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authorAl Viro <viro@zeniv.linux.org.uk>2011-09-10 03:45:42 +0400
committerRichard Weinberger <richard@nod.at>2012-03-25 03:29:53 +0400
commitcfe6b7c79daa0efa27f474f1fe2a88fd7af5cc47 (patch)
tree5030f25d83451e3b3e579bac4b9a2e561990048d /arch/um/drivers/ssl.c
parent31efcebb7d7196adcee73027f513d7c0bf572b47 (diff)
downloadlinux-cfe6b7c79daa0efa27f474f1fe2a88fd7af5cc47.tar.xz
um: switch line.c tty drivers to dynamic device creation
Current code doesn't update the symlinks in /sys/dev/char when we add/remove tty lines. Fixing that allows to stop messing with ->valid before the driver registration, which is a Good Thing(tm) - we shouldn't have it set before we really have the things set up and ready for line_open(). We need tty_driver available to call tty_{un,}register_device(), so we just stash a reference to it into struct line_driver. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/drivers/ssl.c')
-rw-r--r--arch/um/drivers/ssl.c17
1 files changed, 6 insertions, 11 deletions
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index 23cffd6d85af..6398a47d035b 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -20,12 +20,6 @@
static const int ssl_version = 1;
-/* Referenced only by tty_driver below - presumably it's locked correctly
- * by the tty driver.
- */
-
-static struct tty_driver *ssl_driver;
-
#define NR_PORTS 64
static void ssl_announce(char *dev_name, int dev)
@@ -164,7 +158,7 @@ static void ssl_console_write(struct console *c, const char *string,
static struct tty_driver *ssl_console_device(struct console *c, int *index)
{
*index = c->index;
- return ssl_driver;
+ return driver.driver;
}
static int ssl_console_setup(struct console *co, char *options)
@@ -187,6 +181,7 @@ static struct console ssl_cons = {
static int ssl_init(void)
{
char *new_title;
+ int err;
int i;
printk(KERN_INFO "Initializing software serial port version %d\n",
@@ -196,16 +191,16 @@ static int ssl_init(void)
char *s = conf[i];
if (!s)
s = def_conf;
- if (s && strcmp(s, "none") != 0) {
+ if (s && strcmp(s, "none") != 0)
serial_lines[i].init_str = s;
- serial_lines[i].valid = 1;
- }
spin_lock_init(&serial_lines[i].lock);
mutex_init(&serial_lines[i].count_lock);
serial_lines[i].driver = &driver;
}
- ssl_driver = register_lines(&driver, &ssl_ops, serial_lines,
+ err = register_lines(&driver, &ssl_ops, serial_lines,
ARRAY_SIZE(serial_lines));
+ if (err)
+ return err;
new_title = add_xterm_umid(opts.xterm_title);
if (new_title != NULL)