1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/tpm.h b/include/linux/tpm.h
index fcb627ff8d3e..9a9051bb1a03 100644
--- a/include/linux/tpm.h
+++ b/include/linux/tpm.h
@@ -22,6 +22,8 @@
 #ifndef __LINUX_TPM_H__
 #define __LINUX_TPM_H__
 
+#define TPM_DIGEST_SIZE 20      /* Max TPM v1.2 PCR size */
+
 /*
  * Chip num is this value or a valid tpm idx
  */