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drm/tegra: Fix error handling cleanup
The DRM driver's ->load() implementation didn't do a good job (no job at all really) cleaning up on failure. Fix that by undoing any prior setup when an error occurs. This requires a bit of rework to make it possible to clean up fbdev midway. This was tested by injecting errors at various points during the initialization sequence and verifying that error cleanup didn't crash and no memory leaked (using kmemleak). Reported-by: Stéphane Marchesin <marcheu@chromium.org> Reported-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
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Thierry Reding
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Nov 13, 2014
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