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Subject[PATCH v2 20/41] CAPI: Clean up capinc_tty_init/exit
Date
Return proper error code if tty_register_driver fails. In contrast,
tty_unregister_driver cannot practically fail, so drop that error
handling. Finally, mark capinc_tty_init/exit with __init/__exit.

Signed-off-by: Jan Kiszka <jan.kiszka@web.de>
---
drivers/isdn/capi/capi.c | 20 ++++++++++----------
1 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index 46f85ae..c22b349 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -1307,10 +1307,11 @@ static const struct tty_operations capinc_ops = {
.send_xchar = capinc_tty_send_xchar,
};

-static int capinc_tty_init(void)
+static int __init capinc_tty_init(void)
{
struct tty_driver *drv;
-
+ int err;
+
if (capi_ttyminors > CAPINC_MAX_PORTS)
capi_ttyminors = CAPINC_MAX_PORTS;
if (capi_ttyminors <= 0)
@@ -1340,23 +1341,22 @@ static int capinc_tty_init(void)
drv->init_termios.c_lflag = 0;
drv->flags = TTY_DRIVER_REAL_RAW|TTY_DRIVER_RESET_TERMIOS;
tty_set_operations(drv, &capinc_ops);
- if (tty_register_driver(drv)) {
+
+ err = tty_register_driver(drv);
+ if (err) {
put_tty_driver(drv);
kfree(capiminors);
printk(KERN_ERR "Couldn't register capi_nc driver\n");
- return -1;
+ return err;
}
capinc_tty_driver = drv;
return 0;
}

-static void capinc_tty_exit(void)
+static void __exit capinc_tty_exit(void)
{
- struct tty_driver *drv = capinc_tty_driver;
- int retval;
- if ((retval = tty_unregister_driver(drv)))
- printk(KERN_ERR "capi: failed to unregister capi_nc driver (%d)\n", retval);
- put_tty_driver(drv);
+ tty_unregister_driver(capinc_tty_driver);
+ put_tty_driver(capinc_tty_driver);
kfree(capiminors);
}

--
1.6.0.2


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