[PATCH 03/11] tpm: Rename tpm2_allow_extend()

[Raymond Mao]

From: Ilias Apalodimas <ilias.apalodimas at linaro.org>

When that function was introduced we were only using it to check if
extending a PCR was allowed, so the name made sense. A few patches ago
we used that function to reason about the EventLog creation and general
usage of PCRs , so let's rename it to something more generic that makes
more sense in all contexts.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>
Signed-off-by: Raymond Mao <raymond.mao at linaro.org>
---
 include/tpm-v2.h | 5 +++--
 lib/tpm-v2.c     | 4 ++--
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/include/tpm-v2.h b/include/tpm-v2.h
index 8c43f4fd9b..87b2c614ad 100644
--- a/include/tpm-v2.h
+++ b/include/tpm-v2.h
@@ -732,12 +732,13 @@ u16 tpm2_algorithm_to_len(enum tpm2_algorithms algo);
  */
 
 /**
- * tpm2_allow_extend() - Check if extending PCRs is allowed and safe
+ * tpm2_check_active_banks() - Check if the active PCR banks are supported by
+ *                             our configuration
  *
  * @dev: TPM device
  * Return: true if allowed
  */
-bool tpm2_allow_extend(struct udevice *dev);
+bool tpm2_check_active_banks(struct udevice *dev);
 
 /**
  * tpm2_is_active_bank() - check the pcr_select. If at least one of the PCRs
diff --git a/lib/tpm-v2.c b/lib/tpm-v2.c
index cb636414de..0edb0aa90c 100644
--- a/lib/tpm-v2.c
+++ b/lib/tpm-v2.c
@@ -197,7 +197,7 @@ u32 tpm2_pcr_extend(struct udevice *dev, u32 index, u32 algorithm,
 	if (!digest)
 		return -EINVAL;
 
-	if (!tpm2_allow_extend(dev)) {
+	if (!tpm2_check_active_banks(dev)) {
 		log_err("Cannot extend PCRs if all the TPM enabled algorithms are not supported\n");
 		return -EINVAL;
 	}
@@ -896,7 +896,7 @@ u16 tpm2_algorithm_to_len(enum tpm2_algorithms algo)
 	return 0;
 }
 
-bool tpm2_allow_extend(struct udevice *dev)
+bool tpm2_check_active_banks(struct udevice *dev)
 {
 	struct tpml_pcr_selection pcrs;
 	size_t i;
-- 
2.25.1