diff options
Diffstat (limited to 'drivers/tty/tty_io.c')
| -rw-r--r-- | drivers/tty/tty_io.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index c74a00ad7add..bd2715a9d8e5 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -1267,16 +1267,17 @@ static void pty_line_name(struct tty_driver *driver, int index, char *p) * @p: output buffer of at least 7 bytes * * Generate a name from a driver reference and write it to the output - * buffer. + * buffer. Return the number of bytes written. * * Locking: None */ -static void tty_line_name(struct tty_driver *driver, int index, char *p) +static ssize_t tty_line_name(struct tty_driver *driver, int index, char *p) { if (driver->flags & TTY_DRIVER_UNNUMBERED_NODE) - strcpy(p, driver->name); + return sprintf(p, "%s", driver->name); else - sprintf(p, "%s%d", driver->name, index + driver->name_base); + return sprintf(p, "%s%d", driver->name, + index + driver->name_base); } /** @@ -3545,9 +3546,19 @@ static ssize_t show_cons_active(struct device *dev, if (i >= ARRAY_SIZE(cs)) break; } - while (i--) - count += sprintf(buf + count, "%s%d%c", - cs[i]->name, cs[i]->index, i ? ' ':'\n'); + while (i--) { + struct tty_driver *driver; + const char *name = cs[i]->name; + int index = cs[i]->index; + + driver = cs[i]->device(cs[i], &index); + if (driver) { + count += tty_line_name(driver, index, buf + count); + count += sprintf(buf + count, "%c", i ? ' ':'\n'); + } else + count += sprintf(buf + count, "%s%d%c", + name, index, i ? ' ':'\n'); + } console_unlock(); return count; |