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| author | dmitry pervushin <dimka@nomadgs.com> | 2007-04-24 13:41:12 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@hera.kernel.org> | 2007-05-07 02:11:56 +0000 |
| commit | 1534a3b3dc1cbab006f0add253be1b095d738b82 (patch) | |
| tree | 198327387726950113863d60ecc19aaf63680218 /drivers/serial/sh-sci.c | |
| parent | 1929cb340b74904c130fdf3de3fe5bbedb68a5aa (diff) | |
| download | blackbird-op-linux-1534a3b3dc1cbab006f0add253be1b095d738b82.tar.gz blackbird-op-linux-1534a3b3dc1cbab006f0add253be1b095d738b82.zip | |
serial: sh-sci: Fix module clock refcounting.
This adds the enable/disable hooks for the port clock to sh-sci.
Signed-off-by: dmitry pervushin <dimka@nomadgs.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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 0a34fa9e0733..e5cf57f482cf 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 |
