powerpc/mpc5200: Make PSC UART driver update serial errors counters
This patch adds the capability to the mpc52xx-uart to report framing
errors, parity errors, breaks and overruns to userspace. These values
may be requested in userspace by using the ioctl TIOCGICOUNT.
Signed-off-by: René Bürgel <r.buergel@unicontrol.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c
index 28c00c3..d82650d 100644
--- a/drivers/serial/mpc52xx_uart.c
+++ b/drivers/serial/mpc52xx_uart.c
@@ -752,10 +752,15 @@
if (status & MPC52xx_PSC_SR_RB) {
flag = TTY_BREAK;
uart_handle_break(port);
- } else if (status & MPC52xx_PSC_SR_PE)
+ port->icount.brk++;
+ } else if (status & MPC52xx_PSC_SR_PE) {
flag = TTY_PARITY;
- else if (status & MPC52xx_PSC_SR_FE)
+ port->icount.parity++;
+ }
+ else if (status & MPC52xx_PSC_SR_FE) {
flag = TTY_FRAME;
+ port->icount.frame++;
+ }
/* Clear error condition */
out_8(&PSC(port)->command, MPC52xx_PSC_RST_ERR_STAT);
@@ -769,6 +774,7 @@
* affect the current character
*/
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ port->icount.overrun++;
}
}