From 7db60d05e5ccc0a473fa2275f90f2fca0002ab21 Mon Sep 17 00:00:00 2001 From: Vijay Kumar Date: Wed, 1 Feb 2017 11:34:39 -0800 Subject: sparc64: Send break twice from console to return to boot prom Now we can also jump to boot prom from sunhv console by sending break twice on console for both running and panicked kernel cases. Signed-off-by: Vijay Kumar Signed-off-by: David S. Miller --- drivers/tty/serial/sunhv.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/tty') diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c index c5ebdc8bed6a..46e46894e918 100644 --- a/drivers/tty/serial/sunhv.c +++ b/drivers/tty/serial/sunhv.c @@ -116,7 +116,7 @@ static int receive_chars_getchar(struct uart_port *port) static int receive_chars_read(struct uart_port *port) { - int saw_console_brk = 0; + static int saw_console_brk; int limit = 10000; while (limit-- > 0) { @@ -128,6 +128,9 @@ static int receive_chars_read(struct uart_port *port) bytes_read = 0; if (stat == CON_BREAK) { + if (saw_console_brk) + sun_do_break(); + if (uart_handle_break(port)) continue; saw_console_brk = 1; @@ -151,6 +154,7 @@ static int receive_chars_read(struct uart_port *port) if (port->sysrq != 0 && *con_read_page) { for (i = 0; i < bytes_read; i++) uart_handle_sysrq_char(port, con_read_page[i]); + saw_console_brk = 0; } if (port->state == NULL) -- cgit v1.2.3-59-g8ed1b