Sprinkling all over the place is just plain wrong so drop all of them before the TPM bus encryption feature hits a release.
Link: https://lore.kernel.org/lkml/20240414170850.148122-1-el...@linaro.org/ Fixes: 1085b8276bb4 ("tpm: Add the rest of the session HMAC API") Signed-off-by: Jarkko Sakkinen <jar...@kernel.org> --- I have had to literally fight for so many other cosmetic things such as https://lore.kernel.org/linux-integrity/20240528095438.1857-1-jar...@kernel.org/T/#u so that I must have missed this. If I contribute to any subsystem, I just plain do all that is asked, no questions asked. Only reason I left a review unaddressed is when I see some intersection with the architecture. And lastly, not introducing new WARN's should be dead obvious, unless per-WARN explicitly reasoned in the commit message near to the level that it could be proven at court. Unless this care, I will simply not review patch with something like this embedded. --- drivers/char/tpm/tpm2-sessions.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/char/tpm/tpm2-sessions.c b/drivers/char/tpm/tpm2-sessions.c index 907ac9956a78..371cf28a2b6a 100644 --- a/drivers/char/tpm/tpm2-sessions.c +++ b/drivers/char/tpm/tpm2-sessions.c @@ -394,7 +394,7 @@ void tpm_buf_append_hmac_session(struct tpm_chip *chip, struct tpm_buf *buf, /* we're not the first session */ len = get_unaligned_be32(&buf->data[auth->session]); if (4 + len + auth->session != tpm_buf_length(buf)) { - WARN(1, "session length mismatch, cannot append"); + pr_warn("tpm: session length mismatch, cannot append"); return; } @@ -644,8 +644,10 @@ void tpm_buf_append_name(struct tpm_chip *chip, struct tpm_buf *buf, dev_err(&chip->dev, "TPM: too many handles\n"); return; } - WARN(auth->session != tpm_buf_length(buf), - "name added in wrong place\n"); + if (auth->session != tpm_buf_length(buf)) { + pr_warn("tpm: name added in wrong place\n"); + return; + } tpm_buf_append_u32(buf, handle); auth->session += 4; @@ -706,8 +708,8 @@ int tpm_buf_check_hmac_response(struct tpm_chip *chip, struct tpm_buf *buf, int parm_len, len, i, handles; if (auth->session >= TPM_HEADER_SIZE) { - WARN(1, "tpm session not filled correctly\n"); - goto out; + pr_warn("tpm session not filled correctly\n"); + return; } if (rc != 0) -- 2.45.1
