linux-kernel - [PATCH 2/2] drm/i915: mark i915_gem_object_trylock() as __must

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Message-ID: <6005320.MhkbZ0Pkbq@devpool47.emlix.com>
Date: Thu, 19 Dec 2024 11:18:08 +0100
From: Rolf Eike Beer <eb@...ix.com>
To: Jani Nikula <jani.nikula@...ux.intel.com>,
 Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
 Rodrigo Vivi <rodrigo.vivi@...el.com>, Tvrtko Ursulin <tursulin@...ulin.net>
Cc: intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] drm/i915: mark i915_gem_object_trylock() as __must_check

When you don't look at the return code you can't know if you actually got the
lock.

Signed-off-by: Rolf Eike Beer <eb@...ix.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_object.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
index 3dc61cbd2e11..b6da8b561ae0 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -198,8 +198,8 @@ static inline int i915_gem_object_lock_interruptible(struct drm_i915_gem_object
 	return __i915_gem_object_lock(obj, ww, true);
 }
 
-static inline bool i915_gem_object_trylock(struct drm_i915_gem_object *obj,
-					   struct i915_gem_ww_ctx *ww)
+static inline bool __must_check i915_gem_object_trylock(struct drm_i915_gem_object *obj,
+							struct i915_gem_ww_ctx *ww)
 {
 	if (!ww)
 		return dma_resv_trylock(obj->base.resv);
-- 
2.47.1


-- 
Rolf Eike Beer

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