Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Pull more powerpc updates from Ben Herrenschmidt:
 "Here are a few more powerpc things for you.

  So you'll find here the conversion of the two new firmware sysfs
  interfaces to the new API for self-removing files that Greg and Tejun
  introduced, so they can finally remove the old one.

  I'm also reverting the hwmon driver for powernv.  I shouldn't have
  merged it, I got a bit carried away here.  I hadn't realized it was
  never CCed to the relevant maintainer(s) and list(s), and happens to
  have some issues so I'm taking it out and it will come back via the
  proper channels.

  The rest is a bunch of LE fixes (argh, some of the new stuff was
  broken on LE, I really need to start testing LE myself !) and various
  random fixes here and there.

  Finally one bit that's not strictly a fix, which is the HVC OPAL
  change to "kick" the HVC thread when the firmware tells us there is
  new incoming data.  I don't feel like waiting for this one, it's
  simple enough, and it makes a big difference in console responsiveness
  which is good for my nerves"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (26 commits)
  powerpc/powernv Adapt opal-elog and opal-dump to new sysfs_remove_file_self
  Revert "powerpc/powernv: hwmon driver for power values, fan rpm and temperature"
  power, sched: stop updating inside arch_update_cpu_topology() when nothing to be update
  powerpc/le: Avoid creatng R_PPC64_TOCSAVE relocations for modules.
  arch/powerpc: Use RCU_INIT_POINTER(x, NULL) in platforms/cell/spu_syscalls.c
  powerpc/opal: Add missing include
  powerpc: Convert last uses of __FUNCTION__ to __func__
  powerpc: Add lq/stq emulation
  powerpc/powernv: Add invalid OPAL call
  powerpc/powernv: Add OPAL message log interface
  powerpc/book3s: Fix mc_recoverable_range buffer overrun issue.
  powerpc: Remove dead code in sycall entry
  powerpc: Use of_node_init() for the fakenode in msi_bitmap.c
  powerpc/mm: NUMA pte should be handled via slow path in get_user_pages_fast()
  powerpc/powernv: Fix endian issues with sensor code
  powerpc/powernv: Fix endian issues with OPAL async code
  tty/hvc_opal: Kick the HVC thread on OPAL console events
  powerpc/powernv: Add opal_notifier_unregister() and export to modules
  powerpc/ppc64: Do not turn AIL (reloc-on interrupts) too early
  powerpc/ppc64: Gracefully handle early interrupts
  ...

3 files changed, 0 insertions, 538 deletions

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index b13172c..bc196f4 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -554,14 +554,6 @@ config SENSORS_IBMPEX
 	  This driver can also be built as a module.  If so, the module
 	  will be called ibmpex.
 
-config SENSORS_IBMPOWERNV
-	tristate "IBM PowerNv Platform temperature/power/fan sensor"
-	depends on PPC_POWERNV
-	default y
-	help
-	  If you say yes here you get support for the temperature/fan/power
-	  sensors on your platform.
-
 config SENSORS_IIO_HWMON
 	tristate "Hwmon driver that uses channels specified via iio maps"
 	depends on IIO
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 199c401..c48f987 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -71,7 +71,6 @@ obj-$(CONFIG_SENSORS_ULTRA45)	+= ultra45_env.o
 obj-$(CONFIG_SENSORS_I5K_AMB)	+= i5k_amb.o
 obj-$(CONFIG_SENSORS_IBMAEM)	+= ibmaem.o
 obj-$(CONFIG_SENSORS_IBMPEX)	+= ibmpex.o
-obj-$(CONFIG_SENSORS_IBMPOWERNV)+= ibmpowernv.o
 obj-$(CONFIG_SENSORS_IIO_HWMON) += iio_hwmon.o
 obj-$(CONFIG_SENSORS_INA209)	+= ina209.o
 obj-$(CONFIG_SENSORS_INA2XX)	+= ina2xx.o
diff --git a/drivers/hwmon/ibmpowernv.c b/drivers/hwmon/ibmpowernv.c
deleted file mode 100644
index b7b1297..0000000
--- a/drivers/hwmon/ibmpowernv.c
+++ /dev/null
@@ -1,529 +0,0 @@
-/*
- * hwmon driver for temperature/power/fan on IBM PowerNV platform
- * Copyright (C) 2013 IBM
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/of.h>
-#include <linux/slab.h>
-
-#include <linux/jiffies.h>
-#include <linux/platform_device.h>
-#include <asm/opal.h>
-#include <linux/err.h>
-
-MODULE_DESCRIPTION("IBM PowerNV Platform power/temp/fan sensor hwmon module");
-MODULE_LICENSE("GPL");
-
-#define MAX_ATTR_LENGTH		32
-
-/* Device tree sensor name prefixes. The device tree has the names in the
- * format "cooling-fan#2-faulted" where the "cooling-fan" is the sensor type,
- * 2 is the sensor count, and "faulted" is the sensor data attribute type.
- */
-#define DT_FAULT_ATTR_SUFFIX		"faulted"
-#define DT_DATA_ATTR_SUFFIX		"data"
-#define DT_THRESHOLD_ATTR_SUFFIX	"thrs"
-
-enum sensors {
-	FAN,
-	TEMPERATURE,
-	POWERSUPPLY,
-	POWER,
-	MAX_SENSOR_TYPE,
-};
-
-enum attributes {
-	INPUT,
-	MINIMUM,
-	MAXIMUM,
-	FAULT,
-	MAX_ATTR_TYPES
-};
-
-static struct sensor_name {
-	char *name;
-	char *compaible;
-} sensor_names[] = {
-		{"fan-sensor", "ibm,opal-sensor-cooling-fan"},
-		{"amb-temp-sensor", "ibm,opal-sensor-amb-temp"},
-		{"power-sensor", "ibm,opal-sensor-power-supply"},
-		{"power", "ibm,opal-sensor-power"}
-};
-
-static const char * const attribute_type_table[] = {
-	"input",
-	"min",
-	"max",
-	"fault",
-	NULL
-};
-
-struct pdev_entry {
-	struct list_head list;
-	struct platform_device *pdev;
-	enum sensors type;
-};
-
-static LIST_HEAD(pdev_list);
-
-/* The sensors are categorised on type.
- *
- * The sensors of same type are categorised under a common platform device.
- * So, The pdev is shared by all sensors of same type.
- * Ex : temp1_input, temp1_max, temp2_input,temp2_max all share same platform
- * device.
- *
- * "sensor_data" is the Platform device specific data.
- * There is one hwmon_device instance for all the sensors of same type.
- * This also holds the list of all sensors with same type but different
- * attribute and index.
- */
-struct sensor_specific_data {
-	u32 sensor_id; /* The hex value as in the device tree */
-	u32 sensor_index; /* The sensor instance index */
-	struct sensor_device_attribute sd_attr;
-	enum attributes attr_type;
-	char attr_name[64];
-};
-
-struct sensor_data {
-	struct device *hwmon_dev;
-	struct list_head sensor_list;
-	struct device_attribute name_attr;
-};
-
-struct  sensor_entry {
-	struct list_head list;
-	struct sensor_specific_data *sensor_data;
-};
-
-static struct platform_device *powernv_sensor_get_pdev(enum sensors type)
-{
-	struct pdev_entry *p;
-	list_for_each_entry(p, &pdev_list, list)
-		if (p->type == type)
-			return p->pdev;
-
-	return NULL;
-}
-
-static struct sensor_specific_data *powernv_sensor_get_sensor_data(
-					struct sensor_data *pdata,
-					int index, enum attributes attr_type)
-{
-	struct sensor_entry *p;
-	list_for_each_entry(p, &pdata->sensor_list, list)
-		if ((p->sensor_data->sensor_index == index) &&
-		    (attr_type == p->sensor_data->attr_type))
-			return p->sensor_data;
-
-	return NULL;
-}
-
-static ssize_t show_name(struct device *dev,
-				struct device_attribute *devattr, char *buf)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-
-	return sprintf(buf, "%s\n", pdev->name);
-}
-
-/* Note: Data from the sensors for each sensor type needs to be converted to
- * the dimension appropriate.
- */
-static ssize_t show_sensor(struct device *dev,
-				struct device_attribute *devattr, char *buf)
-{
-	struct sensor_device_attribute *sd_attr = to_sensor_dev_attr(devattr);
-	struct platform_device *pdev = to_platform_device(dev);
-	struct sensor_data *pdata = platform_get_drvdata(pdev);
-	struct sensor_specific_data *tdata = NULL;
-	enum sensors sensor_type = pdev->id;
-	u32 x = -1;
-	int ret;
-
-	if (sd_attr && sd_attr->dev_attr.attr.name) {
-		char *pos = strchr(sd_attr->dev_attr.attr.name, '_');
-		int i;
-
-		for (i = 0; i < MAX_ATTR_TYPES; i++) {
-			if (strcmp(pos+1, attribute_type_table[i]) == 0) {
-				tdata = powernv_sensor_get_sensor_data(pdata,
-						sd_attr->index, i);
-				break;
-			}
-		}
-	}
-
-	if (tdata) {
-		ret = opal_get_sensor_data(tdata->sensor_id, &x);
-		if (ret)
-			x = -1;
-	}
-
-	if (sensor_type == TEMPERATURE && x > 0) {
-		/* Temperature comes in Degrees and convert it to
-		 * milli-degrees.
-		 */
-		x = x*1000;
-	} else if (sensor_type == POWER && x > 0) {
-		/* Power value comes in watts, convert to micro-watts */
-		x = x * 1000000;
-	}
-
-	return sprintf(buf, "%d\n", x);
-}
-
-static u32 get_sensor_index_from_name(const char *name)
-{
-	char *hash_position = strchr(name, '#');
-	u32 index = 0, copy_length;
-	char newbuf[8];
-
-	if (hash_position) {
-		copy_length = strchr(hash_position, '-') - hash_position - 1;
-		if (copy_length < sizeof(newbuf)) {
-			strncpy(newbuf, hash_position + 1, copy_length);
-			sscanf(newbuf, "%d", &index);
-		}
-	}
-
-	return index;
-}
-
-static inline void get_sensor_suffix_from_name(const char *name, char *suffix)
-{
-	char *dash_position = strrchr(name, '-');
-	if (dash_position)
-		strncpy(suffix, dash_position+1, MAX_ATTR_LENGTH);
-	else
-		strcpy(suffix,"");
-}
-
-static int get_sensor_attr_properties(const char *sensor_name,
-		enum sensors sensor_type, enum attributes *attr_type,
-		u32 *sensor_index)
-{
-	char suffix[MAX_ATTR_LENGTH];
-
-	*attr_type = MAX_ATTR_TYPES;
-	*sensor_index = get_sensor_index_from_name(sensor_name);
-	if (*sensor_index == 0)
-		return -EINVAL;
-
-	get_sensor_suffix_from_name(sensor_name, suffix);
-	if (strcmp(suffix, "") == 0)
-		return -EINVAL;
-
-	if (strcmp(suffix, DT_FAULT_ATTR_SUFFIX) == 0)
-		*attr_type = FAULT;
-	else if (strcmp(suffix, DT_DATA_ATTR_SUFFIX) == 0)
-		*attr_type = INPUT;
-	else if ((sensor_type == TEMPERATURE) &&
-			(strcmp(suffix, DT_THRESHOLD_ATTR_SUFFIX) == 0))
-		*attr_type = MAXIMUM;
-	else if ((sensor_type == FAN) &&
-			(strcmp(suffix, DT_THRESHOLD_ATTR_SUFFIX) == 0))
-		*attr_type = MINIMUM;
-	else
-		return -ENOENT;
-
-	if (((sensor_type == FAN) && ((*attr_type == INPUT) ||
-				    (*attr_type == MINIMUM)))
-	    || ((sensor_type == TEMPERATURE) && ((*attr_type == INPUT) ||
-						 (*attr_type == MAXIMUM)))
-	    || ((sensor_type == POWER) && ((*attr_type == INPUT))))
-		return 0;
-
-	return -ENOENT;
-}
-
-static int create_sensor_attr(struct sensor_specific_data *tdata,
-		struct device *dev, enum sensors sensor_type,
-		enum attributes attr_type)
-{
-	int err = 0;
-	char temp_file_prefix[50];
-	static const char *const file_name_format = "%s%d_%s";
-
-	tdata->attr_type = attr_type;
-
-	if (sensor_type == FAN)
-		strcpy(temp_file_prefix, "fan");
-	else if (sensor_type == TEMPERATURE)
-		strcpy(temp_file_prefix, "temp");
-	else if (sensor_type == POWERSUPPLY)
-		strcpy(temp_file_prefix, "powersupply");
-	else if (sensor_type == POWER)
-		strcpy(temp_file_prefix, "power");
-
-	snprintf(tdata->attr_name, sizeof(tdata->attr_name), file_name_format,
-		 temp_file_prefix, tdata->sensor_index,
-		 attribute_type_table[tdata->attr_type]);
-
-	sysfs_attr_init(&tdata->sd_attr.dev_attr.attr);
-	tdata->sd_attr.dev_attr.attr.name = tdata->attr_name;
-	tdata->sd_attr.dev_attr.attr.mode = S_IRUGO;
-	tdata->sd_attr.dev_attr.show = show_sensor;
-
-	tdata->sd_attr.index = tdata->sensor_index;
-	err = device_create_file(dev, &tdata->sd_attr.dev_attr);
-
-	return err;
-}
-
-static int create_name_attr(struct sensor_data *pdata,
-				struct device *dev)
-{
-	sysfs_attr_init(&pdata->name_attr.attr);
-	pdata->name_attr.attr.name = "name";
-	pdata->name_attr.attr.mode = S_IRUGO;
-	pdata->name_attr.show = show_name;
-	return device_create_file(dev, &pdata->name_attr);
-}
-
-static int create_platform_device(enum sensors sensor_type,
-					struct platform_device **pdev)
-{
-	struct pdev_entry *pdev_entry = NULL;
-	int err;
-
-	*pdev = platform_device_alloc(sensor_names[sensor_type].name,
-			sensor_type);
-	if (!*pdev) {
-		pr_err("Device allocation failed\n");
-		err = -ENOMEM;
-		goto exit;
-	}
-
-	pdev_entry = kzalloc(sizeof(struct pdev_entry), GFP_KERNEL);
-	if (!pdev_entry) {
-		pr_err("Device allocation failed\n");
-		err = -ENOMEM;
-		goto exit_device_put;
-	}
-
-	err = platform_device_add(*pdev);
-	if (err) {
-		pr_err("Device addition failed (%d)\n", err);
-		goto exit_device_free;
-	}
-
-	pdev_entry->pdev = *pdev;
-	pdev_entry->type = (*pdev)->id;
-
-	list_add_tail(&pdev_entry->list, &pdev_list);
-
-	return 0;
-exit_device_free:
-	kfree(pdev_entry);
-exit_device_put:
-	platform_device_put(*pdev);
-exit:
-	return err;
-}
-
-static int create_sensor_data(struct platform_device *pdev)
-{
-	struct sensor_data *pdata = NULL;
-	int err = 0;
-
-	pdata = kzalloc(sizeof(struct sensor_data), GFP_KERNEL);
-	if (!pdata) {
-		err = -ENOMEM;
-		goto exit;
-	}
-
-	err = create_name_attr(pdata, &pdev->dev);
-	if (err)
-		goto exit_free;
-
-	pdata->hwmon_dev = hwmon_device_register(&pdev->dev);
-	if (IS_ERR(pdata->hwmon_dev)) {
-		err = PTR_ERR(pdata->hwmon_dev);
-		dev_err(&pdev->dev, "Class registration failed (%d)\n",
-			err);
-		goto exit_name;
-	}
-
-	INIT_LIST_HEAD(&pdata->sensor_list);
-	platform_set_drvdata(pdev, pdata);
-
-	return 0;
-
-exit_name:
-	device_remove_file(&pdev->dev, &pdata->name_attr);
-exit_free:
-	kfree(pdata);
-exit:
-	return err;
-}
-
-static void delete_sensor_attr(struct sensor_data *pdata)
-{
-	struct sensor_entry *s, *l;
-
-	list_for_each_entry_safe(s, l, &pdata->sensor_list, list) {
-		struct sensor_specific_data *tdata = s->sensor_data;
-			kfree(tdata);
-			list_del(&s->list);
-			kfree(s);
-		}
-}
-
-static int powernv_sensor_init(u32 sensor_id, const struct device_node *np,
-		enum sensors sensor_type, enum attributes attr_type,
-		u32 sensor_index)
-{
-	struct platform_device *pdev = powernv_sensor_get_pdev(sensor_type);
-	struct sensor_specific_data *tdata;
-	struct sensor_entry *sensor_entry;
-	struct sensor_data *pdata;
-	int err = 0;
-
-	if (!pdev) {
-		err = create_platform_device(sensor_type, &pdev);
-		if (err)
-			goto exit;
-
-		err = create_sensor_data(pdev);
-		if (err)
-			goto exit;
-	}
-
-	pdata = platform_get_drvdata(pdev);
-	if (!pdata) {
-		err = -ENOMEM;
-		goto exit;
-	}
-
-	tdata = kzalloc(sizeof(struct sensor_specific_data), GFP_KERNEL);
-	if (!tdata) {
-		err = -ENOMEM;
-		goto exit;
-	}
-
-	tdata->sensor_id = sensor_id;
-	tdata->sensor_index = sensor_index;
-
-	err = create_sensor_attr(tdata, &pdev->dev, sensor_type, attr_type);
-	if (err)
-		goto exit_free;
-
-	sensor_entry = kzalloc(sizeof(struct sensor_entry), GFP_KERNEL);
-	if (!sensor_entry) {
-		err = -ENOMEM;
-		goto exit_attr;
-	}
-
-	sensor_entry->sensor_data = tdata;
-
-	list_add_tail(&sensor_entry->list, &pdata->sensor_list);
-
-	return 0;
-exit_attr:
-	device_remove_file(&pdev->dev, &tdata->sd_attr.dev_attr);
-exit_free:
-	kfree(tdata);
-exit:
-	return err;
-}
-
-static void delete_unregister_sensors(void)
-{
-	struct pdev_entry *p, *n;
-
-	list_for_each_entry_safe(p, n, &pdev_list, list) {
-		struct sensor_data *pdata = platform_get_drvdata(p->pdev);
-			if (pdata) {
-				delete_sensor_attr(pdata);
-
-				hwmon_device_unregister(pdata->hwmon_dev);
-				kfree(pdata);
-			}
-		platform_device_unregister(p->pdev);
-		list_del(&p->list);
-		kfree(p);
-	}
-}
-
-static int __init powernv_hwmon_init(void)
-{
-	struct device_node *opal, *np = NULL;
-	enum attributes attr_type;
-	enum sensors type;
-	const u32 *sensor_id;
-	u32 sensor_index;
-	int err;
-
-	opal = of_find_node_by_path("/ibm,opal/sensors");
-	if (!opal) {
-		pr_err("%s: Opal 'sensors' node not found\n", __func__);
-		return -ENXIO;
-	}
-
-	for_each_child_of_node(opal, np) {
-		if (np->name == NULL)
-			continue;
-
-		for (type = 0; type < MAX_SENSOR_TYPE; type++)
-			if (of_device_is_compatible(np,
-					sensor_names[type].compaible))
-				break;
-
-		if (type == MAX_SENSOR_TYPE)
-			continue;
-
-		if (get_sensor_attr_properties(np->name, type, &attr_type,
-				&sensor_index))
-			continue;
-
-		sensor_id = of_get_property(np, "sensor-id", NULL);
-		if (!sensor_id) {
-			pr_info("%s: %s doesn't have sensor-id\n", __func__,
-					np->name);
-			continue;
-		}
-
-		err = powernv_sensor_init(*sensor_id, np, type, attr_type,
-				sensor_index);
-		if (err) {
-			of_node_put(opal);
-			goto exit;
-		}
-	}
-	of_node_put(opal);
-
-	return 0;
-exit:
-	delete_unregister_sensors();
-	return err;
-
-}
-
-static void powernv_hwmon_exit(void)
-{
-	delete_unregister_sensors();
-}
-
-module_init(powernv_hwmon_init);
-module_exit(powernv_hwmon_exit);