLED;
}
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index bbbec4a74cf..c2816f49480 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1447,9 +1447,11 @@ static int pch_uart_verify_port(struct uart_port *port,
__func__);
return -EOPNOTSUPP;
#endif
- priv->use_dma = 1;
priv->use_dma_flag = 1;
dev_info(priv->port.dev, "PCH UART : Use DMA Mode\n");
+ if (!priv->use_dma)
+ pch_request_dma(port);
+ priv->use_dma = 1;
}
return 0;
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index 08ebe901bb5..654755a990d 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -469,7 +469,7 @@ static irqreturn_t pmz_interrupt(int irq, void *dev_id)
tty = NULL;
if (r3 & (CHAEXT | CHATxIP | CHARxIP)) {
if (!ZS_IS_OPEN(uap_a)) {
- pmz_debug("ChanA interrupt while open !\n");
+ pmz_debug("ChanA interrupt while not open !\n");
goto skip_a;
}
write_zsreg(uap_a, R0, RES_H_IUS);
@@ -493,8 +493,8 @@ static irqreturn_t pmz_interrupt(int irq, void *dev_id)
spin_lock(&uap_b->port.lock);
tty = NULL;
if (r3 & (CHBEXT | CHBTxIP | CHBRxIP)) {
- if (!ZS_IS_OPEN(uap_a)) {
- pmz_debug("ChanB interrupt while open !\n");
+ if (!ZS_IS_OPEN(uap_b)) {
+ pmz_debug("ChanB interrupt while not open !\n");
goto skip_b;
}
write_zsreg(uap_b, R0, RES_H_IUS);