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由 Daniel Vetter 提交于
This only grabs the mutex when really needed, but still has a might- acquire lockdep check to make sure that's always possible. With this patch Tegra DRM is officially struct_mutex free, yay! v2: refernce_unlocked doesn't exist as kbuild spotted. Cc: Thierry Reding <thierry.reding@gmail.com> Acked-by: NThierry Reding <thierry.reding@gmail.com> Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com> [treding@nvidia.com: remove unused variables] Signed-off-by: NThierry Reding <treding@nvidia.com>
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