diff options
Diffstat (limited to 'drivers/watchdog/s3c2410_wdt.c')
-rw-r--r-- | drivers/watchdog/s3c2410_wdt.c | 84 |
1 files changed, 3 insertions, 81 deletions
diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c index d3fc8ed886ff..200ba236a72e 100644 --- a/drivers/watchdog/s3c2410_wdt.c +++ b/drivers/watchdog/s3c2410_wdt.c @@ -562,73 +562,6 @@ static irqreturn_t s3c2410wdt_irq(int irqno, void *param) return IRQ_HANDLED; } -#ifdef CONFIG_ARM_S3C24XX_CPUFREQ - -static int s3c2410wdt_cpufreq_transition(struct notifier_block *nb, - unsigned long val, void *data) -{ - int ret; - struct s3c2410_wdt *wdt = freq_to_wdt(nb); - - if (!s3c2410wdt_is_running(wdt)) - goto done; - - if (val == CPUFREQ_PRECHANGE) { - /* To ensure that over the change we don't cause the - * watchdog to trigger, we perform an keep-alive if - * the watchdog is running. - */ - - s3c2410wdt_keepalive(&wdt->wdt_device); - } else if (val == CPUFREQ_POSTCHANGE) { - s3c2410wdt_stop(&wdt->wdt_device); - - ret = s3c2410wdt_set_heartbeat(&wdt->wdt_device, - wdt->wdt_device.timeout); - - if (ret >= 0) - s3c2410wdt_start(&wdt->wdt_device); - else - goto err; - } - -done: - return 0; - - err: - dev_err(wdt->dev, "cannot set new value for timeout %d\n", - wdt->wdt_device.timeout); - return ret; -} - -static inline int s3c2410wdt_cpufreq_register(struct s3c2410_wdt *wdt) -{ - wdt->freq_transition.notifier_call = s3c2410wdt_cpufreq_transition; - - return cpufreq_register_notifier(&wdt->freq_transition, - CPUFREQ_TRANSITION_NOTIFIER); -} - -static inline void s3c2410wdt_cpufreq_deregister(struct s3c2410_wdt *wdt) -{ - wdt->freq_transition.notifier_call = s3c2410wdt_cpufreq_transition; - - cpufreq_unregister_notifier(&wdt->freq_transition, - CPUFREQ_TRANSITION_NOTIFIER); -} - -#else - -static inline int s3c2410wdt_cpufreq_register(struct s3c2410_wdt *wdt) -{ - return 0; -} - -static inline void s3c2410wdt_cpufreq_deregister(struct s3c2410_wdt *wdt) -{ -} -#endif - static inline unsigned int s3c2410wdt_get_bootstatus(struct s3c2410_wdt *wdt) { unsigned int rst_stat; @@ -761,12 +694,6 @@ static int s3c2410wdt_probe(struct platform_device *pdev) wdt->wdt_device.min_timeout = 1; wdt->wdt_device.max_timeout = s3c2410wdt_max_timeout(wdt); - ret = s3c2410wdt_cpufreq_register(wdt); - if (ret < 0) { - dev_err(dev, "failed to register cpufreq\n"); - goto err_src_clk; - } - watchdog_set_drvdata(&wdt->wdt_device, wdt); /* see if we can actually set the requested timer margin, and if @@ -783,7 +710,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev) S3C2410_WATCHDOG_DEFAULT_TIME); } else { dev_err(dev, "failed to use default timeout\n"); - goto err_cpufreq; + goto err_src_clk; } } @@ -791,7 +718,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev) pdev->name, pdev); if (ret != 0) { dev_err(dev, "failed to install irq (%d)\n", ret); - goto err_cpufreq; + goto err_src_clk; } watchdog_set_nowayout(&wdt->wdt_device, nowayout); @@ -817,7 +744,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev) ret = watchdog_register_device(&wdt->wdt_device); if (ret) - goto err_cpufreq; + goto err_src_clk; ret = s3c2410wdt_enable(wdt, true); if (ret < 0) @@ -839,9 +766,6 @@ static int s3c2410wdt_probe(struct platform_device *pdev) err_unregister: watchdog_unregister_device(&wdt->wdt_device); - err_cpufreq: - s3c2410wdt_cpufreq_deregister(wdt); - err_src_clk: clk_disable_unprepare(wdt->src_clk); @@ -862,8 +786,6 @@ static int s3c2410wdt_remove(struct platform_device *dev) watchdog_unregister_device(&wdt->wdt_device); - s3c2410wdt_cpufreq_deregister(wdt); - clk_disable_unprepare(wdt->src_clk); clk_disable_unprepare(wdt->bus_clk); |