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tpm_tis: fix loop that cancels any seizure by a lower locality 

In tpm_tis_mmio_write() if the requesting locality is seizing
access, any seizure by a lower locality is cancelled.  However the
loop doing the seizure had an off-by-one error and the locality
immediately preceding the requesting locality was not being cleared.
This is fixed by adjusting the test in the for loop to check the
localities up to the requesting locality.

Signed-off-by: Liam Merwick <Liam.Merwick@oracle.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
stable-4.0
Liam Merwick 2019-02-15 13:35:17 +00:00 committed by Stefan Berger
parent 8eb29f1bf5
commit 37b55d67c0
1 changed files with 1 additions and 1 deletions
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2
hw/tpm/tpm_tis.c
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@ -624,7 +624,7 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
}
/* cancel any seize by a lower locality */
for (l = 0; l < locty - 1; l++) {
for (l = 0; l < locty; l++) {
s->loc[l].access &= ~TPM_TIS_ACCESS_SEIZE;
}