diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-27 11:00:52 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-27 11:00:52 +0900 |
| commit | 45f6bc5ff9c3387387f048ec85dcb4e69acf0b03 (patch) | |
| tree | d04952bb05b53a362bcd165fb910c5c1441b4c5d /drivers/char/lp.c | |
| parent | 3138887bd8d18173f3c2baf1e43621c49090cd27 (diff) | |
| parent | e4aa937ec75df0eea0bee03bffa3303ad36c986b (diff) | |
Merge 3.10-rc3 into usb-next
We want these fixes.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char/lp.c')
| -rw-r--r-- | drivers/char/lp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/char/lp.c b/drivers/char/lp.c index dafd9ac6428..0913d79424d 100644 --- a/drivers/char/lp.c +++ b/drivers/char/lp.c @@ -622,9 +622,12 @@ static int lp_do_ioctl(unsigned int minor, unsigned int cmd, return -EFAULT; break; case LPGETSTATUS: + if (mutex_lock_interruptible(&lp_table[minor].port_mutex)) + return -EINTR; lp_claim_parport_or_block (&lp_table[minor]); status = r_str(minor); lp_release_parport (&lp_table[minor]); + mutex_unlock(&lp_table[minor].port_mutex); if (copy_to_user(argp, &status, sizeof(int))) return -EFAULT; |