treewide: Import L41A_Android_S_v30f

Estimated base tags:
kernel/msm-4.9:                    LA.UM.10.3.r1-00600-sdm845.0
drivers/staging/fw-api:            LA.UM.8.3.r1-07100-sdm845.0
drivers/staging/qca-wifi-host-cmn: LA.UM.8.3.c26-02400-sdm845.0
drivers/staging/qcacld-3.0:        LA.UM.8.3.r1-07100-sdm845.0
techpack/audio:                    LA.UM.10.3.r1-00600-sdm845.0

AndroidKernel.mk

@@ -90,6 +90,7 @@ ifeq ($(TARGET_KERNEL),$(current_dir))
     KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/kernel/$(TARGET_KERNEL)
     KERNEL_SYMLINK := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ
     KERNEL_USR := $(KERNEL_SYMLINK)/usr
+    KERNEL_HEADERS_TIMESTAMP := $(KERNEL_SYMLINK)/usr/build-timestamp
     KERNEL_VM_OUT := $(TARGET_OUT_INTERMEDIATES)/kernel_vm/$(TARGET_KERNEL)
     KERNEL_VM_SYMLINK := $(TARGET_OUT_INTERMEDIATES)/KERNEL_VM_OBJ
     KERNEL_VM_USR := $(KERNEL_VM_SYMLINK)/usr
@@ -99,6 +100,8 @@ else
     BUILD_ROOT_LOC := ../
     TARGET_KERNEL_SOURCE := kernel
     KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ
+    KERNEL_USR :=
+    KERNEL_HEADERS_TIMESTAMP := $(KERNEL_OUT)/usr/build-timestamp
     KERNEL_VM_OUT := $(TARGET_OUT_INTERMEDIATES)/KERNEL_VM_OBJ
 endif
 
@@ -204,43 +207,64 @@ $(KERNEL_VM_HEADERS_INSTALL): $(KERNEL_VM_OUT)
 		$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_VM_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) oldconfig; fi;
 endif
 
+ifeq ($(INIT_BOOTCHART2), true)
+KERNEL_CONFIG_OVERRIDE_FILES := bootchart2_defconfig
+endif
+
 $(KERNEL_OUT):
 	mkdir -p $(KERNEL_OUT)
+	mkdir -p $(KERNEL_OUT)/usr
 
-$(KERNEL_CONFIG): $(KERNEL_OUT)
+KERNEL_SOURCE_FILES := $(call find-files-in-subdirs, $(TARGET_KERNEL_SOURCE), "*", .)
+KERNEL_SOURCE_FILES := $(addprefix $(TARGET_KERNEL_SOURCE)/, $(KERNEL_SOURCE_FILES))
+
+$(KERNEL_CONFIG): $(KERNEL_SOURCE_FILES) | $(KERNEL_OUT)
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) $(KERNEL_DEFCONFIG)
 	$(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE)" ]; then \
 			echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE)'"; \
 			echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \
+			$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) KERNEL_COMPRESSION_SUFFIX=$(TARGET_KERNEL_COMPRESSION_SUFFIX) $(real_cc) oldconfig; fi
+	$(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE_FILES)" ]; then \
+			echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE_FILES)'"; \
+			for override_file in $(KERNEL_CONFIG_OVERRIDE_FILES); \
+				do cat $(TARGET_KERNEL_SOURCE)/arch/$(KERNEL_ARCH)/configs/$$override_file >> $(KERNEL_OUT)/.config; done; \
 			$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) oldconfig; fi
 
+ifeq ($(PRODUCT_SUPPORT_EXFAT), y)
+sinclude ./device/lge/common/fs/tuxera.mk
+endif
+
 ifeq ($(TARGET_KERNEL_APPEND_DTB), true)
 TARGET_PREBUILT_INT_KERNEL_IMAGE := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/Image
 $(TARGET_PREBUILT_INT_KERNEL_IMAGE): $(KERNEL_USR)
-$(TARGET_PREBUILT_INT_KERNEL_IMAGE): $(KERNEL_OUT) $(KERNEL_HEADERS_INSTALL)
+$(TARGET_PREBUILT_INT_KERNEL_IMAGE): $(KERNEL_HEADERS_INSTALL) $(KERNEL_SOURCE_FILES) | $(KERNEL_OUT)
 	$(hide) echo "Building kernel modules..."
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) $(KERNEL_CFLAGS) Image
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) $(KERNEL_CFLAGS) modules
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) INSTALL_MOD_PATH=$(BUILD_ROOT_LOC)../$(KERNEL_MODULES_INSTALL) INSTALL_MOD_STRIP=1 $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) modules_install
+	$(build-tuxera-exfat)
 	$(mv-modules)
 	$(clean-module-folder)
 
 $(TARGET_PREBUILT_INT_KERNEL): $(TARGET_PREBUILT_INT_KERNEL_IMAGE)
 	$(hide) echo "Building kernel..."
 	$(hide) rm -rf $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/dts
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) $(KERNEL_CFLAGS)
+
 else
 TARGET_PREBUILT_INT_KERNEL_IMAGE := $(TARGET_PREBUILT_INT_KERNEL)
-$(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_OUT) $(KERNEL_HEADERS_INSTALL)
+$(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_HEADERS_INSTALL) $(KERNEL_SOURCE_FILES) | $(KERNEL_OUT)
 	$(hide) echo "Building kernel..."
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) $(KERNEL_CFLAGS)
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) $(KERNEL_CFLAGS) modules
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) INSTALL_MOD_PATH=$(BUILD_ROOT_LOC)../$(KERNEL_MODULES_INSTALL) INSTALL_MOD_STRIP=1 $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) modules_install
+	$(build-tuxera-exfat)
 	$(mv-modules)
 	$(clean-module-folder)
 endif
 
-$(KERNEL_HEADERS_INSTALL): $(KERNEL_OUT)
+$(KERNEL_HEADERS_TIMESTAMP): $(KERNEL_HEADERS_INSTALL) $(KERNEL_USR)
+$(KERNEL_HEADERS_INSTALL): $(KERNEL_SOURCE_FILES) | $(KERNEL_OUT)
 	$(hide) if [ ! -z "$(KERNEL_HEADER_DEFCONFIG)" ]; then \
 			rm -f $(BUILD_ROOT_LOC)$(KERNEL_CONFIG); \
 			$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_HEADER_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) $(KERNEL_HEADER_DEFCONFIG); \
@@ -257,13 +281,21 @@ $(KERNEL_HEADERS_INSTALL): $(KERNEL_OUT)
 			echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE)'"; \
 			echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \
 			$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) oldconfig; fi
+	$(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE_FILES)" ]; then \
+			echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE_FILES)'"; \
+			for override_file in $(KERNEL_CONFIG_OVERRIDE_FILES); \
+					do cat $(TARGET_KERNEL_SOURCE)/arch/$(KERNEL_ARCH)/configs/$$override_file >> $(KERNEL_OUT)/.config; done; \
+			$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) KERNEL_COMPRESSION_SUFFIX=$(TARGET_KERNEL_COMPRESSION_SUFFIX) $(real_cc) oldconfig; fi
+
+
+	$(hide) touch $@/build-timestamp
 
 .PHONY: kerneltags
-kerneltags: $(KERNEL_OUT) $(KERNEL_CONFIG)
+kerneltags: $(KERNEL_CONFIG) | $(KERNEL_OUT)
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) tags
 
 .PHONY: kernelconfig
-kernelconfig: $(KERNEL_OUT) $(KERNEL_CONFIG)
+kernelconfig: $(KERNEL_CONFIG) | $(KERNEL_OUT)
 	env KCONFIG_NOTIMESTAMP=true \
 	     $(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) menuconfig
 	env KCONFIG_NOTIMESTAMP=true \

Documentation/networking/ip-sysctl.txt

@@ -761,6 +761,18 @@ tcp_challenge_ack_limit - INTEGER
 	in RFC 5961 (Improving TCP's Robustness to Blind In-Window Attacks)
 	Default: 100
 
+MPTCP variables:
+
+mptcp_enabled - INTEGER
+	Enable or disable Multipath TCP for new connections.
+	Possible values are:
+
+	0: Multipath TCP is disabled on all TCP-sockets that are newly created.
+	1: Multipath TCP is enabled by default on all new TCP-sockets. Note that
+	   existing sockets in LISTEN-state will still use regular TCP.
+	2: Enables Multipath TCP only upon the request of the application
+	   throught the socket-option MPTCP_ENABLED.
+
 UDP variables:
 
 udp_mem - vector of 3 INTEGERs: min, pressure, max

Makefile

@@ -402,7 +402,7 @@ KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
 		   -fno-strict-aliasing -fno-common -fshort-wchar \
 		   -Werror-implicit-function-declaration \
 		   -Wno-format-security \
-		   -std=gnu89
+		   -std=gnu89 -Wno-enum-compare
 KBUILD_CPPFLAGS := -D__KERNEL__
 KBUILD_AFLAGS_KERNEL :=
 KBUILD_CFLAGS_KERNEL :=
@@ -535,8 +535,8 @@ KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
 KBUILD_CFLAGS += $(call cc-disable-warning, duplicate-decl-specifier)
-KBUILD_CFLAGS += -Wno-undefined-optimized
-KBUILD_CFLAGS += -Wno-tautological-constant-out-of-range-compare
+KBUILD_CFLAGS += $(call cc-option, -Wno-undefined-optimized)
+KBUILD_CFLAGS += $(call cc-option, -Wno-tautological-constant-out-of-range-compare)
 KBUILD_CFLAGS += $(call cc-option, -Wno-sometimes-uninitialized)
 KBUILD_CFLAGS += -Wno-asm-operand-widths
 KBUILD_CFLAGS += -Wno-initializer-overrides