diff options
Diffstat (limited to 'drivers/serial/sh-sci.c')
| -rw-r--r-- | drivers/serial/sh-sci.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c index 0a34fa9e073..e5cf57f482c 100644 --- a/drivers/serial/sh-sci.c +++ b/drivers/serial/sh-sci.c @@ -77,6 +77,9 @@ struct sci_port { /* Break timer */ struct timer_list break_timer; int break_flag; + + /* Port clock */ + struct clk *clk; }; #ifdef CONFIG_SH_KGDB @@ -955,6 +958,8 @@ static int sci_startup(struct uart_port *port) if (s->enable) s->enable(port); + s->clk = clk_get(NULL, "module_clk"); + sci_request_irq(s); sci_start_tx(port); sci_start_rx(port, 1); @@ -972,6 +977,9 @@ static void sci_shutdown(struct uart_port *port) if (s->disable) s->disable(port); + + clk_put(s->clk); + s->clk = NULL; } static void sci_set_termios(struct uart_port *port, struct ktermios *termios, @@ -990,9 +998,7 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios, default: { #if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64) - struct clk *clk = clk_get(NULL, "module_clk"); - t = SCBRR_VALUE(baud, clk_get_rate(clk)); - clk_put(clk); + t = SCBRR_VALUE(baud, clk_get_rate(s->clk)); #else t = SCBRR_VALUE(baud); #endif |