Opening and closing consoles should be independent from setting them
active. This way it is possible to open e.g. a framebuffer console and
display text on it without showing stdout/stderr.
Signed-off-by: Bastian Stender <b...@pengutronix.de>
---
common/console.c | 19 +++++++++++++++----
drivers/video/fbconsole.c | 28 ++++++++++++++++++----------
include/console.h | 3 ++-
net/netconsole.c | 27 +++++++++++++++++----------
4 files changed, 52 insertions(+), 25 deletions(-)
diff --git a/common/console.c b/common/console.c
index 74ccfcfc3e..43890b3da8 100644
--- a/common/console.c
+++ b/common/console.c
@@ -71,10 +71,21 @@ int console_set_active(struct console_device *cdev,
unsigned flag)
if (!flag && cdev->f_active && cdev->flush)
cdev->flush(cdev);
- if (cdev->set_active) {
- ret = cdev->set_active(cdev, flag);
- if (ret)
- return ret;
+ if (flag == cdev->f_active)
+ return 0;
+
+ if (!flag) {
+ if (cdev->close) {
+ ret = cdev->close(cdev);
+ if (ret)
+ return ret;
+ }
+ } else {
+ if (cdev->open) {
+ ret = cdev->open(cdev);
+ if (ret)
+ return ret;
+ }
}
cdev->f_active = flag;
diff --git a/drivers/video/fbconsole.c b/drivers/video/fbconsole.c
index 693c21f547..64f7d7364e 100644
--- a/drivers/video/fbconsole.c
+++ b/drivers/video/fbconsole.c
@@ -365,21 +365,13 @@ static int setup_font(struct fbc_priv *priv)
return 0;
}
-static int fbc_set_active(struct console_device *cdev, unsigned flags)
+static int fbc_open(struct console_device *cdev)
{
struct fbc_priv *priv = container_of(cdev,
struct fbc_priv, cdev);
struct fb_info *fb = priv->fb;
int ret;
- if (priv->active) {
- fb_close(priv->sc);
- priv->active = false;
- }
-
- if (!(flags & (CONSOLE_STDOUT | CONSOLE_STDERR)))
- return 0;
-
ret = setup_font(priv);
if (ret)
return ret;
@@ -400,6 +392,21 @@ static int fbc_set_active(struct console_device *cdev,
unsigned flags)
return 0;
}
+static int fbc_close(struct console_device *cdev)
+{
+ struct fbc_priv *priv = container_of(cdev,
+ struct fbc_priv, cdev);
+
+ if (priv->active) {
+ fb_close(priv->sc);
+ priv->active = false;
+
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
static int set_font(struct param_d *p, void *vpriv)
{
struct fbc_priv *priv = vpriv;
@@ -434,7 +441,8 @@ int register_fbconsole(struct fb_info *fb)
cdev->getc = fbc_getc;
cdev->devname = "fbconsole";
cdev->devid = DEVICE_ID_DYNAMIC;
- cdev->set_active = fbc_set_active;
+ cdev->open = fbc_open;
+ cdev->close = fbc_close;
ret = console_register(cdev);
if (ret) {
diff --git a/include/console.h b/include/console.h
index 4b2f134a4c..53f6e47fcc 100644
--- a/include/console.h
+++ b/include/console.h
@@ -44,7 +44,8 @@ struct console_device {
int (*setbrg)(struct console_device *cdev, int baudrate);
void (*flush)(struct console_device *cdev);
int (*set_mode)(struct console_device *cdev, enum console_mode mode);
- int (*set_active)(struct console_device *cdev, unsigned active);
+ int (*open)(struct console_device *cdev);
+ int (*close)(struct console_device *cdev);
char *devname;
int devid;
diff --git a/net/netconsole.c b/net/netconsole.c
index ce3c418798..ef8b1856b6 100644
--- a/net/netconsole.c
+++ b/net/netconsole.c
@@ -105,19 +105,11 @@ static void nc_putc(struct console_device *cdev, char c)
priv->busy = 0;
}
-static int nc_set_active(struct console_device *cdev, unsigned flags)
+static int nc_open(struct console_device *cdev)
{
struct nc_priv *priv = container_of(cdev,
struct nc_priv, cdev);
- if (priv->con) {
- net_unregister(priv->con);
- priv->con = NULL;
- }
-
- if (!flags)
- return 0;
-
if (!priv->port) {
pr_err("port not set\n");
return -EINVAL;
@@ -142,6 +134,20 @@ static int nc_set_active(struct console_device *cdev,
unsigned flags)
return 0;
}
+static int nc_close(struct console_device *cdev)
+{
+ struct nc_priv *priv = container_of(cdev,
+ struct nc_priv, cdev);
+
+ if (priv->con) {
+ net_unregister(priv->con);
+ priv->con = NULL;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
static int netconsole_init(void)
{
struct nc_priv *priv;
@@ -155,7 +161,8 @@ static int netconsole_init(void)
cdev->getc = nc_getc;
cdev->devname = "netconsole";
cdev->devid = DEVICE_ID_SINGLE;
- cdev->set_active = nc_set_active;
+ cdev->open = nc_open;
+ cdev->close = nc_close;
g_priv = priv;
--
2.11.0
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