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02070f0498
If the callback is going to have to attempt to grab more locks, it is useful to have an ww_acquire_ctx to avoid locking order problems. Why not use the drm_exec helper instead? Mainly because (a) where ww_acquire_init() is called is awkward, and (b) we don't really need to retry after backoff, we can just move on to the next object. Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com> Tested-by: Antonino Maniscalco <antomani103@gmail.com> Reviewed-by: Antonino Maniscalco <antomani103@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/661463/