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Tue, 10 Mar 2026 13:22:02 -0700 (PDT) Received: from hu-mojha-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-829f6dc2d0asm115262b3a.13.2026.03.10.13.21.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Mar 2026 13:22:02 -0700 (PDT) From: Mukesh Ojha Date: Wed, 11 Mar 2026 01:46:07 +0530 Subject: [PATCH v2 23/25] soc: qcom: smem: Add minidump platform device 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: quoted-printable Message-Id: <20260311-minidump-v2-v2-23-f91cedc6f99e@oss.qualcomm.com> References: <20260311-minidump-v2-v2-0-f91cedc6f99e@oss.qualcomm.com> In-Reply-To: <20260311-minidump-v2-v2-0-f91cedc6f99e@oss.qualcomm.com> To: Jonathan Corbet , Shuah Khan , Eugen Hristev , Arnd Bergmann , Dennis Zhou , Tejun Heo , Christoph Lameter , Andrew Morton , Thomas Gleixner , Peter Zijlstra , Anna-Maria Behnsen , Frederic Weisbecker , Ingo Molnar , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , David Hildenbrand , Lorenzo Stoakes , "Liam R. 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To determine which snippets should be collected, each snippet must be registered by the kernel into a shared memory table managed by the Qualcomm SMEM driver. To instantiate the minidump platform driver, register its data using platform_device_register_data(). The minidump driver will later probe the device and retrieve the required memory snippets from the memory inspection table (meminspect). Signed-off-by: Eugen Hristev Signed-off-by: Mukesh Ojha --- drivers/soc/qcom/smem.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c index d5c94b47f431..65d7b4d99677 100644 --- a/drivers/soc/qcom/smem.c +++ b/drivers/soc/qcom/smem.c @@ -270,6 +270,7 @@ struct smem_region { * @partitions: list of partitions of current processor/host * @item_count: max accepted item number * @socinfo: platform device pointer + * @mdinfo: minidump device pointer * @num_regions: number of @regions * @regions: list of the memory regions defining the shared memory */ @@ -280,6 +281,7 @@ struct qcom_smem { =20 u32 item_count; struct platform_device *socinfo; + struct platform_device *mdinfo; struct smem_ptable *ptable; struct smem_partition global_partition; struct smem_partition partitions[SMEM_HOST_COUNT]; @@ -1242,12 +1244,20 @@ static int qcom_smem_probe(struct platform_device *= pdev) if (IS_ERR(smem->socinfo)) dev_dbg(&pdev->dev, "failed to register socinfo device\n"); =20 + smem->mdinfo =3D platform_device_register_data(&pdev->dev, "qcom-minidump= ", + PLATFORM_DEVID_AUTO, NULL, + 0); + if (IS_ERR(smem->mdinfo)) + dev_err(&pdev->dev, "failed to register platform md device\n"); + return 0; } =20 static void qcom_smem_remove(struct platform_device *pdev) { platform_device_unregister(__smem->socinfo); + if (!IS_ERR(__smem->mdinfo)) + platform_device_unregister(__smem->mdinfo); =20 /* Set to -EPROBE_DEFER to signal unprobed state */ __smem =3D ERR_PTR(-EPROBE_DEFER); --=20 2.50.1