diff options
Diffstat (limited to 'drivers/staging/comedi/comedi_fops.c')
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index e78ddbe5a954..fc339c5c50fc 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -679,8 +679,28 @@ static bool comedi_is_subdevice_idle(struct comedi_subdevice *s) return !(runflags & COMEDI_SRF_BUSY_MASK); } +bool comedi_can_auto_free_spriv(struct comedi_subdevice *s) +{ + unsigned runflags = __comedi_get_subdevice_runflags(s); + + return runflags & COMEDI_SRF_FREE_SPRIV; +} + +/** + * comedi_set_spriv_auto_free - mark subdevice private data as freeable + * @s: comedi_subdevice struct + * + * Mark the subdevice as having a pointer to private data that can be + * automatically freed by the comedi core during the detach. + */ +void comedi_set_spriv_auto_free(struct comedi_subdevice *s) +{ + __comedi_set_subdevice_runflags(s, COMEDI_SRF_FREE_SPRIV); +} +EXPORT_SYMBOL_GPL(comedi_set_spriv_auto_free); + /** - * comedi_alloc_spriv() - Allocate memory for the subdevice private data. + * comedi_alloc_spriv - Allocate memory for the subdevice private data. * @s: comedi_subdevice struct * @size: size of the memory to allocate * @@ -691,7 +711,7 @@ void *comedi_alloc_spriv(struct comedi_subdevice *s, size_t size) { s->private = kzalloc(size, GFP_KERNEL); if (s->private) - s->runflags |= COMEDI_SRF_FREE_SPRIV; + comedi_set_spriv_auto_free(s); return s->private; } EXPORT_SYMBOL_GPL(comedi_alloc_spriv); |