Commit 84507794 authored Jun 11, 2009 by Sonic Zhang Committed by Linus Torvalds Jun 11, 2009

Blackfin Serial Driver: handle anomaly 05000231



05000231 - UART STB Bit Incorrectly Affects Receiver Setting
For processors affected by this, we cannot safely allow CSTOPB to be set
as the UART will then be unable to properly clock in bytes.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 0efa4f2c

drivers/serial/bfin_5xx.c

+10 −2

Original line number	Diff line number	Diff line
		@@ -828,8 +828,16 @@ bfin_serial_set_termios(struct uart_port port, struct ktermios termios,
		__func__);
		}

		if (termios->c_cflag & CSTOPB)
		/* Anomaly notes:
		* 05000231 - STOP bit is always set to 1 whatever the user is set.
		*/
		if (termios->c_cflag & CSTOPB) {
		if (ANOMALY_05000231)
		printk(KERN_WARNING "STOP bits other than 1 is not "
		"supported in case of anomaly 05000231.\n");
		else
		lcr \|= STB;
		}
		if (termios->c_cflag & PARENB)
		lcr \|= PEN;
		if (!(termios->c_cflag & PARODD))