[PATCH v2 1/2] keys/trusted_keys: clean up debug message logging in the tpm backend

[Srish Srinivasan <ssrish@linux.ibm.com>]

The TPM trusted-keys backend uses a local TPM_DEBUG guard and pr_info()
for logging debug information.

Replace pr_info() with pr_debug(), and use KERN_DEBUG for print_hex_dump().
Remove TPM_DEBUG.

No functional change intended.

Signed-off-by: Srish Srinivasan <ssrish@linux.ibm.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
 security/keys/trusted-keys/trusted_tpm1.c | 40 +++++++----------------
 1 file changed, 12 insertions(+), 28 deletions(-)

diff --git a/security/keys/trusted-keys/trusted_tpm1.c b/security/keys/trusted-keys/trusted_tpm1.c
index c865c97aa1b4..216caef97ffc 100644
--- a/security/keys/trusted-keys/trusted_tpm1.c
+++ b/security/keys/trusted-keys/trusted_tpm1.c
@@ -46,28 +46,25 @@ enum {
 	SRK_keytype = 4
 };
 
-#define TPM_DEBUG 0
-
-#if TPM_DEBUG
 static inline void dump_options(struct trusted_key_options *o)
 {
-	pr_info("sealing key type %d\n", o->keytype);
-	pr_info("sealing key handle %0X\n", o->keyhandle);
-	pr_info("pcrlock %d\n", o->pcrlock);
-	pr_info("pcrinfo %d\n", o->pcrinfo_len);
-	print_hex_dump(KERN_INFO, "pcrinfo ", DUMP_PREFIX_NONE,
+	pr_debug("sealing key type %d\n", o->keytype);
+	pr_debug("sealing key handle %0X\n", o->keyhandle);
+	pr_debug("pcrlock %d\n", o->pcrlock);
+	pr_debug("pcrinfo %d\n", o->pcrinfo_len);
+	print_hex_dump(KERN_DEBUG, "pcrinfo ", DUMP_PREFIX_NONE,
 		       16, 1, o->pcrinfo, o->pcrinfo_len, 0);
 }
 
 static inline void dump_sess(struct osapsess *s)
 {
-	print_hex_dump(KERN_INFO, "trusted-key: handle ", DUMP_PREFIX_NONE,
+	print_hex_dump(KERN_DEBUG, "trusted-key: handle ", DUMP_PREFIX_NONE,
 		       16, 1, &s->handle, 4, 0);
-	pr_info("secret:\n");
-	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE,
+	pr_debug("secret:\n");
+	print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_NONE,
 		       16, 1, &s->secret, SHA1_DIGEST_SIZE, 0);
-	pr_info("trusted-key: enonce:\n");
-	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE,
+	pr_debug("trusted-key: enonce:\n");
+	print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_NONE,
 		       16, 1, &s->enonce, SHA1_DIGEST_SIZE, 0);
 }
 
@@ -75,23 +72,10 @@ static inline void dump_tpm_buf(unsigned char *buf)
 {
 	int len;
 
-	pr_info("\ntpm buffer\n");
+	pr_debug("\ntpm buffer\n");
 	len = LOAD32(buf, TPM_SIZE_OFFSET);
-	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, buf, len, 0);
-}
-#else
-static inline void dump_options(struct trusted_key_options *o)
-{
-}
-
-static inline void dump_sess(struct osapsess *s)
-{
-}
-
-static inline void dump_tpm_buf(unsigned char *buf)
-{
+	print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_NONE, 16, 1, buf, len, 0);
 }
-#endif
 
 static int TSS_rawhmac(unsigned char *digest, const unsigned char *key,
 		       unsigned int keylen, ...)
-- 
2.43.0