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| author | Mary Ruthven <mruthven@google.com> | 2019-02-01 12:48:44 -0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2019-03-06 06:51:00 -0800 |
| commit | 26bff5c06189273298658f20cf8df4d83970cdaa (patch) | |
| tree | 480032f5dea733695dca3ed058149a67deb579df | |
| parent | 4aa18870f9a9609749a5a250f94e5ae26e943874 (diff) | |
| download | chrome-ec-26bff5c06189273298658f20cf8df4d83970cdaa.tar.gz | |
tpm_registers: check if_stop has been initialized before calling it
It's possible tpm_stop will be called before the interface has been
registered. Don't call if_stop unless it has been initialized.
BUG=none
BRANCH=cr50
TEST=none
Change-Id: I45b6d11553ce0eda5b097184a5be81f8b79726aa
Signed-off-by: Mary Ruthven <mruthven@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1480710
Commit-Ready: Mary Ruthven <mruthven@chromium.org>
Tested-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-by: Keith Short <keithshort@chromium.org>
| -rw-r--r-- | common/tpm_registers.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/common/tpm_registers.c b/common/tpm_registers.c index 7447ef3191..823f9c7513 100644 --- a/common/tpm_registers.c +++ b/common/tpm_registers.c @@ -903,7 +903,9 @@ int tpm_sync_reset(int wipe_first) void tpm_stop(void) { - if_stop(); + /* Stop the TPM interface if it has been initialized. */ + if (if_stop) + if_stop(); } void tpm_task(void *u) |