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| author | Alan Cox <alan@redhat.com> | 2008-10-13 11:39:46 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-13 18:51:41 +0200 |
| commit | 4a90f09b20f4622dcbff1f0e1e6bae1704f8ad8c (patch) | |
| tree | 9b275f88f2705cb10121d5982741aef3a088a7c8 /drivers/usb/serial/navman.c | |
| parent | tty: Move tty_write_message out of kernel/printk (diff) | |
| download | linux-4a90f09b20f4622dcbff1f0e1e6bae1704f8ad8c.tar.xz linux-4a90f09b20f4622dcbff1f0e1e6bae1704f8ad8c.zip | |
tty: usb-serial krefs
Use kref in the USB serial drivers so that we don't free tty structures
from under the URB receive handlers as has historically been the case if
you were unlucky. This also gives us a framework for general tty drivers to
use tty_port objects and refcount.
Contains two err->dev_err changes merged together to fix clashes in the
-next tree.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/usb/serial/navman.c')
| -rw-r--r-- | drivers/usb/serial/navman.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/serial/navman.c b/drivers/usb/serial/navman.c index d6736531a0fa..bcdcbb822705 100644 --- a/drivers/usb/serial/navman.c +++ b/drivers/usb/serial/navman.c @@ -64,12 +64,13 @@ static void navman_read_int_callback(struct urb *urb) usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); - tty = port->port.tty; + tty = tty_port_tty_get(&port->port); if (tty && urb->actual_length) { tty_buffer_request_room(tty, urb->actual_length); tty_insert_flip_string(tty, data, urb->actual_length); tty_flip_buffer_push(tty); } + tty_kref_put(tty); exit: result = usb_submit_urb(urb, GFP_ATOMIC); |