diff options
Diffstat (limited to 'drivers/usb/class')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 10 | ||||
| -rw-r--r-- | drivers/usb/class/usblp.c | 1 |
2 files changed, 6 insertions, 5 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index bcc42136c93..0147ea39340 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -496,13 +496,10 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp) otherwise it is scheduled, and with high data rates data can get lost. */ tty->low_latency = 1; - if (usb_autopm_get_interface(acm->control)) { - mutex_unlock(&open_mutex); - return -EIO; - } + if (usb_autopm_get_interface(acm->control) < 0) + goto early_bail; mutex_lock(&acm->mutex); - mutex_unlock(&open_mutex); if (acm->used++) { usb_autopm_put_interface(acm->control); goto done; @@ -536,6 +533,7 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp) done: err_out: mutex_unlock(&acm->mutex); + mutex_unlock(&open_mutex); return rv; full_bailout: @@ -544,6 +542,8 @@ bail_out: usb_autopm_put_interface(acm->control); acm->used--; mutex_unlock(&acm->mutex); +early_bail: + mutex_unlock(&open_mutex); return -EIO; } diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c index ad632f2d6f9..0647164d36d 100644 --- a/drivers/usb/class/usblp.c +++ b/drivers/usb/class/usblp.c @@ -428,6 +428,7 @@ static int usblp_open(struct inode *inode, struct file *file) usblp->rcomplete = 0; if (handle_bidir(usblp) < 0) { + usb_autopm_put_interface(intf); usblp->used = 0; file->private_data = NULL; retval = -EIO; |