From: Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com>
Date: Fri, 12 Sep 2025 04:07:42 +0000 (-0700)
Subject: tee: allow a driver to allocate a tee_device without a pool
X-Git-Tag: v6.17.8~673
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f8c3397788f636fed7ecdba74af4f4d2c4493e16;p=thirdparty%2Fkernel%2Fstable.git

tee: allow a driver to allocate a tee_device without a pool

[ Upstream commit 6dbcd5a9ab6cb6644e7d728521da1c9035ec7235 ]

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 <sumit.garg@oss.qualcomm.com>
Signed-off-by: Amirreza Zarrabi <amirreza.zarrabi@oss.qualcomm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
index acc7998758ad8..133447f250657 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);