Hi! 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 <[EMAIL PROTECTED]>
Kind regards, René Bürgel
--
René Bürgel
Software Engineer
Unicontrol Systemtechnik GmbH
OT Dittersbach
Sachsenburger Weg 34
09669 Frankenberg
Tel.: 03 72 06/ 88 73 - 19
Fax: 03 72 06/ 88 73 - 60
E-Mail: [EMAIL PROTECTED]
Internet: www.unicontrol.de
--- drivers/serial/mpc52xx_uart.c 2008-08-07 15:55:43.000000000 +0200
+++ drivers/serial/mpc52xx_uart_orig.c 2008-09-11 13:19:12.000000000 +0200
@@ -752,10 +752,17 @@
if (status & MPC52xx_PSC_SR_RB) {
flag = TTY_BREAK;
uart_handle_break(port);
+ port->icount.brk++;
} else if (status & MPC52xx_PSC_SR_PE)
+ {
flag = TTY_PARITY;
+ 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 +776,7 @@
* affect the current character
*/
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ port->icount.overrun++;
}
}
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