lkml.org 
[lkml]   [2016]   [Dec]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Tearing down DMA transfer setup after DMA client has finished
On Wed, Dec 07, 2016 at 04:45:58PM +0000, Måns Rullgård wrote:
> Vinod Koul <vinod.koul@intel.com> writes:
>
> > On Tue, Dec 06, 2016 at 01:14:20PM +0000, Måns Rullgård wrote:
> >>
> >> That's not going to work very well. Device drivers typically request
> >> dma channels in their probe functions or when the device is opened.
> >> This means that reserving one of the few channels there will inevitably
> >> make some other device fail to operate.
> >
> > No that doesnt make sense at all, you should get a channel only when you
> > want to use it and not in probe!
>
> Tell that to just about every single driver ever written.

Not really, few do yes which is wrong but not _all_ do that.

--
~Vinod

\
 
 \ /
  Last update: 2016-12-08 11:33    [W:0.363 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site