From bbd6e97c836cbeb9606d7b7e5dcf8a1d89525713 Mon Sep 17 00:00:00 2001 From: Alper Ak Date: Fri, 26 Dec 2025 13:23:38 +0300 Subject: tpm: tpm_i2c_infineon: Fix locality leak on get_burstcount() failure 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 Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen --- drivers/char/tpm/tpm_i2c_infineon.c | 6 ++++-- 1 file 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; -- cgit v1.2.3