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{
    "id": 9404,
    "url": "https://patchwork.libcamera.org/api/patches/9404/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/9404/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/projects/1/?format=api",
        "name": "libcamera",
        "link_name": "libcamera",
        "list_id": "libcamera_core",
        "list_email": "libcamera-devel@lists.libcamera.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": ""
    },
    "msgid": "<20200827082038.40758-2-jacopo@jmondi.org>",
    "date": "2020-08-27T08:20:36",
    "name": "[libcamera-devel,1/3] libcamera: raspberrypi: dma_heaps: Add open/close",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "a8ba27273709d25699f6bc4f08e240e18e093e54",
    "submitter": {
        "id": 3,
        "url": "https://patchwork.libcamera.org/api/people/3/?format=api",
        "name": "Jacopo Mondi",
        "email": "jacopo@jmondi.org"
    },
    "delegate": {
        "id": 15,
        "url": "https://patchwork.libcamera.org/api/users/15/?format=api",
        "username": "jmondi",
        "first_name": "Jacopo",
        "last_name": "Mondi",
        "email": "jacopo@jmondi.org"
    },
    "mbox": "https://patchwork.libcamera.org/patch/9404/mbox/",
    "series": [
        {
            "id": 1245,
            "url": "https://patchwork.libcamera.org/api/series/1245/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=1245",
            "date": "2020-08-27T08:20:35",
            "name": "libcamera: raspberrypi: Fail early when opening dma heaps",
            "version": 1,
            "mbox": "https://patchwork.libcamera.org/series/1245/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/9404/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/9404/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>",
        "X-Original-To": "parsemail@patchwork.libcamera.org",
        "Delivered-To": "parsemail@patchwork.libcamera.org",
        "Received": [
            "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 55191BF01C\n\tfor <parsemail@patchwork.libcamera.org>;\n\tThu, 27 Aug 2020 08:17:01 +0000 (UTC)",
            "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 359A8628F7;\n\tThu, 27 Aug 2020 10:17:00 +0200 (CEST)",
            "from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net\n\t[217.70.183.193])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 2322D60379\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 27 Aug 2020 10:16:59 +0200 (CEST)",
            "from uno.lan (93-34-118-233.ip49.fastwebnet.it [93.34.118.233])\n\t(Authenticated sender: jacopo@jmondi.org)\n\tby relay1-d.mail.gandi.net (Postfix) with ESMTPSA id 63C36240006;\n\tThu, 27 Aug 2020 08:16:58 +0000 (UTC)"
        ],
        "X-Originating-IP": "93.34.118.233",
        "From": "Jacopo Mondi <jacopo@jmondi.org>",
        "To": "libcamera-devel@lists.libcamera.org,\n\tDave Stevenson <dave.stevenson@raspberrypi.com>,\n\tNaushir Patuck <naush@raspberrypi.com>",
        "Date": "Thu, 27 Aug 2020 10:20:36 +0200",
        "Message-Id": "<20200827082038.40758-2-jacopo@jmondi.org>",
        "X-Mailer": "git-send-email 2.28.0",
        "In-Reply-To": "<20200827082038.40758-1-jacopo@jmondi.org>",
        "References": "<20200827082038.40758-1-jacopo@jmondi.org>",
        "MIME-Version": "1.0",
        "Subject": "[libcamera-devel] [PATCH 1/3] libcamera: raspberrypi: dma_heaps:\n\tAdd open/close",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
        "X-Mailman-Version": "2.1.29",
        "Precedence": "list",
        "List-Id": "<libcamera-devel.lists.libcamera.org>",
        "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>",
        "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>",
        "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>",
        "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>",
        "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>",
        "Content-Type": "text/plain; charset=\"us-ascii\"",
        "Content-Transfer-Encoding": "7bit",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "The dma_heaps device is opened in the class constructor, making\nit impossible (or rather ugly) to catch errors before the allocator gets\nactually used.\n\nProvide an open() and a close() method to allow users to catch errors\nearlier.\n\nSigned-off-by: Jacopo Mondi <jacopo@jmondi.org>\n---\n .../pipeline/raspberrypi/dma_heaps.cpp        | 22 ++++++++++++++++---\n .../pipeline/raspberrypi/dma_heaps.h          |  2 ++\n 2 files changed, 21 insertions(+), 3 deletions(-)",
    "diff": "diff --git a/src/libcamera/pipeline/raspberrypi/dma_heaps.cpp b/src/libcamera/pipeline/raspberrypi/dma_heaps.cpp\nindex 6769c04640f1..739f05d3d4d8 100644\n--- a/src/libcamera/pipeline/raspberrypi/dma_heaps.cpp\n+++ b/src/libcamera/pipeline/raspberrypi/dma_heaps.cpp\n@@ -32,20 +32,36 @@ LOG_DECLARE_CATEGORY(RPI)\n namespace RPi {\n \n DmaHeap::DmaHeap()\n+\t: dmaHeapHandle_(-1)\n+{\n+}\n+\n+DmaHeap::~DmaHeap()\n+{\n+\tclose();\n+}\n+\n+int DmaHeap::open()\n {\n \tdmaHeapHandle_ = ::open(DMA_HEAP_CMA_NAME, O_RDWR, 0);\n \tif (dmaHeapHandle_ == -1) {\n \t\tdmaHeapHandle_ = ::open(DMA_HEAP_CMA_ALT_NAME, O_RDWR, 0);\n \t\tif (dmaHeapHandle_ == -1) {\n \t\t\tLOG(RPI, Error) << \"Could not open dmaHeap device\";\n+\t\t\treturn dmaHeapHandle_;\n \t\t}\n \t}\n+\n+\treturn 0;\n }\n \n-DmaHeap::~DmaHeap()\n+void DmaHeap::close()\n {\n-\tif (dmaHeapHandle_)\n-\t\t::close(dmaHeapHandle_);\n+\tif (dmaHeapHandle_ < 0)\n+\t\treturn;\n+\n+\t::close(dmaHeapHandle_);\n+\tdmaHeapHandle_ = -1;\n }\n \n FileDescriptor DmaHeap::alloc(const char *name, std::size_t size)\ndiff --git a/src/libcamera/pipeline/raspberrypi/dma_heaps.h b/src/libcamera/pipeline/raspberrypi/dma_heaps.h\nindex ae6be1135f17..3e17993097ef 100644\n--- a/src/libcamera/pipeline/raspberrypi/dma_heaps.h\n+++ b/src/libcamera/pipeline/raspberrypi/dma_heaps.h\n@@ -18,6 +18,8 @@ class DmaHeap\n public:\n \tDmaHeap();\n \t~DmaHeap();\n+\tint open();\n+\tvoid close();\n \tFileDescriptor alloc(const char *name, std::size_t size);\n \n private:\n",
    "prefixes": [
        "libcamera-devel",
        "1/3"
    ]
}