From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 D190256510D for ; Tue, 8 Sep 2026 22:04:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788905095; cv=none; b=CMAfE5us20kL5JG462pKxfU0C5ASqPIg341xltIGWZPVc9wrmBdie3x/AN7zPWKWamLcDABXT+wk6JdcfDBMB5/ksUw9yVMDpzaBLQW+BPzg1c2ngWKxIbXfUSjh3zw8luR618TwBII5M/2WvP70Db7KHQkS2I3urbzlejpQEQk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788905095; c=relaxed/simple; bh=+J7RZfgL5AzajAk1mEDu7gK55yvVTLK8+CL9C+Luh6g=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=FcN8YQk8Jyr/iBslPC2BuzmikLeUSM6SnzHuo8BqitGLgi1pqsVNO+49us2tOlgzPbeaalXjRBYSOpWH5SH83wbi7QsP8ka/OIM8vM4TjkMzuZI0l8YWv44e2kaCkI6bQBMUuFI9tI2/uEnYbbqJrtqYf1RfwDVFGRI4r3/N45s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Z9Sbuyd5; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Z9Sbuyd5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 20C351F00A3D; Tue, 8 Sep 2026 22:04:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788905093; bh=ai8d/z/jR8St5LaF9248MzOc4BaNMXKIfXmoxvaaQR8=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=Z9Sbuyd5soYPLUogOkXYWQxJ5DOum41oY9eGKtVprQupwojEkYtALmxRNx0Qi/U4g 6KgVZcsXAyM8EPITlGzTag0rMP+7QcI9J9Ox/0bgbpk+UH4fUjnTmTrmk28nfbnPf4 d9ui/wsKi9EMVvUq/CnFSgNqAehDCgXVlmUrUSwJMF1oB3oEtNT4aRgptqy5Xmp5J4 87NAxj5yh4nAhU6bwHFxU0YSIZY3294nBlLtJDwKMvL76SyPgg1TgB0Q8ZL1N5zkDy F3w47xTgIMxM5YA1X+MAMpcUV2aZoTgKkR42c//kqdFt1GlIm0X6pCv+BzO8uYGh14 F22Rqa6O8PFgQ== From: "Rob Herring (Arm)" Date: Tue, 08 Sep 2026 17:04:38 -0500 Subject: [PATCH v3 01/22] accel: ethosu: Suspend after initialization Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260908-ethosu-fixes-v3-1-490fe215286f@kernel.org> References: <20260908-ethosu-fixes-v3-0-490fe215286f@kernel.org> In-Reply-To: <20260908-ethosu-fixes-v3-0-490fe215286f@kernel.org> To: Tomeu Vizoso , Oded Gabbay , Frank Li , Thomas Zimmermann Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.16-dev The initial runtime-PM reference is held only while initializing the NPU. Release it synchronously from ethosu_init() after the final hardware access, before registering the DRM device. This keeps the runtime-PM setup and initial reference handling together and leaves the autosuspend configuration in place for subsequent jobs. Signed-off-by: Rob Herring (Arm) --- v2: - new patch --- drivers/accel/ethosu/ethosu_drv.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/accel/ethosu/ethosu_drv.c b/drivers/accel/ethosu/ethosu_drv.c index 8108622de258..df76253d01a6 100644 --- a/drivers/accel/ethosu/ethosu_drv.c +++ b/drivers/accel/ethosu/ethosu_drv.c @@ -338,6 +338,8 @@ static int ethosu_init(struct ethosu_device *ethosudev) ethosudev->npu_info.sram_size / 1024, ethosudev->npu_info.pmu_counters); + pm_runtime_put_sync_suspend(ethosudev->base.dev); + return 0; } @@ -376,10 +378,6 @@ static int ethosu_probe(struct platform_device *pdev) return ret; ret = drm_dev_register(ðosudev->base, 0); - if (ret) - pm_runtime_dont_use_autosuspend(ethosudev->base.dev); - - pm_runtime_put_autosuspend(ethosudev->base.dev); return ret; } -- 2.53.0