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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-742a970954asm18037286b3a.46.2025.05.26.23.57.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 May 2025 23:57:15 -0700 (PDT) From: Amirreza Zarrabi Date: Mon, 26 May 2025 23:56:46 -0700 Subject: [PATCH v5 01/12] tee: allow a driver to allocate a tee_device without a pool Precedence: bulk X-Mailing-List: linux-doc@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: <20250526-qcom-tee-using-tee-ss-without-mem-obj-v5-1-024e3221b0b9@oss.qualcomm.com> References: <20250526-qcom-tee-using-tee-ss-without-mem-obj-v5-0-024e3221b0b9@oss.qualcomm.com> In-Reply-To: <20250526-qcom-tee-using-tee-ss-without-mem-obj-v5-0-024e3221b0b9@oss.qualcomm.com> To: Jens Wiklander , Sumit Garg , Bjorn Andersson , Konrad Dybcio , Bartosz Golaszewski , Apurupa Pattapu , Kees Cook , "Gustavo A. R. Silva" , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= Cc: Harshal Dev , linux-arm-msm@vger.kernel.org, op-tee@lists.trustedfirmware.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-doc@vger.kernel.org, Amirreza Zarrabi , Sumit Garg X-Mailer: b4 0.13.0 X-Proofpoint-GUID: E5PUp-2uY_ZhGJ2e9OSsXRPoM-lOtBz6 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTI3MDA1NCBTYWx0ZWRfX769J5pa2iE2I HN7iIhnyRjyAQAIcz5nEmY/zAGcZz0mRMcIgzGtZG6MOvbFItMgTXdmsarO4GeV4TGa+Db5GImX DU79RyftTEhx54a0Zhr6dFJYrBGOkVQ4/AOfXj3urFRbkM9dZZUWYNJr7VqowVUdedOGienpOaO e2PzI5xIcdfDD8iKMmHb8FXxgvClLJq1N97jp2xoJMddjLXkLDWoI/yvq3lsLf/hHrhTEXaFTiQ wiUI5Bhy0I/8vRpKh1JL1qAV2GcHSpOb4A6odpOVzgCtVKGg9XJINl7ptxbCwjyBeyPS0laRCUE r6pYHKbni5T2TmpIHYC1cvse2zxLI9NDtMLTDRDFgHRgXE219/jWONkv5W+nlbhV88SfTeuwxfG qU2Q/pNdsGVdbqIAiqvc+J+KuIeUzz9MbAH1tF8EELocbIAbv3aqPDQumYKurc5CGeZH07gT X-Proofpoint-ORIG-GUID: E5PUp-2uY_ZhGJ2e9OSsXRPoM-lOtBz6 X-Authority-Analysis: v=2.4 cv=Mq5S63ae c=1 sm=1 tr=0 ts=6835624d cx=c_pps a=m5Vt/hrsBiPMCU0y4gIsQw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=dt9VzEwgFbYA:10 a=EUspDBNiAAAA:8 a=1atmPuGhRQHGwWkYLZIA:9 a=QEXdDO2ut3YA:10 a=IoOABgeZipijB_acs4fv:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-05-27_03,2025-05-26_02,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 phishscore=0 suspectscore=0 mlxscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 adultscore=0 mlxlogscore=999 bulkscore=0 impostorscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505160000 definitions=main-2505270054 A TEE driver doesn't always need to provide a pool if it doesn't support memory sharing ioctls and can allocate memory for TEE messages in another way. Although this is mentioned in the documentation for tee_device_alloc(), it is not handled correctly. Reviewed-by: Sumit Garg Signed-off-by: Amirreza Zarrabi --- drivers/tee/tee_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c index acc7998758ad..133447f25065 100644 --- a/drivers/tee/tee_core.c +++ b/drivers/tee/tee_core.c @@ -889,7 +889,7 @@ struct tee_device *tee_device_alloc(const struct tee_desc *teedesc, if (!teedesc || !teedesc->name || !teedesc->ops || !teedesc->ops->get_version || !teedesc->ops->open || - !teedesc->ops->release || !pool) + !teedesc->ops->release) return ERR_PTR(-EINVAL); teedev = kzalloc(sizeof(*teedev), GFP_KERNEL); -- 2.34.1