From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Weber Subject: [PATCHv4] OMAP: Enable Magic SysRq on serial console ttyOx Date: Tue, 1 Feb 2011 08:30:41 +0100 Message-ID: <1296545441-17070-1-git-send-email-weber@corscience.de> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-omap@vger.kernel.org Cc: Thomas Weber , Kevin Hilman , "Govindraj.R" , Greg Kroah-Hartman , open list List-Id: linux-omap@vger.kernel.org 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 Acked-by: Govindraj.R Tested-by: Manjunath G Kondaiah Acked-by: Kevin Hilman --- v3->v4 Rebased to 2.6.38-rc2 after move of drivers/serial to drivers/tty/serial Added Acked-by and Tested-by drivers/tty/serial/omap-serial.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 7f2f010..699b344 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -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 #include #include @@ -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) -- 1.7.4.rc3