On Thu, Aug 27, 2015 at 01:58:09PM +0200, Maarten Lankhorst wrote:
> This will make sure we get a lockdep spat in all cases
> even if the context is a complete garbage pointer.
>
> Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Applied to drm-misc, thanks.
-Daniel
> ---
> diff --git a/drivers/gpu/drm/drm_modeset_lock.c
> b/drivers/gpu/drm/drm_modeset_lock.c
> index 9abee87c1501..7c9ca2381d78 100644
> --- a/drivers/gpu/drm/drm_modeset_lock.c
> +++ b/drivers/gpu/drm/drm_modeset_lock.c
> @@ -305,6 +305,8 @@ static inline int modeset_lock(struct drm_modeset_lock
> *lock,
> WARN_ON(ctx->contended);
>
> if (ctx->trylock_only) {
> + lockdep_assert_held(&ctx->ww_ctx);
> +
> if (!ww_mutex_trylock(&lock->mutex))
> return -EBUSY;
> else
>
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> Intel-gfx@lists.freedesktop.org
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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