tag	line	file	source code
write_data_ptr	221	include/linux/tty.h	unsigned char *write_data_ptr;
write_data_ptr	1398	kernel/chr_drv/tty_io.c	tty->write_data_ptr = p;
write_data_ptr	1435	kernel/chr_drv/tty_io.c	p = tty->write_data_ptr;
write_data_ptr	1442	kernel/chr_drv/tty_io.c	tty->write_data_ptr = p;