Merge branch 'core/urgent' into core/futexes

Merge reason: this branch was on an pre -rc1 base, merge it up to -rc6+
              to get the latest upstream fixes.

Conflicts:
	kernel/futex.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

4 files changed, 95 insertions, 32 deletions

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index ffe34a12f44..4e9851fc174 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -573,7 +573,7 @@ config RTC_DRV_SA1100
 
 config RTC_DRV_SH
 	tristate "SuperH On-Chip RTC"
-	depends on RTC_CLASS && SUPERH
+	depends on RTC_CLASS && SUPERH && HAVE_CLK
 	help
 	  Say Y here to enable support for the on-chip RTC found in
 	  most SuperH processors.
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index b6d35f50e40..23e10b6263d 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -797,17 +797,15 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
 		goto cleanup2;
 	}
 
-	pr_info("%s: alarms up to one %s%s, %zd bytes nvram%s\n",
-			dev_name(&cmos_rtc.rtc->dev),
-			is_valid_irq(rtc_irq)
-				?  (cmos_rtc.mon_alrm
-					? "year"
-					: (cmos_rtc.day_alrm
-						? "month" : "day"))
-				: "no",
-			cmos_rtc.century ? ", y3k" : "",
-			nvram.size,
-			is_hpet_enabled() ? ", hpet irqs" : "");
+	pr_info("%s: %s%s, %zd bytes nvram%s\n",
+		dev_name(&cmos_rtc.rtc->dev),
+		!is_valid_irq(rtc_irq) ? "no alarms" :
+			cmos_rtc.mon_alrm ? "alarms up to one year" :
+			cmos_rtc.day_alrm ? "alarms up to one month" :
+			"alarms up to one day",
+		cmos_rtc.century ? ", y3k" : "",
+		nvram.size,
+		is_hpet_enabled() ? ", hpet irqs" : "");
 
 	return 0;
 
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index 4898f7fe851..d7310adb715 100644
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -1,7 +1,7 @@
 /*
  * SuperH On-Chip RTC Support
  *
- * Copyright (C) 2006, 2007, 2008  Paul Mundt
+ * Copyright (C) 2006 - 2009  Paul Mundt
  * Copyright (C) 2006  Jamie Lenehan
  * Copyright (C) 2008  Angelo Castello
  *
@@ -25,10 +25,11 @@
 #include <linux/spinlock.h>
 #include <linux/io.h>
 #include <linux/log2.h>
+#include <linux/clk.h>
 #include <asm/rtc.h>
 
 #define DRV_NAME	"sh-rtc"
-#define DRV_VERSION	"0.2.1"
+#define DRV_VERSION	"0.2.2"
 
 #define RTC_REG(r)	((r) * rtc_reg_size)
 
@@ -87,16 +88,17 @@
 #define RCR2_START	0x01	/* Start bit               */
 
 struct sh_rtc {
-	void __iomem *regbase;
-	unsigned long regsize;
-	struct resource *res;
-	int alarm_irq;
-	int periodic_irq;
-	int carry_irq;
-	struct rtc_device *rtc_dev;
-	spinlock_t lock;
-	unsigned long capabilities;	/* See asm-sh/rtc.h for cap bits */
-	unsigned short periodic_freq;
+	void __iomem		*regbase;
+	unsigned long		regsize;
+	struct resource		*res;
+	int			alarm_irq;
+	int			periodic_irq;
+	int			carry_irq;
+	struct clk		*clk;
+	struct rtc_device	*rtc_dev;
+	spinlock_t		lock;
+	unsigned long		capabilities;	/* See asm/rtc.h for cap bits */
+	unsigned short		periodic_freq;
 };
 
 static int __sh_rtc_interrupt(struct sh_rtc *rtc)
@@ -294,10 +296,10 @@ static inline void sh_rtc_setaie(struct device *dev, unsigned int enable)
 
 	tmp = readb(rtc->regbase + RCR1);
 
-	if (!enable)
-		tmp &= ~RCR1_AIE;
-	else
+	if (enable)
 		tmp |= RCR1_AIE;
+	else
+		tmp &= ~RCR1_AIE;
 
 	writeb(tmp, rtc->regbase + RCR1);
 
@@ -618,6 +620,7 @@ static int sh_rtc_irq_set_freq(struct device *dev, int freq)
 {
 	if (!is_power_of_2(freq))
 		return -EINVAL;
+
 	return sh_rtc_ioctl(dev, RTC_IRQP_SET, freq);
 }
 
@@ -637,7 +640,8 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
 	struct sh_rtc *rtc;
 	struct resource *res;
 	struct rtc_time r;
-	int ret;
+	char clk_name[6];
+	int clk_id, ret;
 
 	rtc = kzalloc(sizeof(struct sh_rtc), GFP_KERNEL);
 	if (unlikely(!rtc))
@@ -652,6 +656,7 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "No IRQ resource\n");
 		goto err_badres;
 	}
+
 	rtc->periodic_irq = ret;
 	rtc->carry_irq = platform_get_irq(pdev, 1);
 	rtc->alarm_irq = platform_get_irq(pdev, 2);
@@ -663,7 +668,7 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
 		goto err_badres;
 	}
 
-	rtc->regsize = res->end - res->start + 1;
+	rtc->regsize = resource_size(res);
 
 	rtc->res = request_mem_region(res->start, rtc->regsize, pdev->name);
 	if (unlikely(!rtc->res)) {
@@ -677,6 +682,26 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
 		goto err_badmap;
 	}
 
+	clk_id = pdev->id;
+	/* With a single device, the clock id is still "rtc0" */
+	if (clk_id < 0)
+		clk_id = 0;
+
+	snprintf(clk_name, sizeof(clk_name), "rtc%d", clk_id);
+
+	rtc->clk = clk_get(&pdev->dev, clk_name);
+	if (IS_ERR(rtc->clk)) {
+		/*
+		 * No error handling for rtc->clk intentionally, not all
+		 * platforms will have a unique clock for the RTC, and
+		 * the clk API can handle the struct clk pointer being
+		 * NULL.
+		 */
+		rtc->clk = NULL;
+	}
+
+	clk_enable(rtc->clk);
+
 	rtc->rtc_dev = rtc_device_register("sh", &pdev->dev,
 					   &sh_rtc_ops, THIS_MODULE);
 	if (IS_ERR(rtc->rtc_dev)) {
@@ -759,6 +784,8 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
 	return 0;
 
 err_unmap:
+	clk_disable(rtc->clk);
+	clk_put(rtc->clk);
 	iounmap(rtc->regbase);
 err_badmap:
 	release_resource(rtc->res);
@@ -780,6 +807,7 @@ static int __devexit sh_rtc_remove(struct platform_device *pdev)
 	sh_rtc_setcie(&pdev->dev, 0);
 
 	free_irq(rtc->periodic_irq, rtc);
+
 	if (rtc->carry_irq > 0) {
 		free_irq(rtc->carry_irq, rtc);
 		free_irq(rtc->alarm_irq, rtc);
@@ -789,16 +817,55 @@ static int __devexit sh_rtc_remove(struct platform_device *pdev)
 
 	iounmap(rtc->regbase);
 
+	clk_disable(rtc->clk);
+	clk_put(rtc->clk);
+
 	platform_set_drvdata(pdev, NULL);
 
 	kfree(rtc);
 
 	return 0;
 }
+
+static void sh_rtc_set_irq_wake(struct device *dev, int enabled)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct sh_rtc *rtc = platform_get_drvdata(pdev);
+
+	set_irq_wake(rtc->periodic_irq, enabled);
+
+	if (rtc->carry_irq > 0) {
+		set_irq_wake(rtc->carry_irq, enabled);
+		set_irq_wake(rtc->alarm_irq, enabled);
+	}
+}
+
+static int sh_rtc_suspend(struct device *dev)
+{
+	if (device_may_wakeup(dev))
+		sh_rtc_set_irq_wake(dev, 1);
+
+	return 0;
+}
+
+static int sh_rtc_resume(struct device *dev)
+{
+	if (device_may_wakeup(dev))
+		sh_rtc_set_irq_wake(dev, 0);
+
+	return 0;
+}
+
+static struct dev_pm_ops sh_rtc_dev_pm_ops = {
+	.suspend = sh_rtc_suspend,
+	.resume = sh_rtc_resume,
+};
+
 static struct platform_driver sh_rtc_platform_driver = {
 	.driver		= {
 		.name	= DRV_NAME,
 		.owner	= THIS_MODULE,
+		.pm	= &sh_rtc_dev_pm_ops,
 	},
 	.probe		= sh_rtc_probe,
 	.remove		= __devexit_p(sh_rtc_remove),
diff --git a/drivers/rtc/rtc-twl4030.c b/drivers/rtc/rtc-twl4030.c
index a6341e4f9a0..9c8c70c497d 100644
--- a/drivers/rtc/rtc-twl4030.c
+++ b/drivers/rtc/rtc-twl4030.c
@@ -495,9 +495,7 @@ static int twl4030_rtc_suspend(struct platform_device *pdev, pm_message_t state)
 {
 	irqstat = rtc_irq_bits;
 
-	/* REVISIT alarm may need to wake us from sleep */
-	mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M |
-			 BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+	mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
 	return 0;
 }