qcacmn: Stringify HW_VERSION value when HW UNKNOWN

When new hardware is not found in the lookup table
for human readable hardware names, print the hex
value of the hardware version info.

Change-Id: If821ba04c83f2d9b54587379d92bdc1918d7a094
CRs-Fixed: 1092353

hif/inc/hif.h

@@ -283,6 +283,7 @@ struct hif_target_info {
 	uint32_t target_type;
 	uint32_t target_revision;
 	uint32_t soc_version;
+	char *hw_name;
 };
 
 struct hif_opaque_softc {

hif/src/hif_main.c

@@ -331,6 +331,9 @@ static const char *hif_get_hw_name(struct hif_target_info *info)
 {
 	int i;
 
+	if (info->hw_name)
+		return info->hw_name;
+
 	for (i = 0; i < ARRAY_SIZE(qwlan_hw_list); i++) {
 		if (info->target_version == qwlan_hw_list[i].id &&
 		    info->target_revision == qwlan_hw_list[i].subid) {
@@ -338,7 +341,16 @@ static const char *hif_get_hw_name(struct hif_target_info *info)
 		}
 	}
 
-	return "Unknown Device";
+	info->hw_name = qdf_mem_malloc(64);
+	if (!info->hw_name)
+		return "Unknown Device (nomem)";
+
+	i = qdf_snprint(info->hw_name, 64, "HW_VERSION=%x.",
+			info->target_version);
+	if (i < 0)
+		return "Unknown Device (snprintf failure)";
+	else
+		return info->hw_name;
 }
 
 /**
@@ -449,6 +461,12 @@ void hif_close(struct hif_opaque_softc *hif_ctx)
 		scn->athdiag_procfs_inited = false;
 	}
 
+	if (scn->target_info.hw_name) {
+		char *hw_name = scn->target_info.hw_name;
+		scn->target_info.hw_name = "ErrUnloading";
+		qdf_mem_free(hw_name);
+	}
+
 	hif_bus_close(scn);
 	qdf_mem_free(scn);
 }