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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-241e8975c89sm308781585ad.96.2025.08.12.17.36.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Aug 2025 17:36:59 -0700 (PDT) From: Amirreza Zarrabi Date: Tue, 12 Aug 2025 17:35:30 -0700 Subject: [PATCH v7 01/11] 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: <20250812-qcom-tee-using-tee-ss-without-mem-obj-v7-1-ce7a1a774803@oss.qualcomm.com> References: <20250812-qcom-tee-using-tee-ss-without-mem-obj-v7-0-ce7a1a774803@oss.qualcomm.com> In-Reply-To: <20250812-qcom-tee-using-tee-ss-without-mem-obj-v7-0-ce7a1a774803@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: TmMEM5UsEE-Ob2OW7YeqUj4cTMHS_pmS X-Proofpoint-ORIG-GUID: TmMEM5UsEE-Ob2OW7YeqUj4cTMHS_pmS X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODExMDA2OCBTYWx0ZWRfXyN7AmuY2rg9Q 4d3AdRh895HW8sFIYcbArrMCI56yqS8Mb7MLDKZ8uzRMuqGN3uGgxk9rzKZeu4/MeRQk50obIlE TInFfNQ3ObHklbCHYBqd5uXxkn1O/TEZCRpQDAqWQCyOLe7BUmk2bdmStNipUAhTs5D0luzRCyV 4KN6SUCMin/AiQ9Q4PBEfUj2yuWhp3stx/SRwNg9W5IeNPJ0XQwKSDXMbs1jyDsTtMyrtdL7Sw3 sRhnh2SzxJT+4Loshab3UBVNd0ltBqwIMw0Lu2duPvI8bvGgQnu9m4HAgFfbnBVPPc7jRM3Jn6F hPrwWVbJC/+tT/gFw73B6Xuzh9j4FcxYdo2ngflTLtiuopF+S4Ena0OVl6KopO/TC/mVNYaR3p6 /GgN1S4K X-Authority-Analysis: v=2.4 cv=YMafyQGx c=1 sm=1 tr=0 ts=689bde2e cx=c_pps a=Oh5Dbbf/trHjhBongsHeRQ==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=EUspDBNiAAAA:8 a=1atmPuGhRQHGwWkYLZIA:9 a=QEXdDO2ut3YA:10 a=_Vgx9l1VpLgwpw_dHYaR:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-12_08,2025-08-11_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1015 priorityscore=1501 spamscore=0 suspectscore=0 adultscore=0 impostorscore=0 malwarescore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508110068 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 944f913f8592..e47a68d337b4 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_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