Commit 14629ed3 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'akpm' (fixes from Andrew) 

Merge misc fixes from Andrew Morton.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mqueue: sys_mq_open: do not call mnt_drop_write() if read-only
  mm/hotplug: only free wait_table if it's allocated by vmalloc
  dma-debug: update DMA debug API to better handle multiple mappings of a buffer
  dma-debug: fix locking bug in check_unmap()
  drivers/rtc/rtc-at91rm9200.c: use a variable for storing IMR
  drivers/video/ep93xx-fb.c: include <linux/io.h> for devm_ioremap()
  drivers/rtc/rtc-da9052.c: fix for rtc device registration
  mm: zone_end_pfn is too small
  poweroff: change orderly_poweroff() to use schedule_work()
  mm/hugetlb: fix total hugetlbfs pages count when using memory overcommit accouting
  printk: Provide a wake_up_klogd() off-case
  irq_work.h: fix warning when CONFIG_IRQ_WORK=n
parents b9cb3bf4 38d78e58

drivers/rtc/rtc-at91rm9200.c

+31 −19
Original line number Diff line number Diff line
@@ -44,6 +44,7 @@ static DECLARE_COMPLETION(at91_rtc_updated); 
static unsigned int at91_alarm_year = AT91_RTC_EPOCH;

static void __iomem *at91_rtc_regs;

static int irq;

static u32 at91_rtc_imr;



/*

 * Decode time/date into rtc_time structure
@@ -108,9 +109,11 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm) 
	cr = at91_rtc_read(AT91_RTC_CR);

	at91_rtc_write(AT91_RTC_CR, cr | AT91_RTC_UPDCAL | AT91_RTC_UPDTIM);



	at91_rtc_imr |= AT91_RTC_ACKUPD;

	at91_rtc_write(AT91_RTC_IER, AT91_RTC_ACKUPD);

	wait_for_completion(&at91_rtc_updated);	/* wait for ACKUPD interrupt */

	at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD);

	at91_rtc_imr &= ~AT91_RTC_ACKUPD;



	at91_rtc_write(AT91_RTC_TIMR,

			  bin2bcd(tm->tm_sec) << 0
@@ -142,7 +145,7 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm) 
	tm->tm_yday = rtc_year_days(tm->tm_mday, tm->tm_mon, tm->tm_year);

	tm->tm_year = at91_alarm_year - 1900;



	alrm->enabled = (at91_rtc_read(AT91_RTC_IMR) & AT91_RTC_ALARM)

	alrm->enabled = (at91_rtc_imr & AT91_RTC_ALARM)

			? 1 : 0;



	dev_dbg(dev, "%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
@@ -168,6 +171,7 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) 
	tm.tm_sec = alrm->time.tm_sec;



	at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM);

	at91_rtc_imr &= ~AT91_RTC_ALARM;

	at91_rtc_write(AT91_RTC_TIMALR,

		  bin2bcd(tm.tm_sec) << 0

		| bin2bcd(tm.tm_min) << 8
@@ -180,6 +184,7 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) 


	if (alrm->enabled) {

		at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM);

		at91_rtc_imr |= AT91_RTC_ALARM;

		at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM);

	}
@@ -196,9 +201,12 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) 


	if (enabled) {

		at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM);

		at91_rtc_imr |= AT91_RTC_ALARM;

		at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM);

	} else

	} else {

		at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM);

		at91_rtc_imr &= ~AT91_RTC_ALARM;

	}



	return 0;

}
@@ -207,12 +215,10 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) 
 */

static int at91_rtc_proc(struct device *dev, struct seq_file *seq)

{

	unsigned long imr = at91_rtc_read(AT91_RTC_IMR);



	seq_printf(seq, "update_IRQ\t: %s\n",

			(imr & AT91_RTC_ACKUPD) ? "yes" : "no");

			(at91_rtc_imr & AT91_RTC_ACKUPD) ? "yes" : "no");

	seq_printf(seq, "periodic_IRQ\t: %s\n",

			(imr & AT91_RTC_SECEV) ? "yes" : "no");

			(at91_rtc_imr & AT91_RTC_SECEV) ? "yes" : "no");



	return 0;

}
@@ -227,7 +233,7 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id) 
	unsigned int rtsr;

	unsigned long events = 0;



	rtsr = at91_rtc_read(AT91_RTC_SR) & at91_rtc_read(AT91_RTC_IMR);

	rtsr = at91_rtc_read(AT91_RTC_SR) & at91_rtc_imr;

	if (rtsr) {		/* this interrupt is shared!  Is it ours? */

		if (rtsr & AT91_RTC_ALARM)

			events |= (RTC_AF | RTC_IRQF);
@@ -291,6 +297,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev) 
	at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM |

					AT91_RTC_SECEV | AT91_RTC_TIMEV |

					AT91_RTC_CALEV);

	at91_rtc_imr = 0;



	ret = request_irq(irq, at91_rtc_interrupt,

				IRQF_SHARED,
@@ -329,6 +336,7 @@ static int __exit at91_rtc_remove(struct platform_device *pdev) 
	at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM |

					AT91_RTC_SECEV | AT91_RTC_TIMEV |

					AT91_RTC_CALEV);

	at91_rtc_imr = 0;

	free_irq(irq, pdev);



	rtc_device_unregister(rtc);
@@ -341,31 +349,35 @@ static int __exit at91_rtc_remove(struct platform_device *pdev) 


/* AT91RM9200 RTC Power management control */



static u32 at91_rtc_imr;

static u32 at91_rtc_bkpimr;





static int at91_rtc_suspend(struct device *dev)

{

	/* this IRQ is shared with DBGU and other hardware which isn't

	 * necessarily doing PM like we are...

	 */

	at91_rtc_imr = at91_rtc_read(AT91_RTC_IMR)

			& (AT91_RTC_ALARM|AT91_RTC_SECEV);

	if (at91_rtc_imr) {

		if (device_may_wakeup(dev))

	at91_rtc_bkpimr = at91_rtc_imr & (AT91_RTC_ALARM|AT91_RTC_SECEV);

	if (at91_rtc_bkpimr) {

		if (device_may_wakeup(dev)) {

			enable_irq_wake(irq);

		else

			at91_rtc_write(AT91_RTC_IDR, at91_rtc_imr);

		} else {

			at91_rtc_write(AT91_RTC_IDR, at91_rtc_bkpimr);

			at91_rtc_imr &= ~at91_rtc_bkpimr;

		}

}

	return 0;

}



static int at91_rtc_resume(struct device *dev)

{

	if (at91_rtc_imr) {

		if (device_may_wakeup(dev))

	if (at91_rtc_bkpimr) {

		if (device_may_wakeup(dev)) {

			disable_irq_wake(irq);

		else

			at91_rtc_write(AT91_RTC_IER, at91_rtc_imr);

		} else {

			at91_rtc_imr |= at91_rtc_bkpimr;

			at91_rtc_write(AT91_RTC_IER, at91_rtc_bkpimr);

		}

	}

	return 0;

}

drivers/rtc/rtc-at91rm9200.h

+0 −1
Original line number Diff line number Diff line
@@ -64,7 +64,6 @@ 
#define	AT91_RTC_SCCR		0x1c			/* Status Clear Command Register */

#define	AT91_RTC_IER		0x20			/* Interrupt Enable Register */

#define	AT91_RTC_IDR		0x24			/* Interrupt Disable Register */

#define	AT91_RTC_IMR		0x28			/* Interrupt Mask Register */



#define	AT91_RTC_VER		0x2c			/* Valid Entry Register */

#define		AT91_RTC_NVTIM		(1 <<  0)		/* Non valid Time */

drivers/rtc/rtc-da9052.c

+3 −5
Original line number Diff line number Diff line
@@ -239,11 +239,9 @@ static int da9052_rtc_probe(struct platform_device *pdev) 


	rtc->da9052 = dev_get_drvdata(pdev->dev.parent);

	platform_set_drvdata(pdev, rtc);

	rtc->irq = platform_get_irq_byname(pdev, "ALM");

	ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,

				da9052_rtc_irq,

				IRQF_TRIGGER_LOW | IRQF_ONESHOT,

				"ALM", rtc);

	rtc->irq =  DA9052_IRQ_ALARM;

	ret = da9052_request_irq(rtc->da9052, rtc->irq, "ALM",

				da9052_rtc_irq, rtc);

	if (ret != 0) {

		rtc_err(rtc->da9052, "irq registration failed: %d\n", ret);

		return ret;

drivers/video/ep93xx-fb.c

+1 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include <linux/slab.h>

#include <linux/clk.h>

#include <linux/fb.h>

#include <linux/io.h>



#include <linux/platform_data/video-ep93xx.h>

include/linux/irq_work.h

+1 −1
Original line number Diff line number Diff line
@@ -37,7 +37,7 @@ void irq_work_sync(struct irq_work *work); 
#ifdef CONFIG_IRQ_WORK

bool irq_work_needs_cpu(void);

#else

static bool irq_work_needs_cpu(void) { return false; }

static inline bool irq_work_needs_cpu(void) { return false; }

#endif



#endif /* _LINUX_IRQ_WORK_H */

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