diff options
Diffstat (limited to 'drivers/char/tpm/tpm-interface.c')
| -rw-r--r-- | drivers/char/tpm/tpm-interface.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index e2af28fd63cb..b6f6b17392fd 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -997,6 +997,35 @@ int tpm_get_random(u32 chip_num, u8 *out, size_t max) } EXPORT_SYMBOL_GPL(tpm_get_random); +static int __init tpm_init(void) +{ + int rc; + + tpm_class = class_create(THIS_MODULE, "tpm"); + if (IS_ERR(tpm_class)) { + pr_err("couldn't create tpm class\n"); + return PTR_ERR(tpm_class); + } + + rc = alloc_chrdev_region(&tpm_devt, 0, TPM_NUM_DEVICES, "tpm"); + if (rc < 0) { + pr_err("tpm: failed to allocate char dev region\n"); + class_destroy(tpm_class); + return rc; + } + + return 0; +} + +static void __exit tpm_exit(void) +{ + class_destroy(tpm_class); + unregister_chrdev_region(tpm_devt, TPM_NUM_DEVICES); +} + +subsys_initcall(tpm_init); +module_exit(tpm_exit); + MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)"); MODULE_DESCRIPTION("TPM Driver"); MODULE_VERSION("2.0"); |