* [PATCH v2 1/8] serial: core: Fold __uart_put_char() into caller
2016-01-11 4:23 [PATCH v2 0/8] Misc serial cleanups Peter Hurley
@ 2016-01-11 4:23 ` Peter Hurley
2016-01-11 4:23 ` [PATCH v2 2/8] serial: core: Fold do_uart_get_info() " Peter Hurley
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Peter Hurley @ 2016-01-11 4:23 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: Jiri Slaby, linux-kernel, linux-serial, Peter Hurley
uart_put_char() is the required interface; manually inline
__uart_put_char().
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
drivers/tty/serial/serial_core.c | 14 +++++---------
1 file changed, 5 insertions(+), 9 deletions(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 3698ada..048b175 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -483,12 +483,15 @@ static void uart_change_speed(struct tty_struct *tty, struct uart_state *state,
spin_unlock_irq(&uport->lock);
}
-static inline int __uart_put_char(struct uart_port *port,
- struct circ_buf *circ, unsigned char c)
+static int uart_put_char(struct tty_struct *tty, unsigned char c)
{
+ struct uart_state *state = tty->driver_data;
+ struct uart_port *port = state->uart_port;
+ struct circ_buf *circ;
unsigned long flags;
int ret = 0;
+ circ = &state->xmit;
if (!circ->buf)
return 0;
@@ -502,13 +505,6 @@ static inline int __uart_put_char(struct uart_port *port,
return ret;
}
-static int uart_put_char(struct tty_struct *tty, unsigned char ch)
-{
- struct uart_state *state = tty->driver_data;
-
- return __uart_put_char(state->uart_port, &state->xmit, ch);
-}
-
static void uart_flush_chars(struct tty_struct *tty)
{
uart_start(tty);
--
2.7.0
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v2 2/8] serial: core: Fold do_uart_get_info() into caller
2016-01-11 4:23 [PATCH v2 0/8] Misc serial cleanups Peter Hurley
2016-01-11 4:23 ` [PATCH v2 1/8] serial: core: Fold __uart_put_char() into caller Peter Hurley
@ 2016-01-11 4:23 ` Peter Hurley
2016-01-11 4:23 ` [PATCH v2 3/8] serial: core: Use tty->index for port # in debug messages Peter Hurley
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Peter Hurley @ 2016-01-11 4:23 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: Jiri Slaby, linux-kernel, linux-serial, Peter Hurley
do_uart_get_info() has a single caller: uart_get_info().
Manually inline do_uart_get_info().
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
drivers/tty/serial/serial_core.c | 18 +++++++-----------
1 file changed, 7 insertions(+), 11 deletions(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 048b175..6dfb583 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -671,14 +671,18 @@ static void uart_unthrottle(struct tty_struct *tty)
uart_set_mctrl(port, TIOCM_RTS);
}
-static void do_uart_get_info(struct tty_port *port,
- struct serial_struct *retinfo)
+static void uart_get_info(struct tty_port *port, struct serial_struct *retinfo)
{
struct uart_state *state = container_of(port, struct uart_state, port);
struct uart_port *uport = state->uart_port;
memset(retinfo, 0, sizeof(*retinfo));
+ /*
+ * Ensure the state we copy is consistent and no hardware changes
+ * occur as we go
+ */
+ mutex_lock(&port->mutex);
retinfo->type = uport->type;
retinfo->line = uport->line;
retinfo->port = uport->iobase;
@@ -697,15 +701,6 @@ static void do_uart_get_info(struct tty_port *port,
retinfo->io_type = uport->iotype;
retinfo->iomem_reg_shift = uport->regshift;
retinfo->iomem_base = (void *)(unsigned long)uport->mapbase;
-}
-
-static void uart_get_info(struct tty_port *port,
- struct serial_struct *retinfo)
-{
- /* Ensure the state we copy is consistent and no hardware changes
- occur as we go */
- mutex_lock(&port->mutex);
- do_uart_get_info(port, retinfo);
mutex_unlock(&port->mutex);
}
@@ -713,6 +708,7 @@ static int uart_get_info_user(struct tty_port *port,
struct serial_struct __user *retinfo)
{
struct serial_struct tmp;
+
uart_get_info(port, &tmp);
if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
--
2.7.0
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v2 3/8] serial: core: Use tty->index for port # in debug messages
2016-01-11 4:23 [PATCH v2 0/8] Misc serial cleanups Peter Hurley
2016-01-11 4:23 ` [PATCH v2 1/8] serial: core: Fold __uart_put_char() into caller Peter Hurley
2016-01-11 4:23 ` [PATCH v2 2/8] serial: core: Fold do_uart_get_info() " Peter Hurley
@ 2016-01-11 4:23 ` Peter Hurley
2016-01-11 4:23 ` [PATCH v2 4/8] serial: Fix ASYNC_* => UPF_* flags misuse Peter Hurley
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Peter Hurley @ 2016-01-11 4:23 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: Jiri Slaby, linux-kernel, linux-serial, Peter Hurley
The uart port may have already been removed by uart_remove_one_port();
use equivalent tty->index (which is always valid in these contexts)
instead.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
drivers/tty/serial/serial_core.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 6dfb583..f8c28a7 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1381,8 +1381,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
uport = state->uart_port;
port = &state->port;
-
- pr_debug("uart_close(%d) called\n", uport ? uport->line : -1);
+ pr_debug("uart_close(%d) called\n", tty->index);
if (!port->count || tty_port_close_start(port, tty, filp) == 0)
return;
@@ -1500,7 +1499,7 @@ static void uart_hangup(struct tty_struct *tty)
struct tty_port *port = &state->port;
unsigned long flags;
- pr_debug("uart_hangup(%d)\n", state->uart_port->line);
+ pr_debug("uart_hangup(%d)\n", tty->index);
mutex_lock(&port->mutex);
if (port->flags & ASYNC_NORMAL_ACTIVE) {
--
2.7.0
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v2 4/8] serial: Fix ASYNC_* => UPF_* flags misuse
2016-01-11 4:23 [PATCH v2 0/8] Misc serial cleanups Peter Hurley
` (2 preceding siblings ...)
2016-01-11 4:23 ` [PATCH v2 3/8] serial: core: Use tty->index for port # in debug messages Peter Hurley
@ 2016-01-11 4:23 ` Peter Hurley
2016-01-11 4:23 ` [PATCH v2 5/8] serial: core: Cleanup uart_open() exit Peter Hurley
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Peter Hurley @ 2016-01-11 4:23 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: Jiri Slaby, linux-kernel, linux-serial, Peter Hurley
The UPF_* flags are the correct values to use for struct uart_port
and struct old_serial_port/SERIAL_PORT_DFNS.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
arch/alpha/include/asm/serial.h | 8 ++++----
arch/frv/include/asm/serial.h | 2 +-
arch/m68k/include/asm/serial.h | 8 ++++----
arch/mips/pmcs-msp71xx/msp_serial.c | 2 +-
arch/mn10300/include/asm/serial.h | 10 +++++-----
arch/xtensa/platforms/xt2000/setup.c | 2 +-
drivers/tty/serial/serial_ks8695.c | 2 +-
7 files changed, 17 insertions(+), 17 deletions(-)
diff --git a/arch/alpha/include/asm/serial.h b/arch/alpha/include/asm/serial.h
index 22909b8..e31557f 100644
--- a/arch/alpha/include/asm/serial.h
+++ b/arch/alpha/include/asm/serial.h
@@ -14,11 +14,11 @@
/* Standard COM flags (except for COM4, because of the 8514 problem) */
#ifdef CONFIG_SERIAL_8250_DETECT_IRQ
-#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
-#define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
+#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ)
+#define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ)
#else
-#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
-#define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
+#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST)
+#define STD_COM4_FLAGS UPF_BOOT_AUTOCONF
#endif
#define SERIAL_PORT_DFNS \
diff --git a/arch/frv/include/asm/serial.h b/arch/frv/include/asm/serial.h
index dbb8259..bce0d0d 100644
--- a/arch/frv/include/asm/serial.h
+++ b/arch/frv/include/asm/serial.h
@@ -13,6 +13,6 @@
*/
#define BASE_BAUD 0
-#define STD_COM_FLAGS ASYNC_BOOT_AUTOCONF
+#define STD_COM_FLAGS UPF_BOOT_AUTOCONF
#define SERIAL_PORT_DFNS
diff --git a/arch/m68k/include/asm/serial.h b/arch/m68k/include/asm/serial.h
index 06d0cb1..6d44970 100644
--- a/arch/m68k/include/asm/serial.h
+++ b/arch/m68k/include/asm/serial.h
@@ -18,11 +18,11 @@
/* Standard COM flags (except for COM4, because of the 8514 problem) */
#ifdef CONFIG_SERIAL_8250_DETECT_IRQ
-#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
-#define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
+#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ)
+#define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ)
#else
-#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
-#define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
+#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST)
+#define STD_COM4_FLAGS UPF_BOOT_AUTOCONF
#endif
#ifdef CONFIG_ISA
diff --git a/arch/mips/pmcs-msp71xx/msp_serial.c b/arch/mips/pmcs-msp71xx/msp_serial.c
index d304be2..8e6e8db 100644
--- a/arch/mips/pmcs-msp71xx/msp_serial.c
+++ b/arch/mips/pmcs-msp71xx/msp_serial.c
@@ -110,7 +110,7 @@ void __init msp_serial_setup(void)
up.uartclk = uartclk;
up.regshift = 2;
up.iotype = UPIO_MEM;
- up.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
+ up.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
up.type = PORT_16550A;
up.line = 0;
up.serial_out = msp_serial_out;
diff --git a/arch/mn10300/include/asm/serial.h b/arch/mn10300/include/asm/serial.h
index c199021..594ebff 100644
--- a/arch/mn10300/include/asm/serial.h
+++ b/arch/mn10300/include/asm/serial.h
@@ -14,15 +14,15 @@
/* Standard COM flags (except for COM4, because of the 8514 problem) */
#ifdef CONFIG_SERIAL_8250_DETECT_IRQ
-#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
-#define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
+#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ)
+#define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ)
#else
-#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
-#define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
+#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST)
+#define STD_COM4_FLAGS UPF_BOOT_AUTOCONF
#endif
#ifdef CONFIG_SERIAL_8250_MANY_PORTS
-#define FOURPORT_FLAGS ASYNC_FOURPORT
+#define FOURPORT_FLAGS UPF_FOURPORT
#define ACCENT_FLAGS 0
#define BOCA_FLAGS 0
#define HUB6_FLAGS 0
diff --git a/arch/xtensa/platforms/xt2000/setup.c b/arch/xtensa/platforms/xt2000/setup.c
index 8767896..5f4bd71 100644
--- a/arch/xtensa/platforms/xt2000/setup.c
+++ b/arch/xtensa/platforms/xt2000/setup.c
@@ -113,7 +113,7 @@ void platform_heartbeat(void)
}
//#define RS_TABLE_SIZE 2
-//#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF|ASYNC_SKIP_TEST)
+//#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF|UPF_SKIP_TEST)
#define _SERIAL_PORT(_base,_irq) \
{ \
diff --git a/drivers/tty/serial/serial_ks8695.c b/drivers/tty/serial/serial_ks8695.c
index b4decf8..57f1523 100644
--- a/drivers/tty/serial/serial_ks8695.c
+++ b/drivers/tty/serial/serial_ks8695.c
@@ -554,7 +554,7 @@ static struct uart_port ks8695uart_ports[SERIAL_KS8695_NR] = {
.uartclk = KS8695_CLOCK_RATE * 16,
.fifosize = 16,
.ops = &ks8695uart_pops,
- .flags = ASYNC_BOOT_AUTOCONF,
+ .flags = UPF_BOOT_AUTOCONF,
.line = 0,
}
};
--
2.7.0
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v2 5/8] serial: core: Cleanup uart_open() exit
2016-01-11 4:23 [PATCH v2 0/8] Misc serial cleanups Peter Hurley
` (3 preceding siblings ...)
2016-01-11 4:23 ` [PATCH v2 4/8] serial: Fix ASYNC_* => UPF_* flags misuse Peter Hurley
@ 2016-01-11 4:23 ` Peter Hurley
2016-01-11 4:24 ` [PATCH v2 6/8] serial: core: Remove cast from void ptr in uart_open() Peter Hurley
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Peter Hurley @ 2016-01-11 4:23 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: Jiri Slaby, linux-kernel, linux-serial, Peter Hurley
If aborting uart_open() unsuccessfully, retval is non-zero, so the
existing fall-through exit is equivalent.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
drivers/tty/serial/serial_core.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index f8c28a7..f77be14 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1622,15 +1622,12 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
/*
* If we succeeded, wait until the port is ready.
*/
+err_unlock:
mutex_unlock(&port->mutex);
if (retval == 0)
retval = tty_port_block_til_ready(port, tty, filp);
-
end:
return retval;
-err_unlock:
- mutex_unlock(&port->mutex);
- goto end;
}
static const char *uart_type(struct uart_port *port)
--
2.7.0
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v2 6/8] serial: core: Remove cast from void ptr in uart_open()
2016-01-11 4:23 [PATCH v2 0/8] Misc serial cleanups Peter Hurley
` (4 preceding siblings ...)
2016-01-11 4:23 ` [PATCH v2 5/8] serial: core: Cleanup uart_open() exit Peter Hurley
@ 2016-01-11 4:24 ` Peter Hurley
2016-01-11 4:24 ` [PATCH v2 7/8] serial: core: Unfold < 80 char lines Peter Hurley
2016-01-11 4:24 ` [PATCH v2 8/8] serial: core: Perform RTS signalling before soft flow ctrl Peter Hurley
7 siblings, 0 replies; 9+ messages in thread
From: Peter Hurley @ 2016-01-11 4:24 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: Jiri Slaby, linux-kernel, linux-serial, Peter Hurley
void * promotes to any pointer type; remove type cast.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
drivers/tty/serial/serial_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index f77be14..530b892 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1580,7 +1580,7 @@ static void uart_dtr_rts(struct tty_port *port, int onoff)
*/
static int uart_open(struct tty_struct *tty, struct file *filp)
{
- struct uart_driver *drv = (struct uart_driver *)tty->driver->driver_state;
+ struct uart_driver *drv = tty->driver->driver_state;
int retval, line = tty->index;
struct uart_state *state = drv->state + line;
struct tty_port *port = &state->port;
--
2.7.0
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v2 7/8] serial: core: Unfold < 80 char lines
2016-01-11 4:23 [PATCH v2 0/8] Misc serial cleanups Peter Hurley
` (5 preceding siblings ...)
2016-01-11 4:24 ` [PATCH v2 6/8] serial: core: Remove cast from void ptr in uart_open() Peter Hurley
@ 2016-01-11 4:24 ` Peter Hurley
2016-01-11 4:24 ` [PATCH v2 8/8] serial: core: Perform RTS signalling before soft flow ctrl Peter Hurley
7 siblings, 0 replies; 9+ messages in thread
From: Peter Hurley @ 2016-01-11 4:24 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: Jiri Slaby, linux-kernel, linux-serial, Peter Hurley
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
drivers/tty/serial/serial_core.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 530b892..3031982 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1686,17 +1686,13 @@ static void uart_line_info(struct seq_file *m, struct uart_driver *drv, int i)
seq_printf(m, " tx:%d rx:%d",
uport->icount.tx, uport->icount.rx);
if (uport->icount.frame)
- seq_printf(m, " fe:%d",
- uport->icount.frame);
+ seq_printf(m, " fe:%d", uport->icount.frame);
if (uport->icount.parity)
- seq_printf(m, " pe:%d",
- uport->icount.parity);
+ seq_printf(m, " pe:%d", uport->icount.parity);
if (uport->icount.brk)
- seq_printf(m, " brk:%d",
- uport->icount.brk);
+ seq_printf(m, " brk:%d", uport->icount.brk);
if (uport->icount.overrun)
- seq_printf(m, " oe:%d",
- uport->icount.overrun);
+ seq_printf(m, " oe:%d", uport->icount.overrun);
#define INFOBIT(bit, str) \
if (uport->mctrl & (bit)) \
@@ -1731,8 +1727,7 @@ static int uart_proc_show(struct seq_file *m, void *v)
struct uart_driver *drv = ttydrv->driver_state;
int i;
- seq_printf(m, "serinfo:1.0 driver%s%s revision:%s\n",
- "", "", "");
+ seq_printf(m, "serinfo:1.0 driver%s%s revision:%s\n", "", "", "");
for (i = 0; i < drv->nr; i++)
uart_line_info(m, drv, i);
return 0;
--
2.7.0
^ permalink raw reply related [flat|nested] 9+ messages in thread* [PATCH v2 8/8] serial: core: Perform RTS signalling before soft flow ctrl
2016-01-11 4:23 [PATCH v2 0/8] Misc serial cleanups Peter Hurley
` (6 preceding siblings ...)
2016-01-11 4:24 ` [PATCH v2 7/8] serial: core: Unfold < 80 char lines Peter Hurley
@ 2016-01-11 4:24 ` Peter Hurley
7 siblings, 0 replies; 9+ messages in thread
From: Peter Hurley @ 2016-01-11 4:24 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: Jiri Slaby, linux-kernel, linux-serial, Peter Hurley
When throttling, time is of the essence; try RTS signalling before
soft flow control, which will take longer.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
drivers/tty/serial/serial_core.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 3031982..0baa231 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -641,11 +641,11 @@ static void uart_throttle(struct tty_struct *tty)
mask &= ~port->status;
}
- if (mask & UPSTAT_AUTOXOFF)
- uart_send_xchar(tty, STOP_CHAR(tty));
-
if (mask & UPSTAT_AUTORTS)
uart_clear_mctrl(port, TIOCM_RTS);
+
+ if (mask & UPSTAT_AUTOXOFF)
+ uart_send_xchar(tty, STOP_CHAR(tty));
}
static void uart_unthrottle(struct tty_struct *tty)
@@ -664,11 +664,11 @@ static void uart_unthrottle(struct tty_struct *tty)
mask &= ~port->status;
}
- if (mask & UPSTAT_AUTOXOFF)
- uart_send_xchar(tty, START_CHAR(tty));
-
if (mask & UPSTAT_AUTORTS)
uart_set_mctrl(port, TIOCM_RTS);
+
+ if (mask & UPSTAT_AUTOXOFF)
+ uart_send_xchar(tty, START_CHAR(tty));
}
static void uart_get_info(struct tty_port *port, struct serial_struct *retinfo)
--
2.7.0
^ permalink raw reply related [flat|nested] 9+ messages in thread