Stephen,
Can you test this patch on v 1.3 hardware? It works on my v 1.4.
If you use kdmx2, the way to send a break is '~B'. The previous
key pressed must be <enter> for the '~' escape to be recognized.
Thanks!
-Frank
From: Frank Rowand <frank.rowand@xxxxxxxxxxxxxx>
Add missing sysrq handling to msm_serial.
Signed-off-by: Frank Rowand <frank.rowand@xxxxxxxxxxxxxx>
---
drivers/tty/serial/msm_serial.c | 26 +++++++++++++++++++++-----
1 file changed, 21 insertions(+), 5 deletions(-)
Index: b/drivers/tty/serial/msm_serial.c
===================================================================
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -126,6 +126,8 @@ static void handle_rx_dm(struct uart_por
while (count > 0) {
unsigned int c;
+ unsigned char *cp;
+ int res;
sr = msm_read(port, UART_SR);
if ((sr & UART_SR_RX_READY) == 0) {
@@ -135,15 +137,29 @@ static void handle_rx_dm(struct uart_por
c = msm_read(port, UARTDM_RF);
if (sr & UART_SR_RX_BREAK) {
port->icount.brk++;
- if (uart_handle_break(port))
+ if (uart_handle_break(port)) {
+ count -= 1;
continue;
+ }
} else if (sr & UART_SR_PAR_FRAME_ERR)
port->icount.frame++;
- /* TODO: handle sysrq */
- tty_insert_flip_string(tport, (char *)&c,
- (count > 4) ? 4 : count);
- count -= 4;
+ spin_unlock(&port->lock);
+ res = uart_handle_sysrq_char(port, c);
+ spin_lock(&port->lock);
+
+ cp = (unsigned char *)&c;
+ if (res) {
+ count -= 1;
+ tty_insert_flip_string(tport, cp + 1,
+ (count > 3) ? 3 : count);
+ count -= (count > 3) ? 3 : count;
+ } else {
+ tty_insert_flip_string(tport, cp,
+ (count > 4) ? 4 : count);
+ count -= (count > 4) ? 4 : count;
+ }
+
}
spin_unlock(&port->lock);
--
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