[Intel-gfx] [PATCH] drm/core: Do not call drm_framebuffer_remove internally during teardown.

Maarten Lankhorst maarten.lankhorst at linux.intel.com
Wed Sep 9 07:33:33 PDT 2015


Op 09-09-15 om 13:59 schreef Daniel Vetter:
> On Wed, Sep 9, 2015 at 1:51 PM, Ville Syrjälä
> <ville.syrjala at linux.intel.com> wrote:
>> On Wed, Sep 09, 2015 at 01:46:21PM +0200, Maarten Lankhorst wrote:
>>> This may cause issues because encoders are already destroyed so removing
>>> active primaries may use freed memory. Instead free the fb directly,
>>> ignoring refcount.
>> So what about fixing the cause, not the symptom? That is remove
>> framebuffers before nuking crtc/encoders/etc.
> Also by that point we shouldn't have any framebuffers left (the
> WARN_ON is for that), so not sure what's the point of this patch.
> -Daniel
Yes, but the current way would crash on atomic because encoders are already done. This removes a caller of drm_framebuffer_remove and uses the correct destroy function regardless even when refcounts are leaked. :)

~Maarten


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