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 0964D56B87E for ; Tue, 8 Sep 2026 22:04:55 +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=1788905097; cv=none; b=KMSbNqMPIFT0MViQDINeBBEYbGhPPSzBcAohSOLXdKqgTJbwJA9tQA9b0pPfeIBVNW3+y7k1MuSgYmjdmd5sEMYaKHAcmpCJNiKgTJg90JTVKf/hXan7f9p4uemJ5TgJWaGIUQur9ljWI3CvuJuptyq7m38s951qgr/vr9bUSnE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788905097; c=relaxed/simple; bh=7cDVW5k7uv+yCCX/FOtnQsCs0zUnRL+ulmsnKVge8Xk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=dFBfOYbJiXnVY0OEkyltri6cvLSTIaG91y0PZgr7P8/495G99lY9pKjQcOzC8m8JoXf7R+TbdJjyDke6VyjMBJS1/785y8i/8bEqK7LkKA+o8HZnhZAEBWW10FNxg0MMpoReLHvydcOLoe+QdPe1xpDvrFi5qpuxywZ250eBZDc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QcIgNaHn; 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="QcIgNaHn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7142F1F00A3D; Tue, 8 Sep 2026 22:04:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788905095; bh=qwUK2PGPRP9N49QDc9653gAgUPcVpEE3+mhOYY7c0D4=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=QcIgNaHnvXKOcubmt/xp5UWcjJDPUO0ISoikgJFGKAmrV4uQS0Y4fM6WlljzC0NaB ls1zUlsZ4FmxDA94LbK0I+iwMckHWpPKXa2m3Jdm/KhR3t/EyFQCHSrKaGdPXem8Fu Uzv/8nW10Bmq0WTwZmYIUbm/OJhO07FbiNaJBPPyK3A3b4FOg3BWGIuHK0RUyWlKX2 n2Et8WmKsiBN0zMcewDD3on1T1H75orxWg4W21/jYV7vYPnkbAhK6cqlAhnvn6/npA /ZUVt9dEGGdOZb2P2TkpkW+BEJGRm9SzDVU4XNmqpCvAbvnM7MX34p5mkYX0O4KUhf HJLC2UptOXqbQ== From: "Rob Herring (Arm)" Date: Tue, 08 Sep 2026 17:04:40 -0500 Subject: [PATCH v3 03/22] accel: ethosu: Fix probe error cleanup 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-v3-3-490fe215286f@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 Once the job scheduler has been initialized, failures from ethosu_init() or drm_dev_register() return from probe without tearing it down. The registration failure also leaves the SRAM-pool allocation in use, because the platform remove callback is not called after a failed probe. Unwind the initialized resources on both paths. Also do not call drm_sched_fini() after a failed drm_sched_init(): the scheduler initializer already unwinds its partial setup, while drm_sched_fini() requires a successfully initialized scheduler. Fixes: 5a5e9c0228e6 ("accel: Add Arm Ethos-U NPU driver") Cc: stable@vger.kernel.org Assisted-by: LLM Signed-off-by: Rob Herring (Arm) --- v2: - Adjust for previous patch reworking runtime-PM suspend --- drivers/accel/ethosu/ethosu_drv.c | 13 ++++++++++++- drivers/accel/ethosu/ethosu_job.c | 6 +----- 2 files changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/accel/ethosu/ethosu_drv.c b/drivers/accel/ethosu/ethosu_drv.c index 1f6fb5d18cf2..2c8d735767b2 100644 --- a/drivers/accel/ethosu/ethosu_drv.c +++ b/drivers/accel/ethosu/ethosu_drv.c @@ -375,9 +375,20 @@ static int ethosu_probe(struct platform_device *pdev) ret = ethosu_init(ethosudev); if (ret) - return ret; + goto err_job_fini; ret = drm_dev_register(ðosudev->base, 0); + if (ret) + goto err_sram_free; + + return 0; + +err_sram_free: + if (ethosudev->sram) + gen_pool_free(ethosudev->srampool, (unsigned long)ethosudev->sram, + ethosudev->npu_info.sram_size); +err_job_fini: + ethosu_job_fini(ethosudev); return ret; } diff --git a/drivers/accel/ethosu/ethosu_job.c b/drivers/accel/ethosu/ethosu_job.c index 8dce74db0cb4..ec65305e0cd7 100644 --- a/drivers/accel/ethosu/ethosu_job.c +++ b/drivers/accel/ethosu/ethosu_job.c @@ -355,14 +355,10 @@ int ethosu_job_init(struct ethosu_device *edev) ret = drm_sched_init(&edev->sched, &args); if (ret) { dev_err(dev, "Failed to create scheduler: %d\n", ret); - goto err_sched; + return ret; } return 0; - -err_sched: - drm_sched_fini(&edev->sched); - return ret; } void ethosu_job_fini(struct ethosu_device *dev) -- 2.53.0