mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-04-02 04:41:10 -04:00
Code Issues Packages Projects Releases Wiki Activity

tpm: tpm_i2c_infineon: Fix locality leak on get_burstcount() failure

Browse Source 
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: aad628c1d9 ("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>
This commit is contained in:
Alper Ak
2025-12-26 13:23:38 +03:00
committed by Jarkko Sakkinen
parent dee65f7936
commit bbd6e97c83
1 changed files with 4 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/char/tpm/tpm_i2c_infineon.c
View File

@@ -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;