EFM32: Logic to unconditionally enable LE clocking. Even you don't use core clock LE as source for LFA or LFB, to read are write any register not clocked by HFPERCLK or HFCORECLK, HFCORECLKLE should be enabled.  From Pierre-noel Bouteville.

ARM assembly language memcpy.S was not returning a value in R0 it is required to do.  From David Sidrane

Tiva Ethernet:  Move place where interrupts are disabled.  It is probably not possible, but the logic looks like it could leave interrupts disabled

Recent changes to stm32_rtcc.c do not compile with STM32L15XX configurations.  From Jussi Kivilinna.

Disabling any of EXTI 5-9 interrupts was disabling interrupts for all EXTI 5-9. Same issue with EXTI 10-15.  From Jussi Kivilinna.

Get USART 2 & 3 working on lpc4357-evb. These changes are required to get USART 2 and 3 working on the Embest development board.  From Toby Duckworth

Remove CONFIG_DEBUG_STACK.  Adding CONFIG_STACK_COLORATION makes this configuration option pointless

Add CONFIG_STACK_COLORATION that does the same thing as CONFIG_DEBUG_STACK but without enabling debug.  From David Sidrane

Armv7-M: Remove Px4-only setting of stack to 0xff.  This is incompatible with standard NuttX stack montitoring logic

Armv7-M: Remove Px4-only setting of stack to 0xff.  This is incompatible with standard NuttX stack montitoring logic

All Ethernet drivers (again):  Missed one place where arp_out() is called and neighber_out() needs to be called

Networking:  Modify all Ethernet drivers:  Do neighbor look-up on all outgoing IPv6 packs in order to properly set the destination link layer address.

nuttx/arch/arm/src/stm32/stm32_serial.c: fix declaration and definition of up_receive() and up_dma_receive() to match fields of uart_ops_s from nuttx/include/nuttx/serial/serial.h

Tiva Ethernet:  When calling into the stack from the worker thread, it is necessary to have the stack locked

Networking:  All Ethernet drivers:  Call ipv6_input if IPv6 is enabled and an IPv6 packet is received

- Copy net/devif/devif_input.c to ipv6_input.c.  Remove all IPv4-specific logic.
- Rename net/devif/devif_input.c to ipv4_input.c.  Remove all IPv6-specific logic
- Split IPv4 header structure out as net_ipv4hdr_s from net_iphdr_s

Removed setting of the initial timer interval load value (or, rather, it is always set to zero for a free-running timer).  Also, do not unconditional enable the timer out interrupt.  The timerout interrupt is not not enabled until tiva_timer32_setinterval() is called.