diff mbox series

[PULL,v1,1/2] tpm_tis: fix loop that cancels any seizure by a lower locality

Message ID 20190304154739.758486-2-stefanb@linux.vnet.ibm.com
State New
Headers show
Series [PULL,v1,1/2] tpm_tis: fix loop that cancels any seizure by a lower locality | expand

Commit Message

Stefan Berger March 4, 2019, 3:47 p.m. UTC 
From: Liam Merwick <liam.merwick@oracle.com>

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>
---
 hw/tpm/tpm_tis.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c
index fd6bb9b59a..61a130beef 100644
--- a/hw/tpm/tpm_tis.c
+++ b/hw/tpm/tpm_tis.c
@@ -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;
                 }