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| author | Philippe De Muyter <phdm@macqel.be> | 2010-04-02 17:56:08 +0200 |
|---|---|---|
| committer | Greg Ungerer <gerg@uclinux.org> | 2010-04-21 13:43:06 +1000 |
| commit | 3732b68f22857201fa09cb82b128f295096a2375 (patch) | |
| tree | 14584810aee0a110704fa0c6f5b858b67d32afab | |
| parent | 6ecaf44e62274cd3496341ee0189bbbc0ae00976 (diff) | |
| download | blackbird-op-linux-3732b68f22857201fa09cb82b128f295096a2375.tar.gz blackbird-op-linux-3732b68f22857201fa09cb82b128f295096a2375.zip | |
m68knommu: fix coldfire tcdrain
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 <phdm@macqel.be>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| -rw-r--r-- | arch/m68k/include/asm/mcfuart.h | 5 | ||||
| -rw-r--r-- | drivers/serial/mcf.c | 4 |
2 files changed, 8 insertions, 1 deletions
diff --git a/arch/m68k/include/asm/mcfuart.h b/arch/m68k/include/asm/mcfuart.h index ef2293873612..01a8716c5fc5 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 7bb5fee639e3..b9f7dfe6c5d5 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, |
