Merge tag 'nfc-next-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo...

[mirror_ubuntu-hirsute-kernel.git] / drivers / net / ethernet / intel / fm10k / fm10k_tlv.c

diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_tlv.c b/drivers/net/ethernet/intel/fm10k/fm10k_tlv.c
index b999897e50d82f13db320151f09e05c7f9e0e543..f8e87bf086b938fea1ca776cd4162dfe62587402 100644 (file)
--- a/drivers/net/ethernet/intel/fm10k/fm10k_tlv.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_tlv.c
@@ -1,5 +1,5 @@
-/* Intel Ethernet Switch Host Interface Driver
- * Copyright(c) 2013 - 2015 Intel Corporation.
+/* Intel(R) Ethernet Switch Host Interface Driver
+ * Copyright(c) 2013 - 2016 Intel Corporation.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -481,7 +481,8 @@ static s32 fm10k_tlv_attr_validate(u32 *attr,
  *  up into an array of pointers stored in results.  The function will
  *  return FM10K_ERR_PARAM on any input or message error,
  *  FM10K_NOT_IMPLEMENTED for any attribute that is outside of the array
- *  and 0 on success.
+ *  and 0 on success. Any attributes not found in tlv_attr will be silently
+ *  ignored.
  **/
 static s32 fm10k_tlv_attr_parse(u32 *attr, u32 **results,
                                const struct fm10k_tlv_attr *tlv_attr)
@@ -518,14 +519,15 @@ static s32 fm10k_tlv_attr_parse(u32 *attr, u32 **results,
        while (offset < len) {
                attr_id = *attr & FM10K_TLV_ID_MASK;
 
-               if (attr_id < FM10K_TLV_RESULTS_MAX)
-                       err = fm10k_tlv_attr_validate(attr, tlv_attr);
-               else
-                       err = FM10K_NOT_IMPLEMENTED;
+               if (attr_id >= FM10K_TLV_RESULTS_MAX)
+                       return FM10K_NOT_IMPLEMENTED;
 
-               if (err < 0)
+               err = fm10k_tlv_attr_validate(attr, tlv_attr);
+               if (err == FM10K_NOT_IMPLEMENTED)
+                       ; /* silently ignore non-implemented attributes */
+               else if (err)
                        return err;
-               if (!err)
+               else
                        results[attr_id] = attr;
 
                /* update offset */