Re: [PATCH 07/37] drm: Extract drm_vblank.[hc]

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On Mon, May 29, 2017 at 12:36:54PM -0700, Stefan Agner wrote:
> On 2017-05-24 07:51, Daniel Vetter wrote:
> > drm_irq.c contains both the irq helper library (optional) and the
> > vblank support (optional, but part of the modeset uapi, and doesn't
> > require the use of the irq helpers at all.
> > 
> > Split this up for more clarity of the scope of the individual bits.
> > 
> > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> > ---
> >  Documentation/gpu/drm-kms.rst |    4 +-
> >  drivers/gpu/drm/drm_irq.c     | 1623 +---------------------------------------
> >  drivers/gpu/drm/drm_vblank.c  | 1645 +++++++++++++++++++++++++++++++++++++++++
> >  include/drm/drmP.h            |    5 +-
> >  include/drm/drm_file.h        |    1 +
> >  include/drm/drm_irq.h         |  158 +---
> >  include/drm/drm_prime.h       |    2 +
> >  include/drm/drm_vblank.h      |  181 +++++
> >  8 files changed, 1857 insertions(+), 1762 deletions(-)
> >  create mode 100644 drivers/gpu/drm/drm_vblank.c
> >  create mode 100644 include/drm/drm_vblank.h
> > 
> > diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
> > index bfecd21a8cdf..2d77c9580164 100644
> > --- a/Documentation/gpu/drm-kms.rst
> > +++ b/Documentation/gpu/drm-kms.rst
> > @@ -612,8 +612,8 @@ operation handler.
> >  Vertical Blanking and Interrupt Handling Functions Reference
> >  ------------------------------------------------------------
> >  
> > -.. kernel-doc:: include/drm/drm_irq.h
> > +.. kernel-doc:: include/drm/drm_vblank.h
> >     :internal:
> >  
> > -.. kernel-doc:: drivers/gpu/drm/drm_irq.c
> > +.. kernel-doc:: drivers/gpu/drm/drm_vblank.c
> 
> Is that removing drm_irq from kernel-docs? Why? At least the C files
> seems to contain valid kernel docs...

Get's fixed in the next patch again, where I re-add them when rewriting
all the irq docs. Thats why I said these two patches depend upon each
another :-)

I can shuffle the include hunk of the rewrite into this patch if you think
it's better, but I figured renaming/splitting separate from rewriting the
docs is good.

> 
> >     :export:
> > diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
> > index c7debaad67f8..28d736c3fcb4 100644
> > --- a/drivers/gpu/drm/drm_irq.c
> > +++ b/drivers/gpu/drm/drm_irq.c
> 
> <snip>  
> 
> >  /**
> >   * drm_irq_install - install IRQ handler
> > @@ -571,7 +176,7 @@ int drm_irq_uninstall(struct drm_device *dev)
> >  
> >  			WARN_ON(drm_core_check_feature(dev, DRIVER_MODESET));
> >  
> > -			vblank_disable_and_save(dev, i);
> > +			drm_vblank_disable_and_save(dev, i);
> 
> This leads to:
> 
> drivers/gpu/drm/drm_irq.c: In function 'drm_irq_uninstall':           
> drivers/gpu/drm/drm_irq.c:179:4: error: implicit declaration of function
> 'drm_vblank_disable_and_save' [-Werror=implicit-function-declaration]   
>                              
>     drm_vblank_disable_and_save(dev, i);                              
>     ^
> 
> Since you moved the function to drm_vblank.c, I guess you have to add a
> deceleration in drm_vblank.h?

Oops, misplaced hunk, a later patch adds it to drm_internal.h. I'll fix
that up.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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