tee: export teedev_open() and teedev_close_context()

commit 1e2c3ef0496e72ba9001da5fd1b7ed56ccb30597 upstream.

Exports the two functions teedev_open() and teedev_close_context() in
order to make it easier to create a driver internal struct tee_context.

Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
index 85e0cef9e917e71106e5be5e7e7b20e5b0ff4e97..a7ccd4d2bd10629cb347b45b0a41e12c165e9602 100644 (file)
--- a/drivers/tee/tee_core.c
+++ b/drivers/tee/tee_core.c
@@ -28,7 +28,7 @@ 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;
@@ -56,6 +56,7 @@ 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)
 {
@@ -82,13 +83,14 @@ 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 e08ace76eba6a32e20e3a72ab525f102f8835e7a..8868337e9445b6dc68d27384202bf4a9933d9cc3 100644 (file)
--- a/include/linux/tee_drv.h
+++ b/include/linux/tee_drv.h
@@ -579,4 +579,18 @@ 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*/