lkml.org 
[lkml]   [2014]   [Jan]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] Staging: comedi: move trailing statement to next line in ni_mio_common.c
On Mon, Jan 13, 2014 at 07:16:14PM -0800, Joe Perches wrote:
> On Mon, 2014-01-13 at 21:13 -0600, Chase Southwood wrote:
> > This patch for ni_mio_common.c silences a checkpatch error due to a
> > trailing statement.
> []
> > diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
> []
> > @@ -692,7 +692,8 @@ static void ni_clear_ai_fifo(struct comedi_device *dev)
> > /* Flush the 6143 data FIFO */
> > ni_writel(0x10, AIFIFO_Control_6143); /* Flush fifo */
> > ni_writel(0x00, AIFIFO_Control_6143); /* Flush fifo */
> > - while (ni_readl(AIFIFO_Status_6143) & 0x10) ; /* Wait for complete */
> > + while (ni_readl(AIFIFO_Status_6143) & 0x10)
> > + ; /* Wait for complete */
>
> It's generally better to use timeouts too.

Just to clarify what Joe is saying do:

/* Wait for complete */
while (timemout < TIMEOUT) {
if (ni_readl(AIFIFO_Status_6143) & 0x10)
break;
udelay(1);
}

I added in a delay... The problem is that you'd probably have to look
at the hardware spec to know what timeout to use or if the delay is
needed.

regards,
dan carpenter



\
 
 \ /
  Last update: 2014-01-14 09:01    [W:0.969 / U:0.068 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site