diff options
| author | Alper Ak <alperyasinak1@gmail.com> | 2025-12-26 13:23:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-02-26 15:00:41 -0800 |
| commit | 2f7a665e1323359d99c74301d1e180f5e2c40181 (patch) | |
| tree | 27672292b3f23b974a6db8289f1e13fbbb851122 /drivers/char | |
| parent | a2c41467ef42f69a3958493a0395ba75174710dc (diff) | |
tpm: tpm_i2c_infineon: Fix locality leak on get_burstcount() failure
[ Upstream commit bbd6e97c836cbeb9606d7b7e5dcf8a1d89525713 ]
get_burstcount() can return -EBUSY on timeout. When this happens, the
function returns directly without releasing the locality that was
acquired at the beginning of tpm_tis_i2c_send().
Use goto out_err to ensure proper cleanup when get_burstcount() fails.
Fixes: aad628c1d91a ("char/tpm: Add new driver for Infineon I2C TIS TPM")
Signed-off-by: Alper Ak <alperyasinak1@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/tpm/tpm_i2c_infineon.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c index bdf1f329a679..8b7d32de0b2e 100644 --- a/drivers/char/tpm/tpm_i2c_infineon.c +++ b/drivers/char/tpm/tpm_i2c_infineon.c @@ -544,8 +544,10 @@ static int tpm_tis_i2c_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, burstcnt = get_burstcount(chip); /* burstcnt < 0 = TPM is busy */ - if (burstcnt < 0) - return burstcnt; + if (burstcnt < 0) { + rc = burstcnt; + goto out_err; + } if (burstcnt > (len - 1 - count)) burstcnt = len - 1 - count; |