target: check hex2bin result

Now that hex2bin does error checking, on error add debugging error msg.

Changelog v1 (update):
- fixed definition of 'ret'
- hex2bin now returns an int

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/target/target_core_fabric_lib.c b/drivers/target/target_core_fabric_lib.c
index c4ea3a9a555b..39f021b855ef 100644
--- a/drivers/target/target_core_fabric_lib.c
+++ b/drivers/target/target_core_fabric_lib.c
@@ -63,6 +63,7 @@ u32 sas_get_pr_transport_id(
         unsigned char *buf)
 {
         unsigned char *ptr;
+        int ret;
 
         /*
          * Set PROTOCOL IDENTIFIER to 6h for SAS
@@ -74,7 +75,9 @@ u32 sas_get_pr_transport_id(
          */
         ptr = &se_nacl->initiatorname[4]; /* Skip over 'naa. prefix */
 
-        hex2bin(&buf[4], ptr, 8);
+        ret = hex2bin(&buf[4], ptr, 8);
+        if (ret < 0)
+                pr_debug("sas transport_id: invalid hex string\n");
 
         /*
          * The SAS Transport ID is a hardcoded 24-byte length
@@ -156,8 +159,9 @@ u32 fc_get_pr_transport_id(
         unsigned char *buf)
 {
         unsigned char *ptr;
-        int i;
+        int i, ret;
         u32 off = 8;
+
         /*
          * PROTOCOL IDENTIFIER is 0h for FCP-2
          *
@@ -174,7 +178,9 @@ u32 fc_get_pr_transport_id(
                         i++;
                         continue;
                 }
-                hex2bin(&buf[off++], &ptr[i], 1);
+                ret = hex2bin(&buf[off++], &ptr[i], 1);
+                if (ret < 0)
+                        pr_debug("fc transport_id: invalid hex string\n");
                 i += 2;
         }
         /*