On Tuesday, May 5, 2020 at 2020 11:23:00 PM +0900, Greg Kroah-Hartman wrote: > On Mon, Apr 20, 2020 at 10:32:56AM +0900, Hyunki Koo wrote: > > This patch change the name of macro for general usage. > > > > Signed-off-by: Hyunki Koo <hyunki00.koo@xxxxxxxxxxx> > > This patch series creates the following build error, which is not > allowed: > > CC [M] drivers/tty/serial/samsung_tty.o > drivers/tty/serial/samsung_tty.c:186:13: warning: ‘wr_reg_barrier’ > defined but not used [-Wunused-function] > 186 | static void wr_reg_barrier(struct uart_port *port, u32 reg, u32 val) > | ^~~~~~~~~~~~~~ > > Please fix up and resend. Always make sure you keep the reviewed-by > tags from others as well. > > greg k-h I tested on latest kernel today one more time, there is no error and warning on my side, not only patch 1/3 and patch 3/3 Line 1735: CC drivers/tty/serial/samsung_tty.o Line 343: CC drivers/tty/serial/samsung_tty.o wr_reg_barrier is not defined in patch 1/3, and wr_reg_barrier is define and used in patch3/3 it might be no warning.