diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/lp.c | 3 | ||||
| -rw-r--r-- | drivers/char/ttyprintk.c | 2 |
2 files changed, 4 insertions, 1 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; diff --git a/drivers/char/ttyprintk.c b/drivers/char/ttyprintk.c index 4945bd3d18d0..d5d2e4a985aa 100644 --- a/drivers/char/ttyprintk.c +++ b/drivers/char/ttyprintk.c @@ -179,7 +179,6 @@ static int __init ttyprintk_init(void) { int ret = -ENOMEM; - tpk_port.port.ops = &null_ops; mutex_init(&tpk_port.port_write_mutex); ttyprintk_driver = tty_alloc_driver(1, @@ -190,6 +189,7 @@ static int __init ttyprintk_init(void) return PTR_ERR(ttyprintk_driver); tty_port_init(&tpk_port.port); + tpk_port.port.ops = &null_ops; ttyprintk_driver->driver_name = "ttyprintk"; ttyprintk_driver->name = "ttyprintk"; |