From 86d94390d9b97639fecb3e032120b93004a3036d Mon Sep 17 00:00:00 2001 From: Nayna Jain Date: Fri, 10 Nov 2017 16:42:19 -0500 Subject: [PATCH] tpm: use tpm_msleep() value as max delay Currently, tpm_msleep() uses delay_msec as the minimum value in usleep_range. However, that is the maximum time we want to wait. The function is modified to use the delay_msec as the maximum value, not the minimum value. After this change, performance on a TPM 1.2 with an 8 byte burstcount for 1000 extends improved from ~9sec to ~8sec. Signed-off-by: Nayna Jain Acked-by: Mimi Zohar --- tpm.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tpm.h b/tpm.h index d9c3659..6f3297e 100644 --- a/tpm.h +++ b/tpm.h @@ -550,8 +550,8 @@ int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, static inline void tpm_msleep(unsigned int delay_msec) { - usleep_range(delay_msec * 1000, - (delay_msec * 1000) + TPM_TIMEOUT_RANGE_US); + usleep_range((delay_msec * 1000) - TPM_TIMEOUT_RANGE_US, + delay_msec * 1000); }; struct tpm_chip *tpm_chip_find_get(int chip_num); -- 1.8.3.1