diff options
| author | Varun Wadekar <vwadekar@nvidia.com> | 2012-01-16 15:32:21 +0530 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2012-01-16 15:32:21 +0530 |
| commit | 7919e929aa227048738e14df6bcbad3ee4458443 (patch) | |
| tree | 0c38267369fa636d7435bf22af39e3783a24ef62 /drivers/usb/class/cdc-acm.c | |
| parent | fcbd75c6b179b717b074d0cb7490e42ae728fb2d (diff) | |
| parent | 93dad393c796013cb6371be63d7af600c5e36c2c (diff) | |
Merge branch 'linux-3.1.y' into android-tegra-nv-3.1
Linux 3.1.9
Conflicts:
Makefile
Change-Id: I22227ab33ba7ddaba8e6fe049393c58a83d73648
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index a9193e3de7e1..98c0e79110f4 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -562,10 +562,18 @@ static void acm_port_down(struct acm *acm) static void acm_tty_hangup(struct tty_struct *tty) { - struct acm *acm = tty->driver_data; - tty_port_hangup(&acm->port); + struct acm *acm; + mutex_lock(&open_mutex); + acm = tty->driver_data; + + if (!acm) + goto out; + + tty_port_hangup(&acm->port); acm_port_down(acm); + +out: mutex_unlock(&open_mutex); } @@ -1198,6 +1206,8 @@ made_compressed_probe: i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); if (i < 0) { kfree(acm->country_codes); + acm->country_codes = NULL; + acm->country_code_size = 0; goto skip_countries; } @@ -1206,6 +1216,8 @@ made_compressed_probe: if (i < 0) { device_remove_file(&intf->dev, &dev_attr_wCountryCodes); kfree(acm->country_codes); + acm->country_codes = NULL; + acm->country_code_size = 0; goto skip_countries; } } |