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path: root/drivers/char/tpm/tpm_ftpm_tee.c
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Diffstat (limited to 'drivers/char/tpm/tpm_ftpm_tee.c')
-rw-r--r--drivers/char/tpm/tpm_ftpm_tee.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/char/tpm/tpm_ftpm_tee.c b/drivers/char/tpm/tpm_ftpm_tee.c
index 6640a14dbe48..22bf553ccf9d 100644
--- a/drivers/char/tpm/tpm_ftpm_tee.c
+++ b/drivers/char/tpm/tpm_ftpm_tee.c
@@ -32,7 +32,7 @@ static const uuid_t ftpm_ta_uuid =
0x82, 0xCB, 0x34, 0x3F, 0xB7, 0xF3, 0x78, 0x96);
/**
- * ftpm_tee_tpm_op_recv - retrieve fTPM response.
+ * ftpm_tee_tpm_op_recv() - retrieve fTPM response.
* @chip: the tpm_chip description as specified in driver/char/tpm/tpm.h.
* @buf: the buffer to store data.
* @count: the number of bytes to read.
@@ -61,7 +61,7 @@ static int ftpm_tee_tpm_op_recv(struct tpm_chip *chip, u8 *buf, size_t count)
}
/**
- * ftpm_tee_tpm_op_send - send TPM commands through the TEE shared memory.
+ * ftpm_tee_tpm_op_send() - send TPM commands through the TEE shared memory.
* @chip: the tpm_chip description as specified in driver/char/tpm/tpm.h
* @buf: the buffer to send.
* @len: the number of bytes to send.
@@ -208,7 +208,7 @@ static int ftpm_tee_match(struct tee_ioctl_version_data *ver, const void *data)
}
/**
- * ftpm_tee_probe - initialize the fTPM
+ * ftpm_tee_probe() - initialize the fTPM
* @pdev: the platform_device description.
*
* Return:
@@ -298,7 +298,7 @@ out_tee_session:
}
/**
- * ftpm_tee_remove - remove the TPM device
+ * ftpm_tee_remove() - remove the TPM device
* @pdev: the platform_device description.
*
* Return:
@@ -328,6 +328,19 @@ static int ftpm_tee_remove(struct platform_device *pdev)
return 0;
}
+/**
+ * ftpm_tee_shutdown() - shutdown the TPM device
+ * @pdev: the platform_device description.
+ */
+static void ftpm_tee_shutdown(struct platform_device *pdev)
+{
+ struct ftpm_tee_private *pvt_data = dev_get_drvdata(&pdev->dev);
+
+ tee_shm_free(pvt_data->shm);
+ tee_client_close_session(pvt_data->ctx, pvt_data->session);
+ tee_client_close_context(pvt_data->ctx);
+}
+
static const struct of_device_id of_ftpm_tee_ids[] = {
{ .compatible = "microsoft,ftpm" },
{ }
@@ -341,6 +354,7 @@ static struct platform_driver ftpm_tee_driver = {
},
.probe = ftpm_tee_probe,
.remove = ftpm_tee_remove,
+ .shutdown = ftpm_tee_shutdown,
};
module_platform_driver(ftpm_tee_driver);