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UART011_CR_RXE is set in pl011_startup() during normal initialization, and cleared by pl011_disable_uart() during port shutdown. You can use a none-console port in poll mode like kgdboc does with tty_find_polling_driver() after a port shutdown. But pl011_startup() is not called in tty_find_polling_driver(). So you need to set UART011_CR_RXE to reenable receive function. Not sure setting UART011_CR_RXE in pl011_set_termios() is a good idea through. Signed-off-by: Hongyu Xie <xiehongyu1@kylinos.cn> Link: https://lore.kernel.org/r/20230501070909.1144547-1-xiehongyu1@kylinos.cn Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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.. | ||
hvc | ||
ipwireless | ||
serdev | ||
serial | ||
vt | ||
amiserial.c | ||
ehv_bytechan.c | ||
goldfish.c | ||
Kconfig | ||
Makefile | ||
mips_ejtag_fdc.c | ||
moxa.c | ||
mxser.c | ||
n_gsm.c | ||
n_hdlc.c | ||
n_null.c | ||
n_tty.c | ||
nozomi.c | ||
pty.c | ||
rpmsg_tty.c | ||
synclink_gt.c | ||
sysrq.c | ||
tty.h | ||
tty_audit.c | ||
tty_baudrate.c | ||
tty_buffer.c | ||
tty_io.c | ||
tty_ioctl.c | ||
tty_jobctrl.c | ||
tty_ldisc.c | ||
tty_ldsem.c | ||
tty_mutex.c | ||
tty_port.c | ||
ttynull.c | ||
vcc.c |