linux-kernel - [PATCH 01/10] tee: allow a driver to allocate a tee

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Message-ID: <20241202-qcom-tee-using-tee-ss-without-mem-obj-v1-1-f502ef01e016@quicinc.com>
Date: Mon, 2 Dec 2024 20:19:17 -0800
From: Amirreza Zarrabi <quic_azarrabi@...cinc.com>
To: Jens Wiklander <jens.wiklander@...aro.org>,
        Sumit Garg
	<sumit.garg@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        "Konrad
 Dybcio" <konradybcio@...nel.org>,
        Rob Herring <robh@...nel.org>,
        "Krzysztof
 Kozlowski" <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        "Bartosz
 Golaszewski" <bartosz.golaszewski@...aro.org>,
        Srinivas Kandagatla
	<srinivas.kandagatla@...aro.org>
CC: <linux-arm-msm@...r.kernel.org>, <op-tee@...ts.trustedfirmware.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-doc@...r.kernel.org>,
        Amirreza Zarrabi <quic_azarrabi@...cinc.com>
Subject: [PATCH 01/10] tee: allow a driver to allocate a tee_device without
 a pool

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 some other way. Although this is mentioned in the
documentation for tee_device_alloc(), it is not handled correctly.

Signed-off-by: Amirreza Zarrabi <quic_azarrabi@...cinc.com>
---
 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 d113679b1e2d..24edce4cdbaa 100644
--- a/drivers/tee/tee_core.c
+++ b/drivers/tee/tee_core.c
@@ -888,7 +888,7 @@ 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