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Commit 8d276377 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'akpm' (fixes from Andrew) 

Merge patches from Andrew Morton:
  "13 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: memcg: do not allow task about to OOM kill to bypass the limit
  mm: memcg: fix race condition between memcg teardown and swapin
  thp: move preallocated PTE page table on move_huge_pmd()
  mfd/rtc: s5m: fix register updating by adding regmap for RTC
  rtc: s5m: enable IRQ wake during suspend
  rtc: s5m: limit endless loop waiting for register update
  rtc: s5m: fix unsuccesful IRQ request during probe
  drivers/rtc/rtc-s5m.c: fix info->rtc assignment
  include/linux/kernel.h: make might_fault() a nop for !MMU
  drivers/rtc/rtc-at91rm9200.c: correct alarm over day/month wrap
  procfs: also fix proc_reg_get_unmapped_area() for !MMU case
  mm: memcg: do not declare OOM from __GFP_NOFAIL allocations
  include/linux/hugetlb.h: make isolate_huge_page() an inline
parents 54fb723c 1f14c1ac

drivers/mfd/sec-core.c

+22 −8
Original line number Diff line number Diff line
@@ -81,31 +81,31 @@ static struct of_device_id sec_dt_match[] = { 


int sec_reg_read(struct sec_pmic_dev *sec_pmic, u8 reg, void *dest)

{

	return regmap_read(sec_pmic->regmap, reg, dest);

	return regmap_read(sec_pmic->regmap_pmic, reg, dest);

}

EXPORT_SYMBOL_GPL(sec_reg_read);



int sec_bulk_read(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf)

{

	return regmap_bulk_read(sec_pmic->regmap, reg, buf, count);

	return regmap_bulk_read(sec_pmic->regmap_pmic, reg, buf, count);

}

EXPORT_SYMBOL_GPL(sec_bulk_read);



int sec_reg_write(struct sec_pmic_dev *sec_pmic, u8 reg, u8 value)

{

	return regmap_write(sec_pmic->regmap, reg, value);

	return regmap_write(sec_pmic->regmap_pmic, reg, value);

}

EXPORT_SYMBOL_GPL(sec_reg_write);



int sec_bulk_write(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf)

{

	return regmap_raw_write(sec_pmic->regmap, reg, buf, count);

	return regmap_raw_write(sec_pmic->regmap_pmic, reg, buf, count);

}

EXPORT_SYMBOL_GPL(sec_bulk_write);



int sec_reg_update(struct sec_pmic_dev *sec_pmic, u8 reg, u8 val, u8 mask)

{

	return regmap_update_bits(sec_pmic->regmap, reg, mask, val);

	return regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, val);

}

EXPORT_SYMBOL_GPL(sec_reg_update);
@@ -166,6 +166,11 @@ static struct regmap_config s5m8767_regmap_config = { 
	.cache_type = REGCACHE_FLAT,

};



static const struct regmap_config sec_rtc_regmap_config = {

	.reg_bits = 8,

	.val_bits = 8,

};



#ifdef CONFIG_OF

/*

 * Only the common platform data elements for s5m8767 are parsed here from the
@@ -266,9 +271,9 @@ static int sec_pmic_probe(struct i2c_client *i2c, 
		break;

	}



	sec_pmic->regmap = devm_regmap_init_i2c(i2c, regmap);

	if (IS_ERR(sec_pmic->regmap)) {

		ret = PTR_ERR(sec_pmic->regmap);

	sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);

	if (IS_ERR(sec_pmic->regmap_pmic)) {

		ret = PTR_ERR(sec_pmic->regmap_pmic);

		dev_err(&i2c->dev, "Failed to allocate register map: %d\n",

			ret);

		return ret;
@@ -277,6 +282,15 @@ static int sec_pmic_probe(struct i2c_client *i2c, 
	sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);

	i2c_set_clientdata(sec_pmic->rtc, sec_pmic);



	sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc,

			&sec_rtc_regmap_config);

	if (IS_ERR(sec_pmic->regmap_rtc)) {

		ret = PTR_ERR(sec_pmic->regmap_rtc);

		dev_err(&i2c->dev, "Failed to allocate RTC register map: %d\n",

			ret);

		return ret;

	}



	if (pdata && pdata->cfg_pmic_irq)

		pdata->cfg_pmic_irq();

drivers/mfd/sec-irq.c

+3 −3
Original line number Diff line number Diff line
@@ -280,19 +280,19 @@ int sec_irq_init(struct sec_pmic_dev *sec_pmic) 


	switch (type) {

	case S5M8763X:

		ret = regmap_add_irq_chip(sec_pmic->regmap, sec_pmic->irq,

		ret = regmap_add_irq_chip(sec_pmic->regmap_pmic, sec_pmic->irq,

				  IRQF_TRIGGER_FALLING | IRQF_ONESHOT,

				  sec_pmic->irq_base, &s5m8763_irq_chip,

				  &sec_pmic->irq_data);

		break;

	case S5M8767X:

		ret = regmap_add_irq_chip(sec_pmic->regmap, sec_pmic->irq,

		ret = regmap_add_irq_chip(sec_pmic->regmap_pmic, sec_pmic->irq,

				  IRQF_TRIGGER_FALLING | IRQF_ONESHOT,

				  sec_pmic->irq_base, &s5m8767_irq_chip,

				  &sec_pmic->irq_data);

		break;

	case S2MPS11X:

		ret = regmap_add_irq_chip(sec_pmic->regmap, sec_pmic->irq,

		ret = regmap_add_irq_chip(sec_pmic->regmap_pmic, sec_pmic->irq,

				  IRQF_TRIGGER_FALLING | IRQF_ONESHOT,

				  sec_pmic->irq_base, &s2mps11_irq_chip,

				  &sec_pmic->irq_data);

drivers/regulator/s5m8767.c

+1 −1
Original line number Diff line number Diff line
@@ -925,7 +925,7 @@ static int s5m8767_pmic_probe(struct platform_device *pdev) 
		config.dev = s5m8767->dev;

		config.init_data = pdata->regulators[i].initdata;

		config.driver_data = s5m8767;

		config.regmap = iodev->regmap;

		config.regmap = iodev->regmap_pmic;

		config.of_node = pdata->regulators[i].reg_node;



		rdev[i] = devm_regulator_register(&pdev->dev, &regulators[id],

drivers/rtc/rtc-at91rm9200.c

+2 −0
Original line number Diff line number Diff line
@@ -220,6 +220,8 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) 


	at91_alarm_year = tm.tm_year;



	tm.tm_mon = alrm->time.tm_mon;

	tm.tm_mday = alrm->time.tm_mday;

	tm.tm_hour = alrm->time.tm_hour;

	tm.tm_min = alrm->time.tm_min;

	tm.tm_sec = alrm->time.tm_sec;

drivers/rtc/rtc-s5m.c

+85 −33
Original line number Diff line number Diff line
@@ -28,10 +28,20 @@ 
#include <linux/mfd/samsung/irq.h>

#include <linux/mfd/samsung/rtc.h>



/*

 * Maximum number of retries for checking changes in UDR field

 * of SEC_RTC_UDR_CON register (to limit possible endless loop).

 *

 * After writing to RTC registers (setting time or alarm) read the UDR field

 * in SEC_RTC_UDR_CON register. UDR is auto-cleared when data have

 * been transferred.

 */

#define UDR_READ_RETRY_CNT	5



struct s5m_rtc_info {

	struct device *dev;

	struct sec_pmic_dev *s5m87xx;

	struct regmap *rtc;

	struct regmap *regmap;

	struct rtc_device *rtc_dev;

	int irq;

	int device_type;
@@ -84,12 +94,31 @@ static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data) 
	}

}



/*

 * Read RTC_UDR_CON register and wait till UDR field is cleared.

 * This indicates that time/alarm update ended.

 */

static inline int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info)

{

	int ret, retry = UDR_READ_RETRY_CNT;

	unsigned int data;



	do {

		ret = regmap_read(info->regmap, SEC_RTC_UDR_CON, &data);

	} while (--retry && (data & RTC_UDR_MASK) && !ret);



	if (!retry)

		dev_err(info->dev, "waiting for UDR update, reached max number of retries\n");



	return ret;

}



static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info)

{

	int ret;

	unsigned int data;



	ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);

	ret = regmap_read(info->regmap, SEC_RTC_UDR_CON, &data);

	if (ret < 0) {

		dev_err(info->dev, "failed to read update reg(%d)\n", ret);

		return ret;
@@ -98,15 +127,13 @@ static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info) 
	data |= RTC_TIME_EN_MASK;

	data |= RTC_UDR_MASK;



	ret = regmap_write(info->rtc, SEC_RTC_UDR_CON, data);

	ret = regmap_write(info->regmap, SEC_RTC_UDR_CON, data);

	if (ret < 0) {

		dev_err(info->dev, "failed to write update reg(%d)\n", ret);

		return ret;

	}



	do {

		ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);

	} while ((data & RTC_UDR_MASK) && !ret);

	ret = s5m8767_wait_for_udr_update(info);



	return ret;

}
@@ -116,7 +143,7 @@ static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) 
	int ret;

	unsigned int data;



	ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);

	ret = regmap_read(info->regmap, SEC_RTC_UDR_CON, &data);

	if (ret < 0) {

		dev_err(info->dev, "%s: fail to read update reg(%d)\n",

			__func__, ret);
@@ -126,16 +153,14 @@ static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info) 
	data &= ~RTC_TIME_EN_MASK;

	data |= RTC_UDR_MASK;



	ret = regmap_write(info->rtc, SEC_RTC_UDR_CON, data);

	ret = regmap_write(info->regmap, SEC_RTC_UDR_CON, data);

	if (ret < 0) {

		dev_err(info->dev, "%s: fail to write update reg(%d)\n",

			__func__, ret);

		return ret;

	}



	do {

		ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &data);

	} while ((data & RTC_UDR_MASK) && !ret);

	ret = s5m8767_wait_for_udr_update(info);



	return ret;

}
@@ -178,7 +203,7 @@ static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm) 
	u8 data[8];

	int ret;



	ret = regmap_bulk_read(info->rtc, SEC_RTC_SEC, data, 8);

	ret = regmap_bulk_read(info->regmap, SEC_RTC_SEC, data, 8);

	if (ret < 0)

		return ret;
@@ -226,7 +251,7 @@ static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm) 
		1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday,

		tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_wday);



	ret = regmap_raw_write(info->rtc, SEC_RTC_SEC, data, 8);

	ret = regmap_raw_write(info->regmap, SEC_RTC_SEC, data, 8);

	if (ret < 0)

		return ret;
@@ -242,20 +267,20 @@ static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) 
	unsigned int val;

	int ret, i;



	ret = regmap_bulk_read(info->rtc, SEC_ALARM0_SEC, data, 8);

	ret = regmap_bulk_read(info->regmap, SEC_ALARM0_SEC, data, 8);

	if (ret < 0)

		return ret;



	switch (info->device_type) {

	case S5M8763X:

		s5m8763_data_to_tm(data, &alrm->time);

		ret = regmap_read(info->rtc, SEC_ALARM0_CONF, &val);

		ret = regmap_read(info->regmap, SEC_ALARM0_CONF, &val);

		if (ret < 0)

			return ret;



		alrm->enabled = !!val;



		ret = regmap_read(info->rtc, SEC_RTC_STATUS, &val);

		ret = regmap_read(info->regmap, SEC_RTC_STATUS, &val);

		if (ret < 0)

			return ret;
@@ -278,7 +303,7 @@ static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) 
		}



		alrm->pending = 0;

		ret = regmap_read(info->rtc, SEC_RTC_STATUS, &val);

		ret = regmap_read(info->regmap, SEC_RTC_STATUS, &val);

		if (ret < 0)

			return ret;

		break;
@@ -301,7 +326,7 @@ static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) 
	int ret, i;

	struct rtc_time tm;



	ret = regmap_bulk_read(info->rtc, SEC_ALARM0_SEC, data, 8);

	ret = regmap_bulk_read(info->regmap, SEC_ALARM0_SEC, data, 8);

	if (ret < 0)

		return ret;
@@ -312,14 +337,14 @@ static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info) 


	switch (info->device_type) {

	case S5M8763X:

		ret = regmap_write(info->rtc, SEC_ALARM0_CONF, 0);

		ret = regmap_write(info->regmap, SEC_ALARM0_CONF, 0);

		break;



	case S5M8767X:

		for (i = 0; i < 7; i++)

			data[i] &= ~ALARM_ENABLE_MASK;



		ret = regmap_raw_write(info->rtc, SEC_ALARM0_SEC, data, 8);

		ret = regmap_raw_write(info->regmap, SEC_ALARM0_SEC, data, 8);

		if (ret < 0)

			return ret;
@@ -341,7 +366,7 @@ static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) 
	u8 alarm0_conf;

	struct rtc_time tm;



	ret = regmap_bulk_read(info->rtc, SEC_ALARM0_SEC, data, 8);

	ret = regmap_bulk_read(info->regmap, SEC_ALARM0_SEC, data, 8);

	if (ret < 0)

		return ret;
@@ -353,7 +378,7 @@ static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) 
	switch (info->device_type) {

	case S5M8763X:

		alarm0_conf = 0x77;

		ret = regmap_write(info->rtc, SEC_ALARM0_CONF, alarm0_conf);

		ret = regmap_write(info->regmap, SEC_ALARM0_CONF, alarm0_conf);

		break;



	case S5M8767X:
@@ -368,7 +393,7 @@ static int s5m_rtc_start_alarm(struct s5m_rtc_info *info) 
		if (data[RTC_YEAR1] & 0x7f)

			data[RTC_YEAR1] |= ALARM_ENABLE_MASK;



		ret = regmap_raw_write(info->rtc, SEC_ALARM0_SEC, data, 8);

		ret = regmap_raw_write(info->regmap, SEC_ALARM0_SEC, data, 8);

		if (ret < 0)

			return ret;

		ret = s5m8767_rtc_set_alarm_reg(info);
@@ -410,7 +435,7 @@ static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 
	if (ret < 0)

		return ret;



	ret = regmap_raw_write(info->rtc, SEC_ALARM0_SEC, data, 8);

	ret = regmap_raw_write(info->regmap, SEC_ALARM0_SEC, data, 8);

	if (ret < 0)

		return ret;
@@ -455,7 +480,7 @@ static const struct rtc_class_ops s5m_rtc_ops = { 
static void s5m_rtc_enable_wtsr(struct s5m_rtc_info *info, bool enable)

{

	int ret;

	ret = regmap_update_bits(info->rtc, SEC_WTSR_SMPL_CNTL,

	ret = regmap_update_bits(info->regmap, SEC_WTSR_SMPL_CNTL,

				 WTSR_ENABLE_MASK,

				 enable ? WTSR_ENABLE_MASK : 0);

	if (ret < 0)
@@ -466,7 +491,7 @@ static void s5m_rtc_enable_wtsr(struct s5m_rtc_info *info, bool enable) 
static void s5m_rtc_enable_smpl(struct s5m_rtc_info *info, bool enable)

{

	int ret;

	ret = regmap_update_bits(info->rtc, SEC_WTSR_SMPL_CNTL,

	ret = regmap_update_bits(info->regmap, SEC_WTSR_SMPL_CNTL,

				 SMPL_ENABLE_MASK,

				 enable ? SMPL_ENABLE_MASK : 0);

	if (ret < 0)
@@ -481,7 +506,7 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) 
	int ret;

	struct rtc_time tm;



	ret = regmap_read(info->rtc, SEC_RTC_UDR_CON, &tp_read);

	ret = regmap_read(info->regmap, SEC_RTC_UDR_CON, &tp_read);

	if (ret < 0) {

		dev_err(info->dev, "%s: fail to read control reg(%d)\n",

			__func__, ret);
@@ -493,7 +518,7 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) 
	data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);



	info->rtc_24hr_mode = 1;

	ret = regmap_raw_write(info->rtc, SEC_ALARM0_CONF, data, 2);

	ret = regmap_raw_write(info->regmap, SEC_ALARM0_CONF, data, 2);

	if (ret < 0) {

		dev_err(info->dev, "%s: fail to write controlm reg(%d)\n",

			__func__, ret);
@@ -515,7 +540,7 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) 
		ret = s5m_rtc_set_time(info->dev, &tm);

	}



	ret = regmap_update_bits(info->rtc, SEC_RTC_UDR_CON,

	ret = regmap_update_bits(info->regmap, SEC_RTC_UDR_CON,

				 RTC_TCON_MASK, tp_read | RTC_TCON_MASK);

	if (ret < 0)

		dev_err(info->dev, "%s: fail to update TCON reg(%d)\n",
@@ -542,17 +567,19 @@ static int s5m_rtc_probe(struct platform_device *pdev) 


	info->dev = &pdev->dev;

	info->s5m87xx = s5m87xx;

	info->rtc = s5m87xx->rtc;

	info->regmap = s5m87xx->regmap_rtc;

	info->device_type = s5m87xx->device_type;

	info->wtsr_smpl = s5m87xx->wtsr_smpl;



	switch (pdata->device_type) {

	case S5M8763X:

		info->irq = s5m87xx->irq_base + S5M8763_IRQ_ALARM0;

		info->irq = regmap_irq_get_virq(s5m87xx->irq_data,

				S5M8763_IRQ_ALARM0);

		break;



	case S5M8767X:

		info->irq = s5m87xx->irq_base + S5M8767_IRQ_RTCA1;

		info->irq = regmap_irq_get_virq(s5m87xx->irq_data,

				S5M8767_IRQ_RTCA1);

		break;



	default:
@@ -596,7 +623,7 @@ static void s5m_rtc_shutdown(struct platform_device *pdev) 
	if (info->wtsr_smpl) {

		for (i = 0; i < 3; i++) {

			s5m_rtc_enable_wtsr(info, false);

			regmap_read(info->rtc, SEC_WTSR_SMPL_CNTL, &val);

			regmap_read(info->regmap, SEC_WTSR_SMPL_CNTL, &val);

			pr_debug("%s: WTSR_SMPL reg(0x%02x)\n", __func__, val);

			if (val & WTSR_ENABLE_MASK)

				pr_emerg("%s: fail to disable WTSR\n",
@@ -612,6 +639,30 @@ static void s5m_rtc_shutdown(struct platform_device *pdev) 
	s5m_rtc_enable_smpl(info, false);

}



static int s5m_rtc_resume(struct device *dev)

{

	struct s5m_rtc_info *info = dev_get_drvdata(dev);

	int ret = 0;



	if (device_may_wakeup(dev))

		ret = disable_irq_wake(info->irq);



	return ret;

}



static int s5m_rtc_suspend(struct device *dev)

{

	struct s5m_rtc_info *info = dev_get_drvdata(dev);

	int ret = 0;



	if (device_may_wakeup(dev))

		ret = enable_irq_wake(info->irq);



	return ret;

}



static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume);



static const struct platform_device_id s5m_rtc_id[] = {

	{ "s5m-rtc", 0 },

};
@@ -620,6 +671,7 @@ static struct platform_driver s5m_rtc_driver = { 
	.driver		= {

		.name	= "s5m-rtc",

		.owner	= THIS_MODULE,

		.pm	= &s5m_rtc_pm_ops,

	},

	.probe		= s5m_rtc_probe,

	.shutdown	= s5m_rtc_shutdown,