diff options
Diffstat (limited to 'drivers/staging/comedi/proc.c')
| -rw-r--r-- | drivers/staging/comedi/proc.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/staging/comedi/proc.c b/drivers/staging/comedi/proc.c index ade00035d3bb..da6bc5855ebc 100644 --- a/drivers/staging/comedi/proc.c +++ b/drivers/staging/comedi/proc.c @@ -41,16 +41,20 @@ static int comedi_read(struct seq_file *m, void *v) "driver_name, board_name, n_subdevices"); for (i = 0; i < COMEDI_NUM_BOARD_MINORS; i++) { - struct comedi_device *dev = comedi_dev_from_minor(i); + struct comedi_device *dev = comedi_dev_get_from_minor(i); + if (!dev) continue; + down_read(&dev->attach_lock); if (dev->attached) { devices_q = 1; seq_printf(m, "%2d: %-20s %-20s %4d\n", i, dev->driver->driver_name, dev->board_name, dev->n_subdevices); } + up_read(&dev->attach_lock); + comedi_dev_put(dev); } if (!devices_q) seq_puts(m, "no devices\n"); |