qcacld-3.0: Fix build error when enable 6g in kernel 4.4

When CONFIG_BAND_6GHZ and CFG80211_6GHZ_BAND_SUPPORTED are defined in
kernel 4.4, which means 6g feature is enabled, currently there is a
build error: wlan_hdd_iftype_data_alloc_6ghz is defined but not used.

To fix this issue, refine iftype_data_*g defination with below rules.
1. If CONFIG_BAND_6GHZ and CFG80211_6GHZ_BAND_SUPPORTED are defined,
iftype_data_2g, iftype_data_5g and iftype_data_6g will be defined no
matter the kernel version.
2. If the kernel version is not smaller than 4.19, iftype_data_2g and
iftype_data_5g will be defined.
3. If the kernel version is not smaller than 5.4 and CONFIG_BAND_6GHZ
is defined, iftype_data_6g will be defined.

Change-Id: If75bea9fc4c11d6cacd8dbf49455277f055ed8de
CRs-Fixed: 2600962

core/hdd/inc/wlan_hdd_main.h

@@ -1607,7 +1607,8 @@ struct hdd_context {
 	struct ieee80211_channel *channels_2ghz;
 	struct ieee80211_channel *channels_5ghz;
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
+#if (defined(CONFIG_BAND_6GHZ) && defined(CFG80211_6GHZ_BAND_SUPPORTED)) || \
+		(LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
 	struct ieee80211_sband_iftype_data *iftype_data_2g;
 	struct ieee80211_sband_iftype_data *iftype_data_5g;
 #endif

core/hdd/src/wlan_hdd_cfg80211.c

@@ -14998,6 +14998,8 @@ wlan_hdd_populate_srd_chan_info(struct hdd_context *hdd_ctx, uint32_t index)
 
 #endif
 
+#if (defined(CONFIG_BAND_6GHZ) && defined(CFG80211_6GHZ_BAND_SUPPORTED)) || \
+	   (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
 #if defined(CONFIG_BAND_6GHZ) && (defined(CFG80211_6GHZ_BAND_SUPPORTED) || \
 	   (KERNEL_VERSION(5, 4, 0) <= LINUX_VERSION_CODE))
 static QDF_STATUS
@@ -15011,15 +15013,26 @@ wlan_hdd_iftype_data_alloc_6ghz(struct hdd_context *hdd_ctx)
 
 	return QDF_STATUS_SUCCESS;
 }
+
+static void
+wlan_hdd_iftype_data_mem_free_6ghz(struct hdd_context *hdd_ctx)
+{
+	qdf_mem_free(hdd_ctx->iftype_data_6g);
+	hdd_ctx->iftype_data_6g = NULL;
+}
 #else
 static inline QDF_STATUS
 wlan_hdd_iftype_data_alloc_6ghz(struct hdd_context *hdd_ctx)
 {
 	return QDF_STATUS_SUCCESS;
 }
+
+static inline void
+wlan_hdd_iftype_data_mem_free_6ghz(struct hdd_context *hdd_ctx)
+{
+}
 #endif
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
 static QDF_STATUS
 wlan_hdd_iftype_data_alloc(struct hdd_context *hdd_ctx)
 {
@@ -15051,30 +15064,7 @@ wlan_hdd_iftype_data_alloc(struct hdd_context *hdd_ctx)
 
 	return QDF_STATUS_SUCCESS;
 }
-#else
-static inline QDF_STATUS
-wlan_hdd_iftype_data_alloc(struct hdd_context *hdd_ctx)
-{
-	return QDF_STATUS_SUCCESS;
-}
-#endif
 
-#if defined(CONFIG_BAND_6GHZ) && (defined(CFG80211_6GHZ_BAND_SUPPORTED) || \
-	   (KERNEL_VERSION(5, 4, 0) <= LINUX_VERSION_CODE))
-static void
-wlan_hdd_iftype_data_mem_free_6ghz(struct hdd_context *hdd_ctx)
-{
-	qdf_mem_free(hdd_ctx->iftype_data_6g);
-	hdd_ctx->iftype_data_6g = NULL;
-}
-#else
-static inline void
-wlan_hdd_iftype_data_mem_free_6ghz(struct hdd_context *hdd_ctx)
-{
-}
-#endif
-
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
 static void
 wlan_hdd_iftype_data_mem_free(struct hdd_context *hdd_ctx)
 {
@@ -15085,6 +15075,13 @@ wlan_hdd_iftype_data_mem_free(struct hdd_context *hdd_ctx)
 	hdd_ctx->iftype_data_2g = NULL;
 }
 #else
+static QDF_STATUS
+wlan_hdd_iftype_data_alloc(struct hdd_context *hdd_ctx)
+
+{
+	return QDF_STATUS_SUCCESS;
+}
+
 static inline void
 wlan_hdd_iftype_data_mem_free(struct hdd_context *hdd_ctx)
 {

core/hdd/src/wlan_hdd_main.c

@@ -1992,6 +1992,8 @@ static void hdd_extract_fw_version_info(struct hdd_context *hdd_ctx)
 			HDD_FW_VER_REL_ID(hdd_ctx->target_fw_vers_ext);
 }
 
+#if (defined(CONFIG_BAND_6GHZ) && defined(CFG80211_6GHZ_BAND_SUPPORTED)) || \
+	   (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
 #if defined(CONFIG_BAND_6GHZ) && (defined(CFG80211_6GHZ_BAND_SUPPORTED) || \
 		      (KERNEL_VERSION(5, 4, 0) <= LINUX_VERSION_CODE))
 static void
@@ -2032,8 +2034,6 @@ hdd_update_wiphy_he_caps_6ghz(struct hdd_context *hdd_ctx)
 }
 #endif
 
-#if defined(WLAN_FEATURE_11AX) && \
-	   (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
 static void hdd_update_wiphy_he_cap(struct hdd_context *hdd_ctx)
 {
 	tDot11fIEhe_cap he_cap_cfg;