drm/i915/fbc: __intel_fbc_cleanup_cfb() may be called multiple times

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Avoid releasing the same stolen nodes causing a use-after-free and/or
explosions as the self-checks fail, as __intel_fbc_cleanup_cfb() may be
called multiple times during module unload.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200130135136.1878646-1-chris@chris-wilson.co.uk

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Chris Wilson 2020-01-30 13:51:36 +00:00

parent bf72c8c6ee

commit 37b7617262

1 changed files with 4 additions and 2 deletions

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drivers/gpu/drm/i915/display/intel_fbc.c

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