diff options
Diffstat (limited to 'drivers/staging/comedi/drivers.c')
| -rw-r--r-- | drivers/staging/comedi/drivers.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c index 872b598b7939..49681a1a6fa6 100644 --- a/drivers/staging/comedi/drivers.c +++ b/drivers/staging/comedi/drivers.c @@ -239,6 +239,8 @@ static int postconfig(struct comedi_device *dev) s->len_chanlist = 1; if (s->do_cmd) { + unsigned int buf_size; + BUG_ON((s->subdev_flags & (SDF_CMD_READ | SDF_CMD_WRITE)) == 0); BUG_ON(!s->do_cmdtest); @@ -254,19 +256,20 @@ static int postconfig(struct comedi_device *dev) async->subdevice = s; s->async = async; -#define DEFAULT_BUF_MAXSIZE (64*1024) -#define DEFAULT_BUF_SIZE (64*1024) - - async->max_bufsize = DEFAULT_BUF_MAXSIZE; + async->max_bufsize = + comedi_default_buf_maxsize_kb * 1024; + buf_size = comedi_default_buf_size_kb * 1024; + if (buf_size > async->max_bufsize) + buf_size = async->max_bufsize; async->prealloc_buf = NULL; async->prealloc_bufsz = 0; - if (comedi_buf_alloc(dev, s, DEFAULT_BUF_SIZE) < 0) { + if (comedi_buf_alloc(dev, s, buf_size) < 0) { printk(KERN_INFO "Buffer allocation failed\n"); return -ENOMEM; } if (s->buf_change) { - ret = s->buf_change(dev, s, DEFAULT_BUF_SIZE); + ret = s->buf_change(dev, s, buf_size); if (ret < 0) return ret; } |