diff options
| author | David S. Miller <davem@davemloft.net> | 2013-05-24 16:48:28 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-05-24 16:48:28 -0700 |
| commit | e6ff4c75f9095f61b3a66c2a78e47b62864022dd (patch) | |
| tree | 425ea9463cbec0b1975b8a33d9a56817143055d0 /drivers/char/lp.c | |
| parent | ee9c799c231324de681eb21e06d8bf4842768b75 (diff) | |
| parent | 0e255f1c0c9add2f0c920240ac4cadc28ae274c3 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Merge net into net-next because some upcoming net-next changes
build on top of bug fixes that went into net.
Signed-off-by: David S. Miller <davem@davemloft.net>
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 dafd9ac6428f..0913d79424d3 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; |