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staging: comedi: remove redundant pointer dereference in comedi_poll()

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`s->async->subdevice` in `comedi_poll()` points to the same `struct
comedi_subdevice` as `s`, so the double pointer reference is redundant.
Just use `s`.

(`s->async->subdevice` is initialized by
`__comedi_device_postconfig_async()` in
"drivers/staging/comedi/drivers.c" and doesn't change.)

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott
2014-05-02 13:50:13 +01:00
committed by Greg Kroah-Hartman
parent 6e2954e801
commit 0ce016d098
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/comedi/comedi_fops.c
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@@ -2035,7 +2035,7 @@ static unsigned int comedi_poll(struct file *file, poll_table *wait)
s = comedi_write_subdevice(dev, minor);
if (s && s->async) {
unsigned int bps = bytes_per_sample(s->async->subdevice);
unsigned int bps = bytes_per_sample(s);
poll_wait(file, &s->async->wait_head, wait);
comedi_buf_write_alloc(s->async, s->async->prealloc_bufsz);