From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3097127B4FB; Wed, 26 Nov 2025 13:20:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764163203; cv=none; b=Uvy6rdrxzLH9oMWp+rBXDtMayyVWda2MnSz+ya9DvIEx4AZr7g4QJffwNL8z7PHaHPkZfdreJaze8FxOaogb3XHwXQ3aMzmmQavHF3gY5lIZCyr4ST5dA6b8hUU6KwWgXL8cElMah9fY5YCBqULcRBDWUJv5LG8XTuP9nkIZ9aY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764163203; c=relaxed/simple; bh=Sxi/6Q4jvM2wf7pGd7IQAsQCeNxuHVhX9VsDta4LQiA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=dpOlLs4d7ZooQBzrqhEWYCgIWetdjqsWxHbrgyEVzLlIP6cEIw9G6KV6bg0xbXR3sqHQD5ArV4ccczVN9W5bZKdF7WZty2CYtjMtDXPqjvHQVlI7yl4B2PzyirDP4FHIPPhU5J8lO/IgIDci33/6s6pnLs8xRb4N+tbZJYmflQU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YloxW97u; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YloxW97u" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 88A38C113D0; Wed, 26 Nov 2025 13:19:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1764163201; bh=Sxi/6Q4jvM2wf7pGd7IQAsQCeNxuHVhX9VsDta4LQiA=; h=From:To:Cc:Subject:Date:From; b=YloxW97ukkemiEAEPPhT3JNEHRNsVszBesyclyxTRy/EnrWClbK0bOMKoj3DfHXYz qoI4/w2RckPGF92iCtRSt0iYnXyoM8Tc88E/i3SGDnoJAVqj1KaIxoqV/t0KumtfHg 7eQHOasX20pp/F4RF8CDvu7tYubl2WDsVGsRbqWeXsn9htX/5681mjms4g1PWtPT9m Z0H73pNH42qhH97McsOJran19ljL/9/E989x8UdZfitpJSEVz95DcX/Dbty5lKKfmz D63AVLSZR/MJ4CnCHUZ4j/BSbAPPTzStWNmNcKA9dSOgRtNbeK2KIECPRkfHhReJzG QTlTTkRMr0uGg== From: Philipp Stanner To: Sumit Semwal , Gustavo Padovan , =?UTF-8?q?Christian=20K=C3=B6nig?= , Felix Kuehling , Alex Deucher , David Airlie , Simona Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , Huang Rui , Matthew Auld , Matthew Brost , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Lucas De Marchi , =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= Cc: linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, rust-for-linux@vger.kernel.org, Philipp Stanner Subject: [PATCH 0/6] dma-fence: Remove return code of dma_fence_signal() et al. Date: Wed, 26 Nov 2025 14:19:09 +0100 Message-ID: <20251126131914.149445-2-phasta@kernel.org> X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Barely anyone uses dma_fence_signal()'s (and similar functions') return code. Checking it is pretty much useless anyways, because what are you going to do if a fence was already signal it? Unsignal it and signal it again? ;p Removing the return code simplifies the API and makes it easier for me to sit on top with Rust DmaFence. Philipp Stanner (6): dma-buf/dma-fence: Add dma_fence_test_signaled_flag() amd/amdkfd: Ignore return code of dma_fence_signal() drm/gpu/xe: Ignore dma_fenc_signal() return code dma-buf: Don't misuse dma_fence_signal() drm/ttm: Remove return check of dma_fence_signal() dma-buf/dma-fence: Remove return code of signaling-functions drivers/dma-buf/dma-fence.c | 59 ++++++------------- drivers/dma-buf/st-dma-fence.c | 7 +-- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 5 +- .../gpu/drm/ttm/tests/ttm_bo_validate_test.c | 3 +- drivers/gpu/drm/xe/xe_hw_fence.c | 5 +- include/linux/dma-fence.h | 33 ++++++++--- 6 files changed, 53 insertions(+), 59 deletions(-) -- 2.49.0