Re: [Intel-gfx] [PATCH] drm/fb-helper: Automatically clean up fb_info

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On Tue, Feb 07, 2017 at 02:38:16PM +0000, Emil Velikov wrote:
> On 7 February 2017 at 14:29, Daniel Vetter <daniel.vetter@xxxxxxxx> wrote:
> > Noticed that everyone duplicates the same logic here and we could safe
> > a few lines per driver. Yay for lots of drivers to make such tiny
> > refactors worth-while!
> >
> > v2: Forgot to git add everything :(
> >
> Hmm afaict this patch inlines drm_fb_helper_release_fbi within
> drm_fb_helper_fini yet it is missing:
>  - removal of the (now unused ?) drm_fb_helper_release_fbi
>  - the leaks which now occur in the error paths.

The error cleanup is a bit unobvious. The fbi is allocated during the
create/initial_fb callback, which is after a successful
framebuffer_init. The caller must be prepared to do a framebuffer_fini
(and so release_fbi will be handled if required) on failure or success.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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