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tpm/tpm_ftpm_tee: Fix error handling in ftpm_mod_init()

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[ Upstream commit 2b7d07f7ac ]

The ftpm_mod_init() returns the driver_register() directly without checking
its return value, if driver_register() failed, the ftpm_tee_plat_driver is
not unregistered.

Fix by unregister ftpm_tee_plat_driver when driver_register() failed.

Fixes: 9f1944c23c ("tpm_ftpm_tee: register driver on TEE bus")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Reviewed-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yuan Can 2022-11-24 03:19:26 +00:00 • committed by Greg Kroah-Hartman
commit 5b217f4e79
1 changed files with 7 additions and 1 deletions
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8
drivers/char/tpm/tpm_ftpm_tee.c
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@ -397,7 +397,13 @@ static int __init ftpm_mod_init(void)
if (rc)
return rc;
return driver_register(&ftpm_tee_driver.driver);
rc = driver_register(&ftpm_tee_driver.driver);
if (rc) {
platform_driver_unregister(&ftpm_tee_plat_driver);
return rc;
}
return 0;
}
static void __exit ftpm_mod_exit(void)