From: Jens Wiklander <jens.wiklander@linaro.org>
To: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
op-tee@lists.trustedfirmware.org, devicetree@vger.kernel.org,
linux-doc@vger.kernel.org
Cc: Jerome Forissier <jerome@forissier.org>,
Etienne Carriere <etienne.carriere@linaro.org>,
Sumit Garg <sumit.garg@linaro.org>,
Vincent Guittot <vincent.guittot@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Ard Biesheuvel <ardb@kernel.org>, Marc Zyngier <maz@kernel.org>,
Jens Wiklander <jens.wiklander@linaro.org>
Subject: [PATCH v6 4/6] tee: export teedev_open() and teedev_close_context()
Date: Wed, 6 Oct 2021 09:15:44 +0200 [thread overview]
Message-ID: <20211006071546.2540920-5-jens.wiklander@linaro.org> (raw)
In-Reply-To: <20211006071546.2540920-1-jens.wiklander@linaro.org>
Exports the two functions teedev_open() and teedev_close_context() in
order to make it easier to create a driver internal struct tee_context.
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
---
drivers/tee/tee_core.c | 6 ++++--
include/linux/tee_drv.h | 14 ++++++++++++++
2 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
index 85102d12d716..3fc426dad2df 100644
--- a/drivers/tee/tee_core.c
+++ b/drivers/tee/tee_core.c
@@ -43,7 +43,7 @@ static DEFINE_SPINLOCK(driver_lock);
static struct class *tee_class;
static dev_t tee_devt;
-static struct tee_context *teedev_open(struct tee_device *teedev)
+struct tee_context *teedev_open(struct tee_device *teedev)
{
int rc;
struct tee_context *ctx;
@@ -70,6 +70,7 @@ static struct tee_context *teedev_open(struct tee_device *teedev)
return ERR_PTR(rc);
}
+EXPORT_SYMBOL_GPL(teedev_open);
void teedev_ctx_get(struct tee_context *ctx)
{
@@ -96,13 +97,14 @@ void teedev_ctx_put(struct tee_context *ctx)
kref_put(&ctx->refcount, teedev_ctx_release);
}
-static void teedev_close_context(struct tee_context *ctx)
+void teedev_close_context(struct tee_context *ctx)
{
struct tee_device *teedev = ctx->teedev;
teedev_ctx_put(ctx);
tee_device_put(teedev);
}
+EXPORT_SYMBOL_GPL(teedev_close_context);
static int tee_open(struct inode *inode, struct file *filp)
{
diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
index 3ebfea0781f1..26f42c4cd7a1 100644
--- a/include/linux/tee_drv.h
+++ b/include/linux/tee_drv.h
@@ -582,4 +582,18 @@ struct tee_client_driver {
#define to_tee_client_driver(d) \
container_of(d, struct tee_client_driver, driver)
+/**
+ * teedev_open() - Open a struct tee_device
+ * @teedev: Device to open
+ *
+ * @return a pointer to struct tee_context on success or an ERR_PTR on failure.
+ */
+struct tee_context *teedev_open(struct tee_device *teedev);
+
+/**
+ * teedev_close_context() - closes a struct tee_context
+ * @ctx: The struct tee_context to close
+ */
+void teedev_close_context(struct tee_context *ctx);
+
#endif /*__TEE_DRV_H*/
--
2.31.1
next prev parent reply other threads:[~2021-10-06 7:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-06 7:15 [PATCH v6 0/6] Asynchronous notifications from secure world Jens Wiklander
2021-10-06 7:15 ` [PATCH v6 1/6] docs: staging/tee.rst: add a section on OP-TEE notifications Jens Wiklander
2021-10-13 7:02 ` Sumit Garg
2021-10-06 7:15 ` [PATCH v6 2/6] dt-bindings: arm: optee: add interrupt property Jens Wiklander
2021-10-13 7:08 ` Sumit Garg
2021-10-06 7:15 ` [PATCH v6 3/6] tee: fix put order in teedev_close_context() Jens Wiklander
2021-10-13 7:09 ` Sumit Garg
2021-10-06 7:15 ` Jens Wiklander [this message]
2021-10-13 7:09 ` [PATCH v6 4/6] tee: export teedev_open() and teedev_close_context() Sumit Garg
2021-10-06 7:15 ` [PATCH v6 5/6] optee: separate notification functions Jens Wiklander
2021-10-13 7:15 ` Sumit Garg
2021-10-13 13:42 ` Jens Wiklander
2021-10-06 7:15 ` [PATCH v6 6/6] optee: add asynchronous notifications Jens Wiklander
2021-10-13 8:07 ` Sumit Garg
2021-10-14 5:42 ` Jens Wiklander
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211006071546.2540920-5-jens.wiklander@linaro.org \
--to=jens.wiklander@linaro.org \
--cc=ardb@kernel.org \
--cc=corbet@lwn.net \
--cc=devicetree@vger.kernel.org \
--cc=etienne.carriere@linaro.org \
--cc=jerome@forissier.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maz@kernel.org \
--cc=op-tee@lists.trustedfirmware.org \
--cc=robh+dt@kernel.org \
--cc=sumit.garg@linaro.org \
--cc=vincent.guittot@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).