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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b54ad5e168fsm690960a12.13.2025.09.11.21.07.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Sep 2025 21:07:50 -0700 (PDT) From: Amirreza Zarrabi Date: Thu, 11 Sep 2025 21:07:42 -0700 Subject: [PATCH v12 03/11] tee: allow a driver to allocate a tee_device without a pool 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: <20250911-qcom-tee-using-tee-ss-without-mem-obj-v12-3-17f07a942b8d@oss.qualcomm.com> References: <20250911-qcom-tee-using-tee-ss-without-mem-obj-v12-0-17f07a942b8d@oss.qualcomm.com> In-Reply-To: <20250911-qcom-tee-using-tee-ss-without-mem-obj-v12-0-17f07a942b8d@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-ORIG-GUID: -c-4M2ChTA3g7JkqHv37RHANGC4Vdjul X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTA2MDAzNSBTYWx0ZWRfXygsjZgKomz7+ NGmFirO6ncG4rW62bGeltuFJHLwfGNZSUW8eAUs7DwddW/gEo5a9We30yYVH4ACmsBYpRJQhFl3 3/yOM6Ce5ELXR7X2VeNnQ48ppOAK5T20J2jI6D0mh7v4qeASup+dhTkGWD9cyuYM9gJDXgTw1Yr NeZdDJ8oQCMorIjskgUp4JYo/FHFcp4JW9nREN0eOLSuRUomNQkuf5lz7A8iRsixgfKIkfwH/RZ zZVLtUOr6I/Qkj5z1JbHb0w05w5tvVZv0nMcZyY2v4CC/E44lKl+qXrLjoWzqznZL0mgE0Q6laI Xq5ukrtn8zyLgGeYLO2Gpn6qo90uQsxAdbKIz5qDb8B2Xkqqjwf+c6xlsdMVBzuY4/cSQzRCFua p6JyqgUr X-Proofpoint-GUID: -c-4M2ChTA3g7JkqHv37RHANGC4Vdjul X-Authority-Analysis: v=2.4 cv=N8UpF39B c=1 sm=1 tr=0 ts=68c39c98 cx=c_pps a=oF/VQ+ItUULfLr/lQ2/icg==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=yJojWOMRYYMA:10 a=EUspDBNiAAAA:8 a=1atmPuGhRQHGwWkYLZIA:9 a=QEXdDO2ut3YA:10 a=3WC7DwWrALyhR5TkjVHa:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-12_01,2025-09-11_02,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 spamscore=0 malwarescore=0 clxscore=1015 bulkscore=0 suspectscore=0 priorityscore=1501 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509060035 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 807317d7b3c5..9fa042d80622 100644 --- a/drivers/tee/tee_core.c +++ b/drivers/tee/tee_core.c @@ -926,7 +926,7 @@ struct tee_device *tee_device_alloc(const struct tee_de= sc *teedesc, =20 if (!teedesc || !teedesc->name || !teedesc->ops || !teedesc->ops->get_version || !teedesc->ops->open || - !teedesc->ops->release || !pool) + !teedesc->ops->release) return ERR_PTR(-EINVAL); =20 teedev =3D kzalloc(sizeof(*teedev), GFP_KERNEL); --=20 2.34.1