scripts/kconfig/conf  --syncconfig Kconfig
  DESCEND  objtool
  CALL    scripts/atomic/check-atomics.sh
  CALL    scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  CC      drivers/usb/serial/cp210x.o
  CC      drivers/usb/serial/ftdi_sio.o
  GZIP    kernel/config_data.gz
  CC      kernel/configs.o
In file included from drivers/usb/serial/ftdi_sio.c:42:
./include/linux/gpio/driver.h:722:19: error: static declaration of ‘gpiochip_lock_as_irq’ follows non-static declaration
  722 | static inline int gpiochip_lock_as_irq(struct gpio_chip *chip,
      |                   ^~~~~~~~~~~~~~~~~~~~
./include/linux/gpio/driver.h:706:5: note: previous declaration of ‘gpiochip_lock_as_irq’ was here
  706 | int gpiochip_lock_as_irq(struct gpio_chip *chip, unsigned int offset);
      |     ^~~~~~~~~~~~~~~~~~~~
./include/linux/gpio/driver.h:729:20: error: static declaration of ‘gpiochip_unlock_as_irq’ follows non-static declaration
  729 | static inline void gpiochip_unlock_as_irq(struct gpio_chip *chip,
      |                    ^~~~~~~~~~~~~~~~~~~~~~
./include/linux/gpio/driver.h:707:6: note: previous declaration of ‘gpiochip_unlock_as_irq’ was here
  707 | void gpiochip_unlock_as_irq(struct gpio_chip *chip, unsigned int offset);
      |      ^~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/usb/serial/cp210x.c:23:
./include/linux/gpio/driver.h:722:19: error: static declaration of ‘gpiochip_lock_as_irq’ follows non-static declaration
  722 | static inline int gpiochip_lock_as_irq(struct gpio_chip *chip,
      |                   ^~~~~~~~~~~~~~~~~~~~
./include/linux/gpio/driver.h:706:5: note: previous declaration of ‘gpiochip_lock_as_irq’ was here
  706 | int gpiochip_lock_as_irq(struct gpio_chip *chip, unsigned int offset);
      |     ^~~~~~~~~~~~~~~~~~~~
./include/linux/gpio/driver.h:729:20: error: static declaration of ‘gpiochip_unlock_as_irq’ follows non-static declaration
  729 | static inline void gpiochip_unlock_as_irq(struct gpio_chip *chip,
      |                    ^~~~~~~~~~~~~~~~~~~~~~
./include/linux/gpio/driver.h:707:6: note: previous declaration of ‘gpiochip_unlock_as_irq’ was here
  707 | void gpiochip_unlock_as_irq(struct gpio_chip *chip, unsigned int offset);
      |      ^~~~~~~~~~~~~~~~~~~~~~
scripts/Makefile.build:265: recipe for target 'drivers/usb/serial/cp210x.o' failed
make[3]: *** [drivers/usb/serial/cp210x.o] Error 1
make[3]: *** Waiting for unfinished jobs....
scripts/Makefile.build:265: recipe for target 'drivers/usb/serial/ftdi_sio.o' failed
make[3]: *** [drivers/usb/serial/ftdi_sio.o] Error 1
scripts/Makefile.build:509: recipe for target 'drivers/usb/serial' failed
make[2]: *** [drivers/usb/serial] Error 2
scripts/Makefile.build:509: recipe for target 'drivers/usb' failed
make[1]: *** [drivers/usb] Error 2
make[1]: *** Waiting for unfinished jobs....
  AR      kernel/built-in.a
Makefile:1669: recipe for target 'drivers' failed
make: *** [drivers] Error 2