From 9c6bc39260312f1335d9718002e6eaa1a08bcca1 Mon Sep 17 00:00:00 2001 From: Olaf Hering Date: Tue, 22 Jul 2014 09:19:15 +0200 Subject: [PATCH] mini-os: tpm: fix array access in locality_enabled gcc-4.3 fails to prove that array indices will remain positive. Add a hint for the compiler and check the index value before using it. Signed-off-by: Olaf Hering Acked-by: Samuel Thibault --- tpm_tis.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tpm_tis.c b/tpm_tis.c index e8ca69f..dc4134a 100644 --- a/tpm_tis.c +++ b/tpm_tis.c @@ -611,7 +611,7 @@ s_time_t tpm_calc_ordinal_duration(struct tpm_chip *chip, static int locality_enabled(struct tpm_chip* tpm, int l) { - return tpm->enabled_localities & (1 << l); + return l >= 0 && tpm->enabled_localities & (1 << l); } static int check_locality(struct tpm_chip* tpm, int l) { -- 2.39.5