Hello Greg,
--
Fix tcdrain on coldfire uarts.
Currently with coldfire uarts tcdrain returns without waiting for txempty,
because (tx)fifosize is 0. Fix that and call uart_update_timeout when
setting the baud rate, otherwise tcdrain will wait for an half our :)
Also constify mcf_uart_ops.
Signed-off-by: Philippe De Muyter <p...@macqel.be>
diff --git a/arch/m68k/include/asm/mcfuart.h b/arch/m68k/include/asm/mcfuart.h
index ef22938..01a8716 100644
--- a/arch/m68k/include/asm/mcfuart.h
+++ b/arch/m68k/include/asm/mcfuart.h
@@ -212,5 +212,10 @@ struct mcf_platform_uart {
#define MCFUART_URF_RXS 0xc0 /* Receiver status */
#endif
+#if defined(CONFIG_M5272)
+#define MCFUART_TXFIFOSIZE 25
+#else
+#define MCFUART_TXFIFOSIZE 1
+#endif
/****************************************************************************/
#endif /* mcfuart_h */
diff --git a/drivers/serial/mcf.c b/drivers/serial/mcf.c
index 7bb5fee..b9f7dfe 100644
--- a/drivers/serial/mcf.c
+++ b/drivers/serial/mcf.c
@@ -263,6 +263,7 @@ static void mcf_set_termios(struct uart_port *port, struct
ktermios *termios,
}
spin_lock_irqsave(&port->lock, flags);
+ uart_update_timeout(port, termios->c_cflag, baud);
writeb(MCFUART_UCR_CMDRESETRX, port->membase + MCFUART_UCR);
writeb(MCFUART_UCR_CMDRESETTX, port->membase + MCFUART_UCR);
writeb(MCFUART_UCR_CMDRESETMRPTR, port->membase + MCFUART_UCR);
@@ -379,6 +380,7 @@ static irqreturn_t mcf_interrupt(int irq, void *data)
static void mcf_config_port(struct uart_port *port, int flags)
{
port->type = PORT_MCF;
+ port->fifosize = MCFUART_TXFIFOSIZE;
/* Clear mask, so no surprise interrupts. */
writeb(0, port->membase + MCFUART_UIMR);
@@ -424,7 +426,7 @@ static int mcf_verify_port(struct uart_port *port, struct
serial_struct *ser)
/*
* Define the basic serial functions we support.
*/
-static struct uart_ops mcf_uart_ops = {
+static const struct uart_ops mcf_uart_ops = {
.tx_empty = mcf_tx_empty,
.get_mctrl = mcf_get_mctrl,
.set_mctrl = mcf_set_mctrl,
--
Philippe De Muyter phdm at macqel dot be Tel +32 27029044
Macq Electronique SA rue de l'Aeronef 2 B-1140 Bruxelles Fax +32 27029077
_______________________________________________
uClinux-dev mailing list
uClinux-dev@uclinux.org
http://mailman.uclinux.org/mailman/listinfo/uclinux-dev
This message was resent by uclinux-dev@uclinux.org
To unsubscribe see:
http://mailman.uclinux.org/mailman/options/uclinux-dev
