Merge tag 'tpmdd-next-v5.12-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

Pull tpm updates from Jarkko Sakkinen:
 "New features:

   - Cr50 I2C TPM driver

   - sysfs exports of PCR registers in TPM 2.0 chips

  Bug fixes:

   - bug fixes for tpm_tis driver, which had a racy wait for hardware
     state change to be ready to send a command to the TPM chip. The bug
     has existed already since 2006, but has only made itself known in
     recent past. This is the same as the "last time" :-)

   - Otherwise there's bunch of fixes for not as alarming regressions. I
     think the list is about the same as last time, except I added fixes
     for some disjoint bugs in trusted keys that I found some time ago"

* tag 'tpmdd-next-v5.12-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  KEYS: trusted: Reserve TPM for seal and unseal operations
  KEYS: trusted: Fix migratable=1 failing
  KEYS: trusted: Fix incorrect handling of tpm_get_random()
  tpm/ppi: Constify static struct attribute_group
  ABI: add sysfs description for tpm exports of PCR registers
  tpm: add sysfs exports for all banks of PCR registers
  keys: Update comment for restrict_link_by_key_or_keyring_chain
  tpm: Remove tpm_dev_wq_lock
  char: tpm: add i2c driver for cr50
  tpm: Fix fall-through warnings for Clang
  tpm_tis: Clean up locality release
  tpm_tis: Fix check_locality for correct locality acquisition

1 files changed, 12 insertions, 2 deletions

diff --git a/include/linux/tpm.h b/include/linux/tpm.h
index 8f4ff39f51e7..543aa3b1dedc 100644
--- a/include/linux/tpm.h
+++ b/include/linux/tpm.h
@@ -31,6 +31,7 @@ struct tpm_chip;
 struct trusted_key_payload;
 struct trusted_key_options;
 
+/* if you add a new hash to this, increment TPM_MAX_HASHES below */
 enum tpm_algorithms {
 	TPM_ALG_ERROR		= 0x0000,
 	TPM_ALG_SHA1		= 0x0004,
@@ -42,6 +43,12 @@ enum tpm_algorithms {
 	TPM_ALG_SM3_256		= 0x0012,
 };
 
+/*
+ * maximum number of hashing algorithms a TPM can have.  This is
+ * basically a count of every hash in tpm_algorithms above
+ */
+#define TPM_MAX_HASHES	5
+
 struct tpm_digest {
 	u16 alg_id;
 	u8 digest[TPM_MAX_DIGEST_SIZE];
@@ -146,7 +153,7 @@ struct tpm_chip {
 
 	struct dentry *bios_dir[TPM_NUM_EVENT_LOG_FILES];
 
-	const struct attribute_group *groups[3];
+	const struct attribute_group *groups[3 + TPM_MAX_HASHES];
 	unsigned int groups_cnt;
 
 	u32 nr_allocated_banks;
@@ -397,6 +404,10 @@ static inline u32 tpm2_rc_value(u32 rc)
 #if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE)
 
 extern int tpm_is_tpm2(struct tpm_chip *chip);
+extern __must_check int tpm_try_get_ops(struct tpm_chip *chip);
+extern void tpm_put_ops(struct tpm_chip *chip);
+extern ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_buf *buf,
+				size_t min_rsp_body_length, const char *desc);
 extern int tpm_pcr_read(struct tpm_chip *chip, u32 pcr_idx,
 			struct tpm_digest *digest);
 extern int tpm_pcr_extend(struct tpm_chip *chip, u32 pcr_idx,
@@ -410,7 +421,6 @@ static inline int tpm_is_tpm2(struct tpm_chip *chip)
 {
 	return -ENODEV;
 }
-
 static inline int tpm_pcr_read(struct tpm_chip *chip, int pcr_idx,
 			       struct tpm_digest *digest)
 {