linux-kernel - [PATCH 5.16 0414/1017] drm/locking: fix drm_modeset_acquire

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Date:   Tue,  5 Apr 2022 09:22:07 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Stephen Rothwell <sfr@...b.auug.org.au>,
        Jani Nikula <jani.nikula@...el.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 0414/1017] drm/locking: fix drm_modeset_acquire_ctx kernel-doc

From: Jani Nikula <jani.nikula@...el.com>

[ Upstream commit 6f043b5969a4d6d385ca429388ded37e30e0d179 ]

The stack_depot member was added without kernel-doc, leading to below
warning. Fix it.

./include/drm/drm_modeset_lock.h:74: warning: Function parameter or
member 'stack_depot' not described in 'drm_modeset_acquire_ctx'

Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Fixes: cd06ab2fd48f ("drm/locking: add backtrace for locking contended locks without backoff")
Signed-off-by: Jani Nikula <jani.nikula@...el.com>
Reviewed-by: Daniel Vetter <daniel.vetter@...ll.ch>
Tested-by: Stephen Rothwell <sfr@...b.auug.org.au>
Link: https://patchwork.freedesktop.org/patch/msgid/20220120094856.3004147-1-jani.nikula@intel.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 include/drm/drm_modeset_lock.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/drm/drm_modeset_lock.h b/include/drm/drm_modeset_lock.h
index b84693fbd2b5..ec4f543c3d95 100644
--- a/include/drm/drm_modeset_lock.h
+++ b/include/drm/drm_modeset_lock.h
@@ -34,6 +34,7 @@ struct drm_modeset_lock;
  * struct drm_modeset_acquire_ctx - locking context (see ww_acquire_ctx)
  * @ww_ctx: base acquire ctx
  * @contended: used internally for -EDEADLK handling
+ * @stack_depot: used internally for contention debugging
  * @locked: list of held locks
  * @trylock_only: trylock mode used in atomic contexts/panic notifiers
  * @interruptible: whether interruptible locking should be used.
-- 
2.34.1