Commit 364a6ece authored Feb 01, 2011 by Thomas Weber Committed by Greg Kroah-Hartman Feb 03, 2011

OMAP: Enable Magic SysRq on serial console ttyOx



Magic SysRq key is not working for OMAP on new serial
console ttyOx because SUPPORT_SYSRQ is not defined
for omap-serial.

This patch defines SUPPORT_SYSRQ in omap-serial and
enables handling of Magic SysRq character.

Further there is an issue of losing first break character.
Removing the reset of the lsr_break_flag fixes this issue.

Signed-off-by: Thomas Weber <weber@corscience.de>
Acked-by: Govindraj.R <govindraj.raja@ti.com>
Tested-by: Manjunath G Kondaiah <manjugk@ti.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent 2f1522ec

drivers/tty/serial/omap-serial.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -20,6 +20,10 @@
		* this driver as required for the omap-platform.
		*/

		#if defined(CONFIG_SERIAL_OMAP_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
		#define SUPPORT_SYSRQ
		#endif

		#include <linux/module.h>
		#include <linux/init.h>
		#include <linux/console.h>
		@@ -190,7 +194,6 @@ static inline void receive_chars(struct uart_omap_port up, int status)
		if (up->port.line == up->port.cons->index) {
		/* Recover the break flag from console xmit */
		lsr \|= up->lsr_break_flag;
		up->lsr_break_flag = 0;
		}
		#endif
		if (lsr & UART_LSR_BI)