diff options
| author | Alexander Shiyan <shc_work@mail.ru> | 2012-10-14 11:05:32 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-24 22:39:48 +0400 |
| commit | f52ede2ac1159f844994519ae0386def308a296b (patch) | |
| tree | 491861b0f7cba90a85d4f4f53766ebd05f0026c6 /drivers/tty/serial/clps711x.c | |
| parent | 135cc7903593af78c45dc3f8e6a1f528f083e002 (diff) | |
| download | linux-f52ede2ac1159f844994519ae0386def308a296b.tar.xz | |
serial: clps711x: Disable "break"-state before port startup
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/clps711x.c')
| -rw-r--r-- | drivers/tty/serial/clps711x.c | 29 |
1 files changed, 7 insertions, 22 deletions
diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c index 7cf392829ff1..e71508767e1e 100644 --- a/drivers/tty/serial/clps711x.c +++ b/drivers/tty/serial/clps711x.c @@ -231,7 +231,6 @@ static void clps711xuart_break_ctl(struct uart_port *port, int break_state) static int clps711xuart_startup(struct uart_port *port) { struct clps711x_port *s = dev_get_drvdata(port->dev); - unsigned int syscon; int ret; s->tx_enabled[port->line] = 1; @@ -248,37 +247,23 @@ static int clps711xuart_startup(struct uart_port *port) return ret; } - /* - * enable the port - */ - syscon = clps_readl(SYSCON(port)); - syscon |= SYSCON_UARTEN; - clps_writel(syscon, SYSCON(port)); + /* Disable break */ + clps_writel(clps_readl(UBRLCR(port)) & ~UBRLCR_BREAK, UBRLCR(port)); + + /* Enable the port */ + clps_writel(clps_readl(SYSCON(port)) | SYSCON_UARTEN, SYSCON(port)); return 0; } static void clps711xuart_shutdown(struct uart_port *port) { - unsigned int ubrlcr, syscon; - /* Free the interrupts */ devm_free_irq(port->dev, TX_IRQ(port), port); devm_free_irq(port->dev, RX_IRQ(port), port); - /* - * disable the port - */ - syscon = clps_readl(SYSCON(port)); - syscon &= ~SYSCON_UARTEN; - clps_writel(syscon, SYSCON(port)); - - /* - * disable break condition and fifos - */ - ubrlcr = clps_readl(UBRLCR(port)); - ubrlcr &= ~(UBRLCR_FIFOEN | UBRLCR_BREAK); - clps_writel(ubrlcr, UBRLCR(port)); + /* Disable the port */ + clps_writel(clps_readl(SYSCON(port)) & ~SYSCON_UARTEN, SYSCON(port)); } static void |