diff options
Diffstat (limited to 'kernel/printk/printk.c')
| -rw-r--r-- | kernel/printk/printk.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 17def3791bc0..1c9720acd960 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -3331,12 +3331,6 @@ static void try_enable_default_console(struct console *newcon) newcon->flags |= CON_CONSDEV; } -#define con_printk(lvl, con, fmt, ...) \ - printk(lvl pr_fmt("%s%sconsole [%s%d] " fmt), \ - (con->flags & CON_NBCON) ? "" : "legacy ", \ - (con->flags & CON_BOOT) ? "boot" : "", \ - con->name, con->index, ##__VA_ARGS__) - static void console_init_seq(struct console *newcon, bool bootcon_registered) { struct console *con; @@ -3450,6 +3444,15 @@ void register_console(struct console *newcon) goto unlock; } + if (newcon->flags & CON_NBCON) { + /* + * Ensure the nbcon console buffers can be allocated + * before modifying any global data. + */ + if (!nbcon_alloc(newcon)) + goto unlock; + } + /* * See if we want to enable this console driver by default. * @@ -3477,8 +3480,11 @@ void register_console(struct console *newcon) err = try_enable_preferred_console(newcon, false); /* printk() messages are not printed to the Braille console. */ - if (err || newcon->flags & CON_BRL) + if (err || newcon->flags & CON_BRL) { + if (newcon->flags & CON_NBCON) + nbcon_free(newcon); goto unlock; + } /* * If we have a bootconsole, and are switching to a real console, @@ -3589,7 +3595,7 @@ static int unregister_console_locked(struct console *console) synchronize_srcu(&console_srcu); if (console->flags & CON_NBCON) - nbcon_cleanup(console); + nbcon_free(console); console_sysfs_notify(); |