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-rw-r--r--drivers/tty/serial/8250/8250_mtk.c16
-rw-r--r--drivers/tty/serial/kgdboc.c4
-rw-r--r--drivers/tty/serial/suncore.c1
-rw-r--r--drivers/tty/tty_io.c11
-rw-r--r--drivers/tty/tty_port.c3
5 files changed, 21 insertions, 14 deletions
diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index dd5e1cede2b5..c3f933d10295 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -213,17 +213,17 @@ static int mtk8250_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, data);
- pm_runtime_enable(&pdev->dev);
- if (!pm_runtime_enabled(&pdev->dev)) {
- err = mtk8250_runtime_resume(&pdev->dev);
- if (err)
- return err;
- }
+ err = mtk8250_runtime_resume(&pdev->dev);
+ if (err)
+ return err;
data->line = serial8250_register_8250_port(&uart);
if (data->line < 0)
return data->line;
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
return 0;
}
@@ -234,13 +234,11 @@ static int mtk8250_remove(struct platform_device *pdev)
pm_runtime_get_sync(&pdev->dev);
serial8250_unregister_port(data->line);
+ mtk8250_runtime_suspend(&pdev->dev);
pm_runtime_disable(&pdev->dev);
pm_runtime_put_noidle(&pdev->dev);
- if (!pm_runtime_status_suspended(&pdev->dev))
- mtk8250_runtime_suspend(&pdev->dev);
-
return 0;
}
diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c
index baeeeaec3f03..6fb312e7af71 100644
--- a/drivers/tty/serial/kgdboc.c
+++ b/drivers/tty/serial/kgdboc.c
@@ -233,7 +233,7 @@ static void kgdboc_put_char(u8 chr)
static int param_set_kgdboc_var(const char *kmessage,
const struct kernel_param *kp)
{
- int len = strlen(kmessage);
+ size_t len = strlen(kmessage);
if (len >= MAX_CONFIG_LEN) {
pr_err("config string too long\n");
@@ -254,7 +254,7 @@ static int param_set_kgdboc_var(const char *kmessage,
strcpy(config, kmessage);
/* Chop out \n char as a result of echo */
- if (config[len - 1] == '\n')
+ if (len && config[len - 1] == '\n')
config[len - 1] = '\0';
if (configured == 1)
diff --git a/drivers/tty/serial/suncore.c b/drivers/tty/serial/suncore.c
index 70a4ea4eaa6e..990376576970 100644
--- a/drivers/tty/serial/suncore.c
+++ b/drivers/tty/serial/suncore.c
@@ -112,6 +112,7 @@ void sunserial_console_termios(struct console *con, struct device_node *uart_dp)
mode = of_get_property(dp, mode_prop, NULL);
if (!mode)
mode = "9600,8,n,1,-";
+ of_node_put(dp);
}
cflag = CREAD | HUPCL | CLOCAL;
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index ee80dfbd5442..687250ec8032 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -1373,7 +1373,13 @@ err_release_lock:
return ERR_PTR(retval);
}
-static void tty_free_termios(struct tty_struct *tty)
+/**
+ * tty_save_termios() - save tty termios data in driver table
+ * @tty: tty whose termios data to save
+ *
+ * Locking: Caller guarantees serialisation with tty_init_termios().
+ */
+void tty_save_termios(struct tty_struct *tty)
{
struct ktermios *tp;
int idx = tty->index;
@@ -1392,6 +1398,7 @@ static void tty_free_termios(struct tty_struct *tty)
}
*tp = tty->termios;
}
+EXPORT_SYMBOL_GPL(tty_save_termios);
/**
* tty_flush_works - flush all works of a tty/pty pair
@@ -1491,7 +1498,7 @@ static void release_tty(struct tty_struct *tty, int idx)
WARN_ON(!mutex_is_locked(&tty_mutex));
if (tty->ops->shutdown)
tty->ops->shutdown(tty);
- tty_free_termios(tty);
+ tty_save_termios(tty);
tty_driver_remove_tty(tty->driver, tty);
tty->port->itty = NULL;
if (tty->link)
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index cb6075096a5b..044c3cbdcfa4 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -633,7 +633,8 @@ void tty_port_close(struct tty_port *port, struct tty_struct *tty,
if (tty_port_close_start(port, tty, filp) == 0)
return;
tty_port_shutdown(port, tty);
- set_bit(TTY_IO_ERROR, &tty->flags);
+ if (!port->console)
+ set_bit(TTY_IO_ERROR, &tty->flags);
tty_port_close_end(port, tty);
tty_port_tty_set(port, NULL);
}