From patchwork Sun Sep 8 12:11:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sui Jingfeng X-Patchwork-Id: 13795426 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5306FE6FE49 for ; Sun, 8 Sep 2024 12:11:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C334C10E252; Sun, 8 Sep 2024 12:11:39 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=linux.dev header.i=@linux.dev header.b="xfcRh4PX"; dkim-atps=neutral Received: from out-188.mta1.migadu.com (out-188.mta1.migadu.com [95.215.58.188]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6472910E252 for ; Sun, 8 Sep 2024 12:11:38 +0000 (UTC) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1725797497; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Zp0+gJ8zC1+4EYinnSYnf2yVlAatGRkLD73KizOpAxQ=; b=xfcRh4PXGDmceJejZcEs7Ib47DGRqGTT4t4Ajb1hGGUQpRNyB/xfjSS4ZfaVSOT8j4vtvC pRYvBgAG3/JnOxqT2R2zFMwlrECbvo7x2QdO/c9q9gmWQL3WN0Hctw0Tjwk7GOr8QakUQC siPWWONvvPzl4zJXWXqbzAo8qgCoPFE= From: Sui Jingfeng To: Lucas Stach Cc: Christian Gmeiner , Russell King , David Airlie , Daniel Vetter , Thomas Zimmermann , Maxime Ripard , dri-devel@lists.freedesktop.org, etnaviv@lists.freedesktop.org, linux-kernel@vger.kernel.org, Sui Jingfeng , Christian Gmeiner Subject: [PATCH v2 4/5] drm/etnaviv: Fix missing mutex_destroy() Date: Sun, 8 Sep 2024 20:11:06 +0800 Message-ID: <20240908121107.328740-4-sui.jingfeng@linux.dev> In-Reply-To: <20240908121107.328740-1-sui.jingfeng@linux.dev> References: <20240908121107.328740-1-sui.jingfeng@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Currently, the calling of mutex_destroy() is ignored on error handling code path. It is safe for now, since mutex_destroy() actually does nothing in non-debug builds. But the mutex_destroy() is used to mark the mutex uninitialized on debug builds, and any subsequent use of the mutex is forbidden. It also could lead to problems if mutex_destroy() gets extended, add missing mutex_destroy() to eliminate potential concerns. Reviewed-by: Christian Gmeiner Signed-off-by: Sui Jingfeng --- v2: Pick up tags and fix one more missing mutex_destroy() drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c | 2 ++ drivers/gpu/drm/etnaviv/etnaviv_drv.c | 1 + drivers/gpu/drm/etnaviv/etnaviv_gem.c | 1 + drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 5 +++++ drivers/gpu/drm/etnaviv/etnaviv_mmu.c | 2 +- 5 files changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c b/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c index 721d633aece9..66a407f1b3ee 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c @@ -55,6 +55,7 @@ etnaviv_cmdbuf_suballoc_new(struct device *dev) return suballoc; free_suballoc: + mutex_destroy(&suballoc->lock); kfree(suballoc); return ERR_PTR(ret); @@ -79,6 +80,7 @@ void etnaviv_cmdbuf_suballoc_destroy(struct etnaviv_cmdbuf_suballoc *suballoc) { dma_free_wc(suballoc->dev, SUBALLOC_SIZE, suballoc->vaddr, suballoc->paddr); + mutex_destroy(&suballoc->lock); kfree(suballoc); } diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c index 6500f3999c5f..7844cd961a29 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c @@ -564,6 +564,7 @@ static int etnaviv_bind(struct device *dev) out_destroy_suballoc: etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc); out_free_priv: + mutex_destroy(&priv->gem_lock); kfree(priv); out_put: drm_dev_put(drm); diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c index 4ce3d2ea7767..4247a10f8d4f 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c @@ -514,6 +514,7 @@ void etnaviv_gem_free_object(struct drm_gem_object *obj) etnaviv_obj->ops->release(etnaviv_obj); drm_gem_object_release(obj); + mutex_destroy(&etnaviv_obj->lock); kfree(etnaviv_obj); } diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c index 7c7f97793ddd..3c869970cba4 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -1929,8 +1929,13 @@ static int etnaviv_gpu_platform_probe(struct platform_device *pdev) static void etnaviv_gpu_platform_remove(struct platform_device *pdev) { + struct etnaviv_gpu *gpu = dev_get_drvdata(&pdev->dev); + component_del(&pdev->dev, &gpu_ops); pm_runtime_disable(&pdev->dev); + + mutex_destroy(&gpu->lock); + mutex_destroy(&gpu->sched_lock); } static int etnaviv_gpu_rpm_suspend(struct device *dev) diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c index 1661d589bf3e..02d9408d41bc 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c @@ -358,7 +358,7 @@ static void etnaviv_iommu_context_free(struct kref *kref) container_of(kref, struct etnaviv_iommu_context, refcount); etnaviv_cmdbuf_suballoc_unmap(context, &context->cmdbuf_mapping); - + mutex_destroy(&context->lock); context->global->ops->free(context); } void etnaviv_iommu_context_put(struct etnaviv_iommu_context *context)