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| author | Sang-Heon Jeon <ekffu200098@gmail.com> | 2026-08-24 01:18:14 +0900 |
|---|---|---|
| committer | Julia Lawall <Julia.Lawall@inria.fr> | 2026-08-23 22:12:11 +0200 |
| commit | 2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c (patch) | |
| tree | dcc4da1d99f17541c5590ac63c77da4bf372a4ab /drivers/char/tpm/tpm-dev.c | |
| download | linux-stable-2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c.tar.gz linux-stable-2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c.zip | |
coccinelle: alloc_cast: drop removed allocatorsgrafted
- pci_alloc_consistent() and pci_zalloc_consistent() were removed by
commit 7968778914e5
("PCI: Remove the deprecated "pci-dma-compat.h" API")
- kmem_alloc() was removed by commit f078d4ea8276
("xfs: convert kmem_alloc() to kmalloc()")
- kmem_zalloc() was removed by commit 10634530f7ba
("xfs: convert kmem_zalloc() to kzalloc()")
- kmem_zone_alloc() and kmem_zone_zalloc() were removed by commit
bae633a4a283 ("xfs: remove xfs_zone_{alloc,zalloc} helpers")
So drop them from the rules.
No functional change.
Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Diffstat (limited to 'drivers/char/tpm/tpm-dev.c')
| -rw-r--r-- | drivers/char/tpm/tpm-dev.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm-dev.c b/drivers/char/tpm/tpm-dev.c new file mode 100644 index 000000000..74488f0a7 --- /dev/null +++ b/drivers/char/tpm/tpm-dev.c @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2004 IBM Corporation + * Authors: + * Leendert van Doorn <leendert@watson.ibm.com> + * Dave Safford <safford@watson.ibm.com> + * Reiner Sailer <sailer@watson.ibm.com> + * Kylene Hall <kjhall@us.ibm.com> + * + * Copyright (C) 2013 Obsidian Research Corp + * Jason Gunthorpe <jgunthorpe@obsidianresearch.com> + * + * Device file system interface to the TPM + */ +#include <linux/slab.h> +#include "tpm-dev.h" + +static int tpm_open(struct inode *inode, struct file *file) +{ + struct tpm_chip *chip; + struct file_priv *priv; + + chip = container_of(inode->i_cdev, struct tpm_chip, cdev); + + /* It's assured that the chip will be opened just once, + * by the check of is_open variable, which is protected + * by driver_lock. */ + if (test_and_set_bit(0, &chip->is_open)) { + dev_dbg(&chip->dev, "Another process owns this TPM\n"); + return -EBUSY; + } + + priv = kzalloc_obj(*priv); + if (priv == NULL) + goto out; + + tpm_common_open(file, chip, priv, NULL); + + return nonseekable_open(inode, file); + + out: + clear_bit(0, &chip->is_open); + return -ENOMEM; +} + +/* + * Called on file close + */ +static int tpm_release(struct inode *inode, struct file *file) +{ + struct file_priv *priv = file->private_data; + + tpm_common_release(file, priv); + clear_bit(0, &priv->chip->is_open); + kfree(priv); + + return 0; +} + +const struct file_operations tpm_fops = { + .owner = THIS_MODULE, + .open = tpm_open, + .read = tpm_common_read, + .write = tpm_common_write, + .poll = tpm_common_poll, + .release = tpm_release, +}; |
