Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2017 James.Bottomley@HansenPartnership.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include "tpm-dev.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) struct tpmrm_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 	struct file_priv priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	struct tpm_space space;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) static int tpmrm_open(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	struct tpm_chip *chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	struct tpmrm_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	chip = container_of(inode->i_cdev, struct tpm_chip, cdevs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	if (priv == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	rc = tpm2_init_space(&priv->space, TPM2_SPACE_BUFFER_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		kfree(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	tpm_common_open(file, chip, &priv->priv, &priv->space);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static int tpmrm_release(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	struct file_priv *fpriv = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	struct tpmrm_priv *priv = container_of(fpriv, struct tpmrm_priv, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	tpm_common_release(file, fpriv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	tpm2_del_space(fpriv->chip, &priv->space);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	kfree(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) const struct file_operations tpmrm_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	.owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	.llseek = no_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	.open = tpmrm_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	.read = tpm_common_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	.write = tpm_common_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	.poll = tpm_common_poll,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	.release = tpmrm_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) };