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SubjectRe: [PATCH] Staging: comedi: drivers: comedi_test: Avoid multiple line dereference
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On 20/02/17 08:28, Cheah Kok Cheong wrote:
> Fix checkpatch warning "Avoid multiple line dereference"
> using a local variable to avoid line wrap.
>
> Signed-off-by: Cheah Kok Cheong <thrust73@gmail.com>
> ---
> drivers/staging/comedi/drivers/comedi_test.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/staging/comedi/drivers/comedi_test.c b/drivers/staging/comedi/drivers/comedi_test.c
> index 2a063f0..fde83e0 100644
> --- a/drivers/staging/comedi/drivers/comedi_test.c
> +++ b/drivers/staging/comedi/drivers/comedi_test.c
> @@ -480,11 +480,9 @@ static void waveform_ao_timer(unsigned long arg)
> /* output the last scan */
> for (i = 0; i < cmd->scan_end_arg; i++) {
> unsigned int chan = CR_CHAN(cmd->chanlist[i]);
> + unsigned short d = devpriv->ao_loopbacks[chan];
>
> - if (comedi_buf_read_samples(s,
> - &devpriv->
> - ao_loopbacks[chan],
> - 1) == 0) {
> + if (!comedi_buf_read_samples(s, &d, 1)) {
> /* unexpected underrun! (cancelled?) */
> async->events |= COMEDI_CB_OVERFLOW;
> goto underrun;
>

NAK. This leaves devpriv->ao_loopbacks[chan] unchanged.

--
-=( Ian Abbott @ MEV Ltd. E-mail: <abbotti@mev.co.uk> )=-
-=( Web: http://www.mev.co.uk/ )=-

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