From d8d64d6b29d331f1217c77999f5104fe68b0ef3a Mon Sep 17 00:00:00 2001
From: Simon Tatham <anakin@pobox.com>
Date: Mon, 25 Sep 2006 16:51:28 -0700
Subject: [SERIAL] Magic SysRq SAK does nothing on serial consoles

Make sysrq-K work on serial console by passing in the tty.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index f9fdf97..de2e681 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -415,7 +415,7 @@ uart_handle_sysrq_char(struct uart_port *port, unsigned int ch,
 #ifdef SUPPORT_SYSRQ
 	if (port->sysrq) {
 		if (ch && time_before(jiffies, port->sysrq)) {
-			handle_sysrq(ch, regs, NULL);
+			handle_sysrq(ch, regs, port->info->tty);
 			port->sysrq = 0;
 			return 1;
 		}
-- 
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