Hi Greg,

After merging the tty tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

drivers/mfd/at91-usart.c:51:34: error: array type has incomplete element type 'struct of_device_id'
 static const struct of_device_id at91_usart_mode_of_match[] = {
                                  ^~~~~~~~~~~~~~~~~~~~~~~~
drivers/mfd/at91-usart.c:52:4: error: field name not in record or union initializer
  { .compatible = "atmel,at91rm9200-usart" },
    ^
drivers/mfd/at91-usart.c:52:4: note: (near initialization for 'at91_usart_mode_of_match')
drivers/mfd/at91-usart.c:53:4: error: field name not in record or union initializer
  { .compatible = "atmel,at91sam9260-usart" },
    ^
drivers/mfd/at91-usart.c:53:4: note: (near initialization for 'at91_usart_mode_of_match')
drivers/mfd/at91-usart.c:51:34: warning: 'at91_usart_mode_of_match' defined but not used [-Wunused-variable]
 static const struct of_device_id at91_usart_mode_of_match[] = {
                                  ^~~~~~~~~~~~~~~~~~~~~~~~

Caused by commit

  7d3aa342cef7 ("mfd: at91-usart: Add MFD driver for USART")

Forgot to include <linux/mod_devicetable.h>?

I used the version of the tty tree from next-20180910 for today.



-- 
Cheers,
Stephen Rothwell