diff options
| author |   Paul Mackerras <paulus@samba.org> | 2006-02-07 10:43:36 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-02-07 10:43:36 +1100 |
| commit | 6cb6524d90b6e5497e79a1474bdb2f26755d1c02 (patch) | |
| tree | fd475ac8f57a6bd39c976056324d1bc79d11b4c9 /drivers/usb/class/cdc-acm.c | |
| parent | [PATCH] sem2mutex: drivers/macintosh/windfarm_core.c (diff) | |
| parent | [PATCH] USB: Fix GPL markings on usb core functions. (diff) | |
| download | linux-dev-6cb6524d90b6e5497e79a1474bdb2f26755d1c02.tar.xz linux-dev-6cb6524d90b6e5497e79a1474bdb2f26755d1c02.zip | |
Merge ../linux-2.6
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index b9fd39fd1b5b..97bdeb1c2181 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1014,8 +1014,13 @@ static void acm_disconnect(struct usb_interface *intf) } down(&open_sem); + if (!usb_get_intfdata(intf)) { + up(&open_sem); + return; + } acm->dev = NULL; - usb_set_intfdata (intf, NULL); + usb_set_intfdata(acm->control, NULL); + usb_set_intfdata(acm->data, NULL); tasklet_disable(&acm->urb_task); @@ -1036,7 +1041,7 @@ static void acm_disconnect(struct usb_interface *intf) for (i = 0; i < ACM_NRB; i++) usb_buffer_free(usb_dev, acm->readsize, acm->rb[i].base, acm->rb[i].dma); - usb_driver_release_interface(&acm_driver, acm->data); + usb_driver_release_interface(&acm_driver, intf == acm->control ? acm->data : intf); if (!acm->used) { acm_tty_unregister(acm); |