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| author | Robert Jarzmik <robert.jarzmik@atosorigin.com> | 2011-11-24 04:01:26 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-12-05 17:59:02 +0100 |
| commit | ea8314d19f6441061232549ec41ab0e21abd74ca (patch) | |
| tree | 7187c9b51a458622aaa3500b890cf1509d895a70 /common | |
| parent | 2504dcd33209db69ebb48ae7d1c5834cdc5c023f (diff) | |
| download | barebox-ea8314d19f6441061232549ec41ab0e21abd74ca.tar.gz barebox-ea8314d19f6441061232549ec41ab0e21abd74ca.tar.xz | |
console: add console unregistering
Some console are transient, like the USB connected serial
console which should be removed when the USB connection is
severed.
Enable console removal for such devices.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common')
| -rw-r--r-- | common/console.c | 24 | ||||
| -rw-r--r-- | common/console_simple.c | 4 |
2 files changed, 22 insertions, 6 deletions
diff --git a/common/console.c b/common/console.c index 944dd07197..219148d097 100644 --- a/common/console.c +++ b/common/console.c @@ -154,13 +154,9 @@ int console_register(struct console_device *newcdev) list_add_tail(&newcdev->list, &console_list); - if (console_output_buffer) { - while (kfifo_getc(console_output_buffer, &ch) == 0) - console_putc(CONSOLE_STDOUT, ch); - kfifo_free(console_output_buffer); - console_output_buffer = NULL; - } + while (kfifo_getc(console_output_buffer, &ch) == 0) + console_putc(CONSOLE_STDOUT, ch); if (first) barebox_banner(); @@ -168,6 +164,22 @@ int console_register(struct console_device *newcdev) } EXPORT_SYMBOL(console_register); +int console_unregister(struct console_device *cdev) +{ + struct device_d *dev = &cdev->class_dev; + int status; + + list_del(&cdev->list); + if (list_empty(&console_list)) + initialized = CONSOLE_UNINITIALIZED; + + status = unregister_device(dev); + if (!status) + memset(cdev, 0, sizeof(*cdev)); + return status; +} +EXPORT_SYMBOL(console_unregister); + static int getc_raw(void) { struct console_device *cdev; diff --git a/common/console_simple.c b/common/console_simple.c index 7304d8ee05..7e0619db02 100644 --- a/common/console_simple.c +++ b/common/console_simple.c @@ -157,3 +157,7 @@ int console_register(struct console_device *newcdev) } return 0; } + +int console_unregister(struct console_device *cdev) +{ +} |