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 acc7998758ad8431655077e2645e4b9ac4eb47ba..133447f250657f4f1b675c53eaa5432d08eae6d0 100644 (file)
--- 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);