[Intel-gfx] [PATCH] drm/i915: Make WAIT_IOCTL negative timeouts be indefinite again

[Daniel Vetter]

On Fri, Mar 06, 2015 at 08:54:35AM +0000, Chris Wilson wrote:
> On Thu, Mar 05, 2015 at 01:27:43PM +0100, Daniel Vetter wrote:
> > On Wed, Mar 04, 2015 at 06:09:26PM +0000, Chris Wilson wrote:
> > > This fixes a regression from
> > > 
> > > commit 5ed0bdf21a85d78e04f89f15ccf227562177cbd9
> > > Author: Thomas Gleixner <tglx at linutronix.de>
> > > Date:   Wed Jul 16 21:05:06 2014 +0000
> > > 
> > >     drm: i915: Use nsec based interfaces
> > > 
> > > that made a negative timeout return immediately rather than the
> > > previously defined behaviour of waiting indefinitely.
> > > 
> > > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > > Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> > > Cc: Ben Widawsky <benjamin.widawsky at intel.com>
> > > Cc: Kristian Høgsberg <krh at bitplanet.net>
> > > Cc: stable at vger.kernel.org
> > 
> > Do you have the igt for this too? I think an wait while the buffer should
> > be busy with a negative timeout is all that's needed to exercise this.
> 
> Done.
> Testcase: igt/gem_wait

Thanks a lot.

Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>

Cheers, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch