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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (C) 2017 James.Bottomley@HansenPartnership.com4 */5#include <linux/slab.h>6#include "tpm-dev.h"7 8struct tpmrm_priv {9 struct file_priv priv;10 struct tpm_space space;11};12 13static int tpmrm_open(struct inode *inode, struct file *file)14{15 struct tpm_chip *chip;16 struct tpmrm_priv *priv;17 int rc;18 19 chip = container_of(inode->i_cdev, struct tpm_chip, cdevs);20 priv = kzalloc(sizeof(*priv), GFP_KERNEL);21 if (priv == NULL)22 return -ENOMEM;23 24 rc = tpm2_init_space(&priv->space, TPM2_SPACE_BUFFER_SIZE);25 if (rc) {26 kfree(priv);27 return -ENOMEM;28 }29 30 tpm_common_open(file, chip, &priv->priv, &priv->space);31 32 return 0;33}34 35static int tpmrm_release(struct inode *inode, struct file *file)36{37 struct file_priv *fpriv = file->private_data;38 struct tpmrm_priv *priv = container_of(fpriv, struct tpmrm_priv, priv);39 40 tpm_common_release(file, fpriv);41 tpm2_del_space(fpriv->chip, &priv->space);42 kfree(priv);43 44 return 0;45}46 47const struct file_operations tpmrm_fops = {48 .owner = THIS_MODULE,49 .open = tpmrm_open,50 .read = tpm_common_read,51 .write = tpm_common_write,52 .poll = tpm_common_poll,53 .release = tpmrm_release,54};55