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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id ne13-20020a056214424d00b006815cf9a644sm1020720qvb.55.2024.01.15.06.47.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Jan 2024 06:47:35 -0800 (PST) From: Philipp Stanner To: Jonathan Corbet , Hans de Goede , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Bjorn Helgaas , Philipp Stanner , Sam Ravnborg , dakr@redhat.com Subject: [PATCH 10/10] drm/vboxvideo: fix mapping leaks Date: Mon, 15 Jan 2024 15:46:21 +0100 Message-ID: <20240115144655.32046-12-pstanner@redhat.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240115144655.32046-2-pstanner@redhat.com> References: <20240115144655.32046-2-pstanner@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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: , Cc: linux-pci@vger.kernel.org, stable@kernel.vger.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" When the managed PCI-API was introduced to this driver, it was falsly assumed that initializing the device with pcim_enable_device() instead of pci_enable_device() will make all PCI functions managed. This is wrong and was caused by the quite confusing devres API for PCI: The function pci_iomap_range() is never managed. Replace pci_iomap_range() with the actually managed function pcim_iomap_range(). Additionally, add a call to pcim_request_region() to ensure exclusive access to BAR 0. CC: # v5.10+ Fixes: 8558de401b5f ("drm/vboxvideo: use managed pci functions") Signed-off-by: Philipp Stanner --- drivers/gpu/drm/vboxvideo/vbox_main.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/vboxvideo/vbox_main.c b/drivers/gpu/drm/vboxvideo/vbox_main.c index 42c2d8a99509..7f686a0190e6 100644 --- a/drivers/gpu/drm/vboxvideo/vbox_main.c +++ b/drivers/gpu/drm/vboxvideo/vbox_main.c @@ -42,12 +42,11 @@ static int vbox_accel_init(struct vbox_private *vbox) /* Take a command buffer for each screen from the end of usable VRAM. */ vbox->available_vram_size -= vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE; - vbox->vbva_buffers = pci_iomap_range(pdev, 0, - vbox->available_vram_size, - vbox->num_crtcs * - VBVA_MIN_BUFFER_SIZE); - if (!vbox->vbva_buffers) - return -ENOMEM; + vbox->vbva_buffers = pcim_iomap_range( + pdev, 0, vbox->available_vram_size, + vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE); + if (IS_ERR(vbox->vbva_buffers)) + return PTR_ERR(vbox->vbva_buffers); for (i = 0; i < vbox->num_crtcs; ++i) { vbva_setup_buffer_context(&vbox->vbva_info[i], @@ -115,12 +114,15 @@ int vbox_hw_init(struct vbox_private *vbox) DRM_INFO("VRAM %08x\n", vbox->full_vram_size); + ret = pcim_request_region(pdev, 0, "vboxvideo"); + if (ret) + return ret; + /* Map guest-heap at end of vram */ - vbox->guest_heap = - pci_iomap_range(pdev, 0, GUEST_HEAP_OFFSET(vbox), - GUEST_HEAP_SIZE); - if (!vbox->guest_heap) - return -ENOMEM; + vbox->guest_heap = pcim_iomap_range(pdev, 0, + GUEST_HEAP_OFFSET(vbox), GUEST_HEAP_SIZE); + if (IS_ERR(vbox->guest_heap)) + return PTR_ERR(vbox->guest_heap); /* Create guest-heap mem-pool use 2^4 = 16 byte chunks */ vbox->guest_pool = devm_gen_pool_create(vbox->ddev.dev, 4, -1,