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tee: export teedev_open() and teedev_close_context()

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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>
This commit is contained in:
Jens Wiklander 2021-10-04 16:11:52 +02:00 committed by Greg Kroah-Hartman
parent bae7fc6f0d
commit eb35461384
2 changed files with 18 additions and 2 deletions
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6
drivers/tee/tee_core.c
View File

@ -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)
{

14
include/linux/tee_drv.h
View File

@ -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*/