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Merge 3.5-rc7 into driver-core-next

Browse Source 
This pulls in the printk fixes to the driver-core-next branch.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2012-07-16 18:19:55 -07:00
commit 28a78e46f0
41 changed files with 1213 additions and 173 deletions
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15
Documentation/ABI/stable/sysfs-driver-w1_ds28e04 Normal file
View File

@ -0,0 +1,15 @@
What: /sys/bus/w1/devices/.../pio
Date: May 2012
Contact: Markus Franke <franm@hrz.tu-chemnitz.de>
Description: read/write the contents of the two PIO's of the DS28E04-100
see Documentation/w1/slaves/w1_ds28e04 for detailed information
Users: any user space application which wants to communicate with DS28E04-100
What: /sys/bus/w1/devices/.../eeprom
Date: May 2012
Contact: Markus Franke <franm@hrz.tu-chemnitz.de>
Description: read/write the contents of the EEPROM memory of the DS28E04-100
see Documentation/w1/slaves/w1_ds28e04 for detailed information
Users: any user space application which wants to communicate with DS28E04-100

19
Documentation/stable_kernel_rules.txt
View File

@ -1,4 +1,4 @@
Everything you ever wanted to know about Linux 2.6 -stable releases.
Everything you ever wanted to know about Linux -stable releases.
Rules on what kind of patches are accepted, and which ones are not, into the
"-stable" tree:
@ -42,10 +42,10 @@ Procedure for submitting patches to the -stable tree:
cherry-picked than this can be specified in the following format in
the sign-off area:
Cc: <stable@vger.kernel.org> # .32.x: a1f84a3: sched: Check for idle
Cc: <stable@vger.kernel.org> # .32.x: 1b9508f: sched: Rate-limit newidle
Cc: <stable@vger.kernel.org> # .32.x: fd21073: sched: Fix affinity logic
Cc: <stable@vger.kernel.org> # .32.x
Cc: <stable@vger.kernel.org> # 3.3.x: a1f84a3: sched: Check for idle
Cc: <stable@vger.kernel.org> # 3.3.x: 1b9508f: sched: Rate-limit newidle
Cc: <stable@vger.kernel.org> # 3.3.x: fd21073: sched: Fix affinity logic
Cc: <stable@vger.kernel.org> # 3.3.x
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The tag sequence has the meaning of:
@ -79,6 +79,15 @@ Review cycle:
security kernel team, and not go through the normal review cycle.
Contact the kernel security team for more details on this procedure.
Trees:
- The queues of patches, for both completed versions and in progress
versions can be found at:
http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git
- The finalized and tagged releases of all stable kernels can be found
in separate branches per version at:
http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git
Review committee:

36
Documentation/w1/slaves/w1_ds28e04 Normal file
View File

@ -0,0 +1,36 @@
Kernel driver w1_ds28e04
========================
Supported chips:
* Maxim DS28E04-100 4096-Bit Addressable 1-Wire EEPROM with PIO
supported family codes:
W1_FAMILY_DS28E04 0x1C
Author: Markus Franke, <franke.m@sebakmt.com> <franm@hrz.tu-chemnitz.de>
Description
-----------
Support is provided through the sysfs files "eeprom" and "pio". CRC checking
during memory accesses can optionally be enabled/disabled via the device
attribute "crccheck". The strong pull-up can optionally be enabled/disabled
via the module parameter "w1_strong_pullup".
Memory Access
A read operation on the "eeprom" file reads the given amount of bytes
from the EEPROM of the DS28E04.
A write operation on the "eeprom" file writes the given byte sequence
to the EEPROM of the DS28E04. If CRC checking mode is enabled only
fully alligned blocks of 32 bytes with valid CRC16 values (in bytes 30
and 31) are allowed to be written.
PIO Access
The 2 PIOs of the DS28E04-100 are accessible via the "pio" sysfs file.
The current status of the PIO's is returned as an 8 bit value. Bit 0/1
represent the state of PIO_0/PIO_1. Bits 2..7 do not care. The PIO's are
driven low-active, i.e. the driver delivers/expects low-active values.

8
MAINTAINERS
View File

@ -2709,6 +2709,14 @@ M: Mimi Zohar <zohar@us.ibm.com>
S: Supported
F: security/integrity/evm/
EXTERNAL CONNECTOR SUBSYSTEM (EXTCON)
M: MyungJoo Ham <myungjoo.ham@samsung.com>
M: Chanwoo Choi <cw00.choi@samsung.com>
L: linux-kernel@vger.kernel.org
S: Maintained
F: drivers/extcon/
F: Documentation/extcon/
EXYNOS DP DRIVER
M: Jingoo Han <jg1.han@samsung.com>
L: linux-fbdev@vger.kernel.org

1
drivers/base/bus.c
View File

@ -743,7 +743,6 @@ int bus_add_driver(struct device_driver *drv)
}
}
kobject_uevent(&priv->kobj, KOBJ_ADD);
return 0;
out_unregister:

71
drivers/base/core.c
View File

@ -85,14 +85,13 @@ const char *dev_driver_string(const struct device *dev)
}
EXPORT_SYMBOL(dev_driver_string);
#define to_dev(obj) container_of(obj, struct device, kobj)
#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)
static ssize_t dev_attr_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct device_attribute *dev_attr = to_dev_attr(attr);
struct device *dev = to_dev(kobj);
struct device *dev = kobj_to_dev(kobj);
ssize_t ret = -EIO;
if (dev_attr->show)
@ -108,7 +107,7 @@ static ssize_t dev_attr_store(struct kobject *kobj, struct attribute *attr,
const char *buf, size_t count)
{
struct device_attribute *dev_attr = to_dev_attr(attr);
struct device *dev = to_dev(kobj);
struct device *dev = kobj_to_dev(kobj);
ssize_t ret = -EIO;
if (dev_attr->store)
@ -182,7 +181,7 @@ EXPORT_SYMBOL_GPL(device_show_int);
*/
static void device_release(struct kobject *kobj)
{
struct device *dev = to_dev(kobj);
struct device *dev = kobj_to_dev(kobj);
struct device_private *p = dev->p;
if (dev->release)
@ -200,7 +199,7 @@ static void device_release(struct kobject *kobj)
static const void *device_namespace(struct kobject *kobj)
{
struct device *dev = to_dev(kobj);
struct device *dev = kobj_to_dev(kobj);
const void *ns = NULL;
if (dev->class && dev->class->ns_type)
@ -221,7 +220,7 @@ static int dev_uevent_filter(struct kset *kset, struct kobject *kobj)
struct kobj_type *ktype = get_ktype(kobj);
if (ktype == &device_ktype) {
struct device *dev = to_dev(kobj);
struct device *dev = kobj_to_dev(kobj);
if (dev->bus)
return 1;
if (dev->class)
@ -232,7 +231,7 @@ static int dev_uevent_filter(struct kset *kset, struct kobject *kobj)
static const char *dev_uevent_name(struct kset *kset, struct kobject *kobj)
{
struct device *dev = to_dev(kobj);
struct device *dev = kobj_to_dev(kobj);
if (dev->bus)
return dev->bus->name;
@ -244,7 +243,7 @@ static const char *dev_uevent_name(struct kset *kset, struct kobject *kobj)
static int dev_uevent(struct kset *kset, struct kobject *kobj,
struct kobj_uevent_env *env)
{
struct device *dev = to_dev(kobj);
struct device *dev = kobj_to_dev(kobj);
int retval = 0;
/* add device node properties if present */
@ -1132,7 +1131,7 @@ int device_register(struct device *dev)
*/
struct device *get_device(struct device *dev)
{
return dev ? to_dev(kobject_get(&dev->kobj)) : NULL;
return dev ? kobj_to_dev(kobject_get(&dev->kobj)) : NULL;
}
/**
@ -1754,25 +1753,25 @@ int device_move(struct device *dev, struct device *new_parent,
set_dev_node(dev, dev_to_node(new_parent));
}
if (!dev->class)
goto out_put;
error = device_move_class_links(dev, old_parent, new_parent);
if (error) {
/* We ignore errors on cleanup since we're hosed anyway... */
device_move_class_links(dev, new_parent, old_parent);
if (!kobject_move(&dev->kobj, &old_parent->kobj)) {
if (new_parent)
klist_remove(&dev->p->knode_parent);
dev->parent = old_parent;
if (old_parent) {
klist_add_tail(&dev->p->knode_parent,
&old_parent->p->klist_children);
set_dev_node(dev, dev_to_node(old_parent));
if (dev->class) {
error = device_move_class_links(dev, old_parent, new_parent);
if (error) {
/* We ignore errors on cleanup since we're hosed anyway... */
device_move_class_links(dev, new_parent, old_parent);
if (!kobject_move(&dev->kobj, &old_parent->kobj)) {
if (new_parent)
klist_remove(&dev->p->knode_parent);
dev->parent = old_parent;
if (old_parent) {
klist_add_tail(&dev->p->knode_parent,
&old_parent->p->klist_children);
set_dev_node(dev, dev_to_node(old_parent));
}
}
cleanup_glue_dir(dev, new_parent_kobj);
put_device(new_parent);
goto out;
}
cleanup_glue_dir(dev, new_parent_kobj);
put_device(new_parent);
goto out;
}
switch (dpm_order) {
case DPM_ORDER_NONE:
@ -1787,7 +1786,7 @@ int device_move(struct device *dev, struct device *new_parent,
device_pm_move_last(dev);
break;
}
out_put:
put_device(old_parent);
out:
device_pm_unlock();
@ -1812,6 +1811,13 @@ void device_shutdown(void)
while (!list_empty(&devices_kset->list)) {
dev = list_entry(devices_kset->list.prev, struct device,
kobj.entry);
/*
* hold reference count of device's parent to
* prevent it from being freed because parent's
* lock is to be held
*/
get_device(dev->parent);
get_device(dev);
/*
* Make sure the device is off the kset list, in the
@ -1820,6 +1826,11 @@ void device_shutdown(void)
list_del_init(&dev->kobj.entry);
spin_unlock(&devices_kset->list_lock);
/* hold lock to avoid race with probe/release */
if (dev->parent)
device_lock(dev->parent);
device_lock(dev);
/* Don't allow any more runtime suspends */
pm_runtime_get_noresume(dev);
pm_runtime_barrier(dev);
@ -1831,7 +1842,13 @@ void device_shutdown(void)
dev_dbg(dev, "shutdown\n");
dev->driver->shutdown(dev);
}
device_unlock(dev);
if (dev->parent)
device_unlock(dev->parent);
put_device(dev);
put_device(dev->parent);
spin_lock(&devices_kset->list_lock);
}

14
drivers/base/dd.c
View File

@ -85,8 +85,20 @@ static void deferred_probe_work_func(struct work_struct *work)
* manipulate the deferred list
*/
mutex_unlock(&deferred_probe_mutex);
/*
* Force the device to the end of the dpm_list since
* the PM code assumes that the order we add things to
* the list is a good order for suspend but deferred
* probe makes that very unsafe.
*/
device_pm_lock();
device_pm_move_last(dev);
device_pm_unlock();
dev_dbg(dev, "Retrying from deferred list\n");
bus_probe_device(dev);
mutex_lock(&deferred_probe_mutex);
put_device(dev);
@ -283,6 +295,7 @@ probe_failed:
devres_release_all(dev);
driver_sysfs_remove(dev);
dev->driver = NULL;
dev_set_drvdata(dev, NULL);
if (ret == -EPROBE_DEFER) {
/* Driver requested deferred probing */
@ -487,6 +500,7 @@ static void __device_release_driver(struct device *dev)
drv->remove(dev);
devres_release_all(dev);
dev->driver = NULL;
dev_set_drvdata(dev, NULL);
klist_remove(&dev->p->knode_driver);
if (dev->bus)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,

1
drivers/base/dma-buf.c
View File

@ -493,6 +493,7 @@ EXPORT_SYMBOL_GPL(dma_buf_vmap);
/**
* dma_buf_vunmap - Unmap a vmap obtained by dma_buf_vmap.
* @dmabuf: [in] buffer to vunmap
* @vaddr: [in] vmap to vunmap
*/
void dma_buf_vunmap(struct dma_buf *dmabuf, void *vaddr)
{

1
drivers/base/dma-coherent.c
View File

@ -186,6 +186,7 @@ EXPORT_SYMBOL(dma_release_from_coherent);
* @vma: vm_area for the userspace memory
* @vaddr: cpu address returned by dma_alloc_from_coherent
* @size: size of the memory buffer allocated by dma_alloc_from_coherent
* @ret: result from remap_pfn_range()
*
* This checks whether the memory was allocated from the per-device
* coherent memory pool and if so, maps that memory to the provided vma.

3
drivers/base/driver.c
View File

@ -187,6 +187,9 @@ int driver_register(struct device_driver *drv)
ret = driver_add_groups(drv, drv->groups);
if (ret)
bus_remove_driver(drv);
kobject_uevent(&drv->p->kobj, KOBJ_ADD);
return ret;
}
EXPORT_SYMBOL_GPL(driver_register);

6
drivers/base/firmware_class.c
View File

@ -22,8 +22,6 @@
#include <linux/slab.h>
#include <linux/sched.h>
#define to_dev(obj) container_of(obj, struct device, kobj)
MODULE_AUTHOR("Manuel Estrada Sainz");
MODULE_DESCRIPTION("Multi purpose firmware loading support");
MODULE_LICENSE("GPL");
@ -290,7 +288,7 @@ static ssize_t firmware_data_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buffer, loff_t offset, size_t count)
{
struct device *dev = to_dev(kobj);
struct device *dev = kobj_to_dev(kobj);
struct firmware_priv *fw_priv = to_firmware_priv(dev);
struct firmware *fw;
ssize_t ret_count;
@ -384,7 +382,7 @@ static ssize_t firmware_data_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buffer, loff_t offset, size_t count)
{
struct device *dev = to_dev(kobj);
struct device *dev = kobj_to_dev(kobj);
struct firmware_priv *fw_priv = to_firmware_priv(dev);
struct firmware *fw;
ssize_t retval;

8
drivers/extcon/Kconfig
View File

@ -29,4 +29,12 @@ config EXTCON_MAX8997
Maxim MAX8997 PMIC. The MAX8997 MUIC is a USB port accessory
detector and switch.
config EXTCON_ARIZONA
tristate "Wolfson Arizona EXTCON support"
depends on MFD_ARIZONA
help
Say Y here to enable support for external accessory detection
with Wolfson Arizona devices. These are audio CODECs with
advanced audio accessory detection support.
endif # MULTISTATE_SWITCH

1
drivers/extcon/Makefile
View File

@ -5,3 +5,4 @@
obj-$(CONFIG_EXTCON) += extcon_class.o
obj-$(CONFIG_EXTCON_GPIO) += extcon_gpio.o
obj-$(CONFIG_EXTCON_MAX8997) += extcon-max8997.o
obj-$(CONFIG_EXTCON_ARIZONA) += extcon-arizona.o

491
drivers/extcon/extcon-arizona.c Normal file
View File

@ -0,0 +1,491 @@
/*
* extcon-arizona.c - Extcon driver Wolfson Arizona devices
*
* Copyright (C) 2012 Wolfson Microelectronics plc
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/extcon.h>
#include <linux/mfd/arizona/core.h>
#include <linux/mfd/arizona/pdata.h>
#include <linux/mfd/arizona/registers.h>
struct arizona_extcon_info {
struct device *dev;
struct arizona *arizona;
struct mutex lock;
struct regulator *micvdd;
int micd_mode;
const struct arizona_micd_config *micd_modes;
int micd_num_modes;
bool micd_reva;
bool mic;
bool detecting;
int jack_flips;
struct extcon_dev edev;
};
static const struct arizona_micd_config micd_default_modes[] = {
{ ARIZONA_ACCDET_SRC, 1 << ARIZONA_MICD_BIAS_SRC_SHIFT, 0 },
{ 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 },
};
#define ARIZONA_CABLE_MECHANICAL "Mechanical"
#define ARIZONA_CABLE_HEADPHONE "Headphone"
#define ARIZONA_CABLE_HEADSET "Headset"
static const char *arizona_cable[] = {
ARIZONA_CABLE_MECHANICAL,
ARIZONA_CABLE_HEADSET,
ARIZONA_CABLE_HEADPHONE,
NULL,
};
static const u32 arizona_exclusions[] = {
0x6, /* Headphone and headset */
0,
};
static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
{
struct arizona *arizona = info->arizona;
gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
info->micd_modes[mode].gpio);
regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
ARIZONA_MICD_BIAS_SRC_MASK,
info->micd_modes[mode].bias);
regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1,
ARIZONA_ACCDET_SRC, info->micd_modes[mode].src);
info->micd_mode = mode;
dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode);
}
static void arizona_start_mic(struct arizona_extcon_info *info)
{
struct arizona *arizona = info->arizona;
bool change;
int ret;
info->detecting = true;
info->mic = false;
info->jack_flips = 0;
/* Microphone detection can't use idle mode */
pm_runtime_get(info->dev);
ret = regulator_enable(info->micvdd);
if (ret != 0) {
dev_err(arizona->dev, "Failed to enable MICVDD: %d\n",
ret);
}
if (info->micd_reva) {
regmap_write(arizona->regmap, 0x80, 0x3);
regmap_write(arizona->regmap, 0x294, 0);
regmap_write(arizona->regmap, 0x80, 0x0);
}
regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
ARIZONA_MICD_ENA, ARIZONA_MICD_ENA,
&change);
if (!change) {
regulator_disable(info->micvdd);
pm_runtime_put_autosuspend(info->dev);
}
}
static void arizona_stop_mic(struct arizona_extcon_info *info)
{
struct arizona *arizona = info->arizona;
bool change;
regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1,
ARIZONA_MICD_ENA, 0,
&change);
if (info->micd_reva) {
regmap_write(arizona->regmap, 0x80, 0x3);
regmap_write(arizona->regmap, 0x294, 2);
regmap_write(arizona->regmap, 0x80, 0x0);
}
if (change) {
regulator_disable(info->micvdd);
pm_runtime_put_autosuspend(info->dev);
}
}
static irqreturn_t arizona_micdet(int irq, void *data)
{
struct arizona_extcon_info *info = data;
struct arizona *arizona = info->arizona;
unsigned int val;
int ret;
mutex_lock(&info->lock);
ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
if (ret != 0) {
dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret);
return IRQ_NONE;
}
dev_dbg(arizona->dev, "MICDET: %x\n", val);
if (!(val & ARIZONA_MICD_VALID)) {
dev_warn(arizona->dev, "Microphone detection state invalid\n");
mutex_unlock(&info->lock);
return IRQ_NONE;
}
/* Due to jack detect this should never happen */
if (!(val & ARIZONA_MICD_STS)) {
dev_warn(arizona->dev, "Detected open circuit\n");
info->detecting = false;
goto handled;
}
/* If we got a high impedence we should have a headset, report it. */
if (info->detecting && (val & 0x400)) {
ret = extcon_set_cable_state(&info->edev,
ARIZONA_CABLE_HEADSET, true);
if (ret != 0)
dev_err(arizona->dev, "Headset report failed: %d\n",
ret);
info->mic = true;
info->detecting = false;
goto handled;
}
/* If we detected a lower impedence during initial startup
* then we probably have the wrong polarity, flip it. Don't
* do this for the lowest impedences to speed up detection of
* plain headphones. If both polarities report a low
* impedence then give up and report headphones.
*/
if (info->detecting && (val & 0x3f8)) {
info->jack_flips++;
if (info->jack_flips >= info->micd_num_modes) {
dev_dbg(arizona->dev, "Detected headphone\n");
info->detecting = false;
ret = extcon_set_cable_state(&info->edev,
ARIZONA_CABLE_HEADPHONE,
true);
if (ret != 0)
dev_err(arizona->dev,
"Headphone report failed: %d\n",
ret);
} else {
info->micd_mode++;
if (info->micd_mode == info->micd_num_modes)
info->micd_mode = 0;
arizona_extcon_set_mode(info, info->micd_mode);
info->jack_flips++;
}
goto handled;
}
/*
* If we're still detecting and we detect a short then we've
* got a headphone. Otherwise it's a button press, the
* button reporting is stubbed out for now.
*/
if (val & 0x3fc) {
if (info->mic) {
dev_dbg(arizona->dev, "Mic button detected\n");
} else if (info->detecting) {
dev_dbg(arizona->dev, "Headphone detected\n");
info->detecting = false;
arizona_stop_mic(info);
ret = extcon_set_cable_state(&info->edev,
ARIZONA_CABLE_HEADPHONE,
true);
if (ret != 0)
dev_err(arizona->dev,
"Headphone report failed: %d\n",
ret);
} else {
dev_warn(arizona->dev, "Button with no mic: %x\n",
val);
}
} else {
dev_dbg(arizona->dev, "Mic button released\n");
}
handled:
pm_runtime_mark_last_busy(info->dev);
mutex_unlock(&info->lock);
return IRQ_HANDLED;
}
static irqreturn_t arizona_jackdet(int irq, void *data)
{
struct arizona_extcon_info *info = data;
struct arizona *arizona = info->arizona;
unsigned int val;
int ret;
pm_runtime_get_sync(info->dev);
mutex_lock(&info->lock);
ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val);
if (ret != 0) {
dev_err(arizona->dev, "Failed to read jackdet status: %d\n",
ret);
mutex_unlock(&info->lock);
pm_runtime_put_autosuspend(info->dev);
return IRQ_NONE;
}
if (val & ARIZONA_JD1_STS) {
dev_dbg(arizona->dev, "Detected jack\n");
ret = extcon_set_cable_state(&info->edev,
ARIZONA_CABLE_MECHANICAL, true);
if (ret != 0)
dev_err(arizona->dev, "Mechanical report failed: %d\n",
ret);
arizona_start_mic(info);
} else {
dev_dbg(arizona->dev, "Detected jack removal\n");
arizona_stop_mic(info);
ret = extcon_update_state(&info->edev, 0xffffffff, 0);
if (ret != 0)
dev_err(arizona->dev, "Removal report failed: %d\n",
ret);
}
mutex_unlock(&info->lock);
pm_runtime_mark_last_busy(info->dev);
pm_runtime_put_autosuspend(info->dev);
return IRQ_HANDLED;
}
static int __devinit arizona_extcon_probe(struct platform_device *pdev)
{
struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
struct arizona_pdata *pdata;
struct arizona_extcon_info *info;
int ret, mode;
pdata = dev_get_platdata(arizona->dev);
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (!info) {
dev_err(&pdev->dev, "failed to allocate memory\n");
ret = -ENOMEM;
goto err;
}
info->micvdd = devm_regulator_get(arizona->dev, "MICVDD");
if (IS_ERR(info->micvdd)) {
ret = PTR_ERR(info->micvdd);
dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret);
goto err;
}
mutex_init(&info->lock);
info->arizona = arizona;
info->dev = &pdev->dev;
info->detecting = true;
platform_set_drvdata(pdev, info);
switch (arizona->type) {
case WM5102:
switch (arizona->rev) {
case 0:
info->micd_reva = true;
break;
default:
break;
}
break;
default:
break;
}
info->edev.name = "Headset Jack";
info->edev.supported_cable = arizona_cable;
info->edev.mutually_exclusive = arizona_exclusions;
ret = extcon_dev_register(&info->edev, arizona->dev);
if (ret < 0) {
dev_err(arizona->dev, "extcon_dev_regster() failed: %d\n",
ret);
goto err;
}
if (pdata->num_micd_configs) {
info->micd_modes = pdata->micd_configs;
info->micd_num_modes = pdata->num_micd_configs;
} else {
info->micd_modes = micd_default_modes;
info->micd_num_modes = ARRAY_SIZE(micd_default_modes);
}
if (arizona->pdata.micd_pol_gpio > 0) {
if (info->micd_modes[0].gpio)
mode = GPIOF_OUT_INIT_HIGH;
else
mode = GPIOF_OUT_INIT_LOW;
ret = devm_gpio_request_one(&pdev->dev,
arizona->pdata.micd_pol_gpio,
mode,
"MICD polarity");
if (ret != 0) {
dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
arizona->pdata.micd_pol_gpio, ret);
goto err_register;
}
}
arizona_extcon_set_mode(info, 0);
pm_runtime_enable(&pdev->dev);
pm_runtime_idle(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
ret = arizona_request_irq(arizona, ARIZONA_IRQ_JD_RISE,
"JACKDET rise", arizona_jackdet, info);
if (ret != 0) {
dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n",
ret);
goto err_register;
}
ret = arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 1);
if (ret != 0) {
dev_err(&pdev->dev, "Failed to set JD rise IRQ wake: %d\n",
ret);
goto err_rise;
}
ret = arizona_request_irq(arizona, ARIZONA_IRQ_JD_FALL,
"JACKDET fall", arizona_jackdet, info);
if (ret != 0) {
dev_err(&pdev->dev, "Failed to get JD fall IRQ: %d\n", ret);
goto err_rise_wake;
}
ret = arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 1);
if (ret != 0) {
dev_err(&pdev->dev, "Failed to set JD fall IRQ wake: %d\n",
ret);
goto err_fall;
}
ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET,
"MICDET", arizona_micdet, info);
if (ret != 0) {
dev_err(&pdev->dev, "Failed to get MICDET IRQ: %d\n", ret);
goto err_fall_wake;
}
regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
ARIZONA_MICD_BIAS_STARTTIME_MASK |
ARIZONA_MICD_RATE_MASK,
7 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT |
8 << ARIZONA_MICD_RATE_SHIFT);
arizona_clk32k_enable(arizona);
regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE,
ARIZONA_JD1_DB, ARIZONA_JD1_DB);
regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
ARIZONA_JD1_ENA, ARIZONA_JD1_ENA);
pm_runtime_put(&pdev->dev);
return 0;
err_fall_wake:
arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0);
err_fall:
arizona_free_irq(arizona, ARIZONA_IRQ_JD_FALL, info);
err_rise_wake:
arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0);
err_rise:
arizona_free_irq(arizona, ARIZONA_IRQ_JD_RISE, info);
err_register:
pm_runtime_disable(&pdev->dev);
extcon_dev_unregister(&info->edev);
err:
return ret;
}
static int __devexit arizona_extcon_remove(struct platform_device *pdev)
{
struct arizona_extcon_info *info = platform_get_drvdata(pdev);
struct arizona *arizona = info->arizona;
pm_runtime_disable(&pdev->dev);
arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0);
arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0);
arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);
arizona_free_irq(arizona, ARIZONA_IRQ_JD_RISE, info);
arizona_free_irq(arizona, ARIZONA_IRQ_JD_FALL, info);
regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE,
ARIZONA_JD1_ENA, 0);
arizona_clk32k_disable(arizona);
extcon_dev_unregister(&info->edev);
return 0;
}
static struct platform_driver arizona_extcon_driver = {
.driver = {
.name = "arizona-extcon",
.owner = THIS_MODULE,
},
.probe = arizona_extcon_probe,
.remove = __devexit_p(arizona_extcon_remove),
};
module_platform_driver(arizona_extcon_driver);
MODULE_DESCRIPTION("Arizona Extcon driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:extcon-arizona");

2
drivers/extcon/extcon_class.c
View File

@ -65,7 +65,7 @@ const char *extcon_cable_name[] = {
NULL,
};
struct class *extcon_class;
static struct class *extcon_class;
#if defined(CONFIG_ANDROID)
static struct class_compat *switch_class;
#endif /* CONFIG_ANDROID */

17
drivers/extcon/extcon_gpio.c
View File

@ -105,25 +105,25 @@ static int __devinit gpio_extcon_probe(struct platform_device *pdev)
ret = extcon_dev_register(&extcon_data->edev, &pdev->dev);
if (ret < 0)
goto err_extcon_dev_register;
return ret;
ret = gpio_request_one(extcon_data->gpio, GPIOF_DIR_IN, pdev->name);
if (ret < 0)
goto err_request_gpio;
goto err;
INIT_DELAYED_WORK(&extcon_data->work, gpio_extcon_work);
extcon_data->irq = gpio_to_irq(extcon_data->gpio);
if (extcon_data->irq < 0) {
ret = extcon_data->irq;
goto err_detect_irq_num_failed;
goto err;
}
ret = request_any_context_irq(extcon_data->irq, gpio_irq_handler,
pdata->irq_flags, pdev->name,
extcon_data);
if (ret < 0)
goto err_request_irq;
goto err;
platform_set_drvdata(pdev, extcon_data);
/* Perform initial detection */
@ -131,13 +131,8 @@ static int __devinit gpio_extcon_probe(struct platform_device *pdev)
return 0;
err_request_irq:
err_detect_irq_num_failed:
gpio_free(extcon_data->gpio);
err_request_gpio:
err:
extcon_dev_unregister(&extcon_data->edev);
err_extcon_dev_register:
devm_kfree(&pdev->dev, extcon_data);
return ret;
}
@ -148,9 +143,7 @@ static int __devexit gpio_extcon_remove(struct platform_device *pdev)
cancel_delayed_work_sync(&extcon_data->work);
free_irq(extcon_data->irq, extcon_data);
gpio_free(extcon_data->gpio);
extcon_dev_unregister(&extcon_data->edev);
devm_kfree(&pdev->dev, extcon_data);
return 0;
}

11
drivers/power/ds2780_battery.c
View File

@ -39,7 +39,6 @@ struct ds2780_device_info {
struct device *dev;
struct power_supply bat;
struct device *w1_dev;
struct task_struct *mutex_holder;
};
enum current_types {
@ -64,10 +63,7 @@ static inline struct power_supply *to_power_supply(struct device *dev)
static inline int ds2780_battery_io(struct ds2780_device_info *dev_info,
char *buf, int addr, size_t count, int io)
{
if (dev_info->mutex_holder == current)
return w1_ds2780_io_nolock(dev_info->w1_dev, buf, addr, count, io);
else
return w1_ds2780_io(dev_info->w1_dev, buf, addr, count, io);
return w1_ds2780_io(dev_info->w1_dev, buf, addr, count, io);
}
static inline int ds2780_read8(struct ds2780_device_info *dev_info, u8 *val,
@ -779,7 +775,6 @@ static int __devinit ds2780_battery_probe(struct platform_device *pdev)
dev_info->bat.properties = ds2780_battery_props;
dev_info->bat.num_properties = ARRAY_SIZE(ds2780_battery_props);
dev_info->bat.get_property = ds2780_battery_get_property;
dev_info->mutex_holder = current;
ret = power_supply_register(&pdev->dev, &dev_info->bat);
if (ret) {
@ -809,8 +804,6 @@ static int __devinit ds2780_battery_probe(struct platform_device *pdev)
goto fail_remove_bin_file;
}
dev_info->mutex_holder = NULL;
return 0;
fail_remove_bin_file:
@ -830,8 +823,6 @@ static int __devexit ds2780_battery_remove(struct platform_device *pdev)
{
struct ds2780_device_info *dev_info = platform_get_drvdata(pdev);
dev_info->mutex_holder = current;
/* remove attributes */
sysfs_remove_group(&dev_info->bat.dev->kobj, &ds2780_attr_group);

12
drivers/power/ds2781_battery.c
View File

@ -37,7 +37,6 @@ struct ds2781_device_info {
struct device *dev;
struct power_supply bat;
struct device *w1_dev;
struct task_struct *mutex_holder;
};
enum current_types {
@ -62,11 +61,7 @@ static inline struct power_supply *to_power_supply(struct device *dev)
static inline int ds2781_battery_io(struct ds2781_device_info *dev_info,
char *buf, int addr, size_t count, int io)
{
if (dev_info->mutex_holder == current)
return w1_ds2781_io_nolock(dev_info->w1_dev, buf, addr,
count, io);
else
return w1_ds2781_io(dev_info->w1_dev, buf, addr, count, io);
return w1_ds2781_io(dev_info->w1_dev, buf, addr, count, io);
}
int w1_ds2781_read(struct ds2781_device_info *dev_info, char *buf,
@ -775,7 +770,6 @@ static int __devinit ds2781_battery_probe(struct platform_device *pdev)
dev_info->bat.properties = ds2781_battery_props;
dev_info->bat.num_properties = ARRAY_SIZE(ds2781_battery_props);
dev_info->bat.get_property = ds2781_battery_get_property;
dev_info->mutex_holder = current;
ret = power_supply_register(&pdev->dev, &dev_info->bat);
if (ret) {
@ -805,8 +799,6 @@ static int __devinit ds2781_battery_probe(struct platform_device *pdev)
goto fail_remove_bin_file;
}
dev_info->mutex_holder = NULL;
return 0;
fail_remove_bin_file:
@ -826,8 +818,6 @@ static int __devexit ds2781_battery_remove(struct platform_device *pdev)
{
struct ds2781_device_info *dev_info = platform_get_drvdata(pdev);
dev_info->mutex_holder = current;
/* remove attributes */
sysfs_remove_group(&dev_info->bat.dev->kobj, &ds2781_attr_group);

4
drivers/w1/masters/ds1wm.c
View File

@ -334,7 +334,9 @@ static void ds1wm_search(void *data, struct w1_master *master_dev,
return;
}
mutex_lock(&master_dev->bus_mutex);
if (ds1wm_reset(ds1wm_data)) {
mutex_unlock(&master_dev->bus_mutex);
dev_dbg(&ds1wm_data->pdev->dev,
"pass: %d reset error (or no slaves)\n", pass);
break;
@ -387,6 +389,7 @@ static void ds1wm_search(void *data, struct w1_master *master_dev,
}
if (ds1wm_data->read_error) {
mutex_unlock(&master_dev->bus_mutex);
dev_err(&ds1wm_data->pdev->dev,
"pass: %d read error, retrying\n", pass);
break;
@ -400,6 +403,7 @@ static void ds1wm_search(void *data, struct w1_master *master_dev,
dev_dbg(&ds1wm_data->pdev->dev,
"pass: %d resetting bus\n", pass);
ds1wm_reset(ds1wm_data);
mutex_unlock(&master_dev->bus_mutex);
if ((r_prime & ((u64)1 << 63)) && (d & ((u64)1 << 63))) {
dev_err(&ds1wm_data->pdev->dev,
"pass: %d bus error, retrying\n", pass);

30
drivers/w1/masters/omap_hdq.c
View File

@ -180,6 +180,7 @@ static int hdq_write_byte(struct hdq_data *hdq_data, u8 val, u8 *status)
hdq_data->hdq_irqstatus, OMAP_HDQ_TIMEOUT);
if (ret == 0) {
dev_dbg(hdq_data->dev, "TX wait elapsed\n");
ret = -ETIMEDOUT;
goto out;
}
@ -187,7 +188,7 @@ static int hdq_write_byte(struct hdq_data *hdq_data, u8 val, u8 *status)
/* check irqstatus */
if (!(*status & OMAP_HDQ_INT_STATUS_TXCOMPLETE)) {
dev_dbg(hdq_data->dev, "timeout waiting for"
"TXCOMPLETE/RXCOMPLETE, %x", *status);
" TXCOMPLETE/RXCOMPLETE, %x", *status);
ret = -ETIMEDOUT;
goto out;
}
@ -198,7 +199,7 @@ static int hdq_write_byte(struct hdq_data *hdq_data, u8 val, u8 *status)
OMAP_HDQ_FLAG_CLEAR, &tmp_status);
if (ret) {
dev_dbg(hdq_data->dev, "timeout waiting GO bit"
"return to zero, %x", tmp_status);
" return to zero, %x", tmp_status);
}
out:
@ -341,7 +342,7 @@ static int omap_hdq_break(struct hdq_data *hdq_data)
&tmp_status);
if (ret)
dev_dbg(hdq_data->dev, "timeout waiting INIT&GO bits"
"return to zero, %x", tmp_status);
" return to zero, %x", tmp_status);
out:
mutex_unlock(&hdq_data->hdq_mutex);
@ -353,7 +354,6 @@ static int hdq_read_byte(struct hdq_data *hdq_data, u8 *val)
{
int ret = 0;
u8 status;
unsigned long timeout = jiffies + OMAP_HDQ_TIMEOUT;
ret = mutex_lock_interruptible(&hdq_data->hdq_mutex);
if (ret < 0) {
@ -371,22 +371,20 @@ static int hdq_read_byte(struct hdq_data *hdq_data, u8 *val)
OMAP_HDQ_CTRL_STATUS_DIR | OMAP_HDQ_CTRL_STATUS_GO,
OMAP_HDQ_CTRL_STATUS_DIR | OMAP_HDQ_CTRL_STATUS_GO);
/*
* The RX comes immediately after TX. It
* triggers another interrupt before we
* sleep. So we have to wait for RXCOMPLETE bit.
* The RX comes immediately after TX.
*/
while (!(hdq_data->hdq_irqstatus
& OMAP_HDQ_INT_STATUS_RXCOMPLETE)
&& time_before(jiffies, timeout)) {
schedule_timeout_uninterruptible(1);
}
wait_event_timeout(hdq_wait_queue,
(hdq_data->hdq_irqstatus
& OMAP_HDQ_INT_STATUS_RXCOMPLETE),
OMAP_HDQ_TIMEOUT);
hdq_reg_merge(hdq_data, OMAP_HDQ_CTRL_STATUS, 0,
OMAP_HDQ_CTRL_STATUS_DIR);
status = hdq_data->hdq_irqstatus;
/* check irqstatus */
if (!(status & OMAP_HDQ_INT_STATUS_RXCOMPLETE)) {
dev_dbg(hdq_data->dev, "timeout waiting for"
"RXCOMPLETE, %x", status);
" RXCOMPLETE, %x", status);
ret = -ETIMEDOUT;
goto out;
}
@ -396,7 +394,7 @@ static int hdq_read_byte(struct hdq_data *hdq_data, u8 *val)
out:
mutex_unlock(&hdq_data->hdq_mutex);
rtn:
return 0;
return ret;
}
@ -470,7 +468,7 @@ static int omap_hdq_put(struct hdq_data *hdq_data)
if (0 == hdq_data->hdq_usecount) {
dev_dbg(hdq_data->dev, "attempt to decrement use count"
"when it is zero");
" when it is zero");
ret = -EINVAL;
} else {
hdq_data->hdq_usecount--;
@ -540,7 +538,7 @@ static void omap_w1_write_byte(void *_hdq, u8 byte)
mutex_unlock(&hdq_data->hdq_mutex);
ret = hdq_write_byte(hdq_data, byte, &status);
if (ret == 0) {
if (ret < 0) {
dev_dbg(hdq_data->dev, "TX failure:Ctrl status %x\n", status);
return;
}

13
drivers/w1/slaves/Kconfig
View File

@ -94,6 +94,19 @@ config W1_SLAVE_DS2781
If you are unsure, say N.
config W1_SLAVE_DS28E04
tristate "4096-Bit Addressable 1-Wire EEPROM with PIO (DS28E04-100)"
depends on W1
select CRC16
help
If you enable this you will have the DS28E04-100
chip support.
Say Y here if you want to use a 1-wire
4kb EEPROM with PIO family device (DS28E04).
If you are unsure, say N.
config W1_SLAVE_BQ27000
tristate "BQ27000 slave support"
depends on W1

1
drivers/w1/slaves/Makefile
View File

@ -12,3 +12,4 @@ obj-$(CONFIG_W1_SLAVE_DS2760) += w1_ds2760.o
obj-$(CONFIG_W1_SLAVE_DS2780) += w1_ds2780.o
obj-$(CONFIG_W1_SLAVE_DS2781) += w1_ds2781.o
obj-$(CONFIG_W1_SLAVE_BQ27000) += w1_bq27000.o
obj-$(CONFIG_W1_SLAVE_DS28E04) += w1_ds28e04.o

4
drivers/w1/slaves/w1_bq27000.c
View File

@ -31,10 +31,10 @@ static int w1_bq27000_read(struct device *dev, unsigned int reg)
u8 val;
struct w1_slave *sl = container_of(dev->parent, struct w1_slave, dev);
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
w1_write_8(sl->master, HDQ_CMD_READ | reg);
val = w1_read_8(sl->master);
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return val;
}

24
drivers/w1/slaves/w1_ds2408.c
View File

@ -52,11 +52,11 @@ static int _read_reg(struct w1_slave *sl, u8 address, unsigned char* buf)
if (!buf)
return -EINVAL;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
dev_dbg(&sl->dev, "mutex locked");
if (w1_reset_select_slave(sl)) {
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return -EIO;
}
@ -66,7 +66,7 @@ static int _read_reg(struct w1_slave *sl, u8 address, unsigned char* buf)
w1_write_block(sl->master, wrbuf, 3);
*buf = w1_read_8(sl->master);
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
dev_dbg(&sl->dev, "mutex unlocked");
return 1;
}
@ -165,7 +165,7 @@ static ssize_t w1_f29_write_output(
return -EFAULT;
dev_dbg(&sl->dev, "locking mutex for write_output");
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
dev_dbg(&sl->dev, "mutex locked");
if (w1_reset_select_slave(sl))
@ -200,14 +200,14 @@ static ssize_t w1_f29_write_output(
/* read the result of the READ_PIO_REGS command */
if (w1_read_8(sl->master) == *buf) {
/* success! */
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
dev_dbg(&sl->dev,
"mutex unlocked, retries:%d", retries);
return 1;
}
}
error:
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
dev_dbg(&sl->dev, "mutex unlocked in error, retries:%d", retries);
return -EIO;
@ -228,7 +228,7 @@ static ssize_t w1_f29_write_activity(
if (count != 1 || off != 0)
return -EFAULT;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
if (w1_reset_select_slave(sl))
goto error;
@ -236,7 +236,7 @@ static ssize_t w1_f29_write_activity(
while (retries--) {
w1_write_8(sl->master, W1_F29_FUNC_RESET_ACTIVITY_LATCHES);
if (w1_read_8(sl->master) == W1_F29_SUCCESS_CONFIRM_BYTE) {
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return 1;
}
if (w1_reset_resume_command(sl->master))
@ -244,7 +244,7 @@ static ssize_t w1_f29_write_activity(
}
error:
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return -EIO;
}
@ -263,7 +263,7 @@ static ssize_t w1_f29_write_status_control(
if (count != 1 || off != 0)
return -EFAULT;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
if (w1_reset_select_slave(sl))
goto error;
@ -285,12 +285,12 @@ static ssize_t w1_f29_write_status_control(
w1_write_block(sl->master, w1_buf, 3);
if (w1_read_8(sl->master) == *buf) {
/* success! */
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return 1;
}
}
error:
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return -EIO;
}

4
drivers/w1/slaves/w1_ds2423.c
View File

@ -66,7 +66,7 @@ static ssize_t w1_counter_read(struct device *device,
wrbuf[0] = 0xA5;
wrbuf[1] = rom_addr & 0xFF;
wrbuf[2] = rom_addr >> 8;
mutex_lock(&dev->mutex);
mutex_lock(&dev->bus_mutex);
if (!w1_reset_select_slave(sl)) {
w1_write_block(dev, wrbuf, 3);
read_byte_count = 0;
@ -124,7 +124,7 @@ static ssize_t w1_counter_read(struct device *device,
} else {
c -= snprintf(out_buf + PAGE_SIZE - c, c, "Connection error");
}
mutex_unlock(&dev->mutex);
mutex_unlock(&dev->bus_mutex);
return PAGE_SIZE - c;
}

8
drivers/w1/slaves/w1_ds2431.c
View File

@ -107,7 +107,7 @@ static ssize_t w1_f2d_read_bin(struct file *filp, struct kobject *kobj,
if (count == 0)
return 0;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
/* read directly from the EEPROM in chunks of W1_F2D_READ_MAXLEN */
while (todo > 0) {
@ -126,7 +126,7 @@ static ssize_t w1_f2d_read_bin(struct file *filp, struct kobject *kobj,
off += W1_F2D_READ_MAXLEN;
}
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return count;
}
@ -214,7 +214,7 @@ static ssize_t w1_f2d_write_bin(struct file *filp, struct kobject *kobj,
if (count == 0)
return 0;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
/* Can only write data in blocks of the size of the scratchpad */
addr = off;
@ -259,7 +259,7 @@ static ssize_t w1_f2d_write_bin(struct file *filp, struct kobject *kobj,
}
out_up:
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return count;
}

8
drivers/w1/slaves/w1_ds2433.c
View File

@ -107,7 +107,7 @@ static ssize_t w1_f23_read_bin(struct file *filp, struct kobject *kobj,
if ((count = w1_f23_fix_count(off, count, W1_EEPROM_SIZE)) == 0)
return 0;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
#ifdef CONFIG_W1_SLAVE_DS2433_CRC
@ -138,7 +138,7 @@ static ssize_t w1_f23_read_bin(struct file *filp, struct kobject *kobj,
#endif /* CONFIG_W1_SLAVE_DS2433_CRC */
out_up:
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return count;
}
@ -233,7 +233,7 @@ static ssize_t w1_f23_write_bin(struct file *filp, struct kobject *kobj,
}
#endif /* CONFIG_W1_SLAVE_DS2433_CRC */
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
/* Can only write data to one page at a time */
idx = 0;
@ -251,7 +251,7 @@ static ssize_t w1_f23_write_bin(struct file *filp, struct kobject *kobj,
}
out_up:
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return count;
}

8
drivers/w1/slaves/w1_ds2760.c
View File

@ -31,7 +31,7 @@ static int w1_ds2760_io(struct device *dev, char *buf, int addr, size_t count,
if (!dev)
return 0;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
if (addr > DS2760_DATA_SIZE || addr < 0) {
count = 0;
@ -54,7 +54,7 @@ static int w1_ds2760_io(struct device *dev, char *buf, int addr, size_t count,
}
out:
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return count;
}
@ -76,14 +76,14 @@ static int w1_ds2760_eeprom_cmd(struct device *dev, int addr, int cmd)
if (!dev)
return -EINVAL;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
if (w1_reset_select_slave(sl) == 0) {
w1_write_8(sl->master, cmd);
w1_write_8(sl->master, addr);
}
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return 0;
}

22
drivers/w1/slaves/w1_ds2780.c
View File

@ -60,30 +60,16 @@ int w1_ds2780_io(struct device *dev, char *buf, int addr, size_t count,
if (!dev)
return -ENODEV;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
ret = w1_ds2780_do_io(dev, buf, addr, count, io);
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return ret;
}
EXPORT_SYMBOL(w1_ds2780_io);
int w1_ds2780_io_nolock(struct device *dev, char *buf, int addr, size_t count,
int io)
{
int ret;
if (!dev)
return -ENODEV;
ret = w1_ds2780_do_io(dev, buf, addr, count, io);
return ret;
}
EXPORT_SYMBOL(w1_ds2780_io_nolock);
int w1_ds2780_eeprom_cmd(struct device *dev, int addr, int cmd)
{
struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
@ -91,14 +77,14 @@ int w1_ds2780_eeprom_cmd(struct device *dev, int addr, int cmd)
if (!dev)
return -EINVAL;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
if (w1_reset_select_slave(sl) == 0) {
w1_write_8(sl->master, cmd);
w1_write_8(sl->master, addr);
}
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return 0;
}
EXPORT_SYMBOL(w1_ds2780_eeprom_cmd);

2
drivers/w1/slaves/w1_ds2780.h
View File

@ -124,8 +124,6 @@
extern int w1_ds2780_io(struct device *dev, char *buf, int addr, size_t count,
int io);
extern int w1_ds2780_io_nolock(struct device *dev, char *buf, int addr,
size_t count, int io);
extern int w1_ds2780_eeprom_cmd(struct device *dev, int addr, int cmd);
#endif /* !_W1_DS2780_H */

22
drivers/w1/slaves/w1_ds2781.c
View File

@ -58,30 +58,16 @@ int w1_ds2781_io(struct device *dev, char *buf, int addr, size_t count,
if (!dev)
return -ENODEV;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
ret = w1_ds2781_do_io(dev, buf, addr, count, io);
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return ret;
}
EXPORT_SYMBOL(w1_ds2781_io);
int w1_ds2781_io_nolock(struct device *dev, char *buf, int addr, size_t count,
int io)
{
int ret;
if (!dev)
return -ENODEV;
ret = w1_ds2781_do_io(dev, buf, addr, count, io);
return ret;
}
EXPORT_SYMBOL(w1_ds2781_io_nolock);
int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd)
{
struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
@ -89,14 +75,14 @@ int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd)
if (!dev)
return -EINVAL;
mutex_lock(&sl->master->mutex);
mutex_lock(&sl->master->bus_mutex);
if (w1_reset_select_slave(sl) == 0) {
w1_write_8(sl->master, cmd);
w1_write_8(sl->master, addr);
}
mutex_unlock(&sl->master->mutex);
mutex_unlock(&sl->master->bus_mutex);
return 0;
}
EXPORT_SYMBOL(w1_ds2781_eeprom_cmd);

2
drivers/w1/slaves/w1_ds2781.h
View File

@ -129,8 +129,6 @@
extern int w1_ds2781_io(struct device *dev, char *buf, int addr, size_t count,
int io);
extern int w1_ds2781_io_nolock(struct device *dev, char *buf, int addr,
size_t count, int io);
extern int w1_ds2781_eeprom_cmd(struct device *dev, int addr, int cmd);
#endif /* !_W1_DS2781_H */

469
drivers/w1/slaves/w1_ds28e04.c Normal file
View File

@ -0,0 +1,469 @@
/*
* w1_ds28e04.c - w1 family 1C (DS28E04) driver
*
* Copyright (c) 2012 Markus Franke <franke.m@sebakmt.com>
*
* This source code is licensed under the GNU General Public License,
* Version 2. See the file COPYING for more details.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/crc16.h>
#include <linux/uaccess.h>
#define CRC16_INIT 0
#define CRC16_VALID 0xb001
#include "../w1.h"
#include "../w1_int.h"
#include "../w1_family.h"
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Markus Franke <franke.m@sebakmt.com>, <franm@hrz.tu-chemnitz.de>");
MODULE_DESCRIPTION("w1 family 1C driver for DS28E04, 4kb EEPROM and PIO");
/* Allow the strong pullup to be disabled, but default to enabled.
* If it was disabled a parasite powered device might not get the required
* current to copy the data from the scratchpad to EEPROM. If it is enabled
* parasite powered devices have a better chance of getting the current
* required.
*/
static int w1_strong_pullup = 1;
module_param_named(strong_pullup, w1_strong_pullup, int, 0);
/* enable/disable CRC checking on DS28E04-100 memory accesses */
static char w1_enable_crccheck = 1;
#define W1_EEPROM_SIZE 512
#define W1_PAGE_COUNT 16
#define W1_PAGE_SIZE 32
#define W1_PAGE_BITS 5
#define W1_PAGE_MASK 0x1F
#define W1_F1C_READ_EEPROM 0xF0
#define W1_F1C_WRITE_SCRATCH 0x0F
#define W1_F1C_READ_SCRATCH 0xAA
#define W1_F1C_COPY_SCRATCH 0x55
#define W1_F1C_ACCESS_WRITE 0x5A
#define W1_1C_REG_LOGIC_STATE 0x220
struct w1_f1C_data {
u8 memory[W1_EEPROM_SIZE];
u32 validcrc;
};
/**
* Check the file size bounds and adjusts count as needed.
* This would not be needed if the file size didn't reset to 0 after a write.
*/
static inline size_t w1_f1C_fix_count(loff_t off, size_t count, size_t size)
{
if (off > size)
return 0;
if ((off + count) > size)
return size - off;
return count;
}
static int w1_f1C_refresh_block(struct w1_slave *sl, struct w1_f1C_data *data,
int block)
{
u8 wrbuf[3];
int off = block * W1_PAGE_SIZE;
if (data->validcrc & (1 << block))
return 0;
if (w1_reset_select_slave(sl)) {
data->validcrc = 0;
return -EIO;
}
wrbuf[0] = W1_F1C_READ_EEPROM;
wrbuf[1] = off & 0xff;
wrbuf[2] = off >> 8;
w1_write_block(sl->master, wrbuf, 3);
w1_read_block(sl->master, &data->memory[off], W1_PAGE_SIZE);
/* cache the block if the CRC is valid */
if (crc16(CRC16_INIT, &data->memory[off], W1_PAGE_SIZE) == CRC16_VALID)
data->validcrc |= (1 << block);
return 0;
}
static int w1_f1C_read(struct w1_slave *sl, int addr, int len, char *data)
{
u8 wrbuf[3];
/* read directly from the EEPROM */
if (w1_reset_select_slave(sl))
return -EIO;
wrbuf[0] = W1_F1C_READ_EEPROM;
wrbuf[1] = addr & 0xff;
wrbuf[2] = addr >> 8;
w1_write_block(sl->master, wrbuf, sizeof(wrbuf));
return w1_read_block(sl->master, data, len);
}
static ssize_t w1_f1C_read_bin(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct w1_slave *sl = kobj_to_w1_slave(kobj);
struct w1_f1C_data *data = sl->family_data;
int i, min_page, max_page;
count = w1_f1C_fix_count(off, count, W1_EEPROM_SIZE);
if (count == 0)
return 0;
mutex_lock(&sl->master->mutex);
if (w1_enable_crccheck) {
min_page = (off >> W1_PAGE_BITS);
max_page = (off + count - 1) >> W1_PAGE_BITS;
for (i = min_page; i <= max_page; i++) {
if (w1_f1C_refresh_block(sl, data, i)) {
count = -EIO;
goto out_up;
}
}
memcpy(buf, &data->memory[off], count);
} else {
count = w1_f1C_read(sl, off, count, buf);
}
out_up:
mutex_unlock(&sl->master->mutex);
return count;
}
/**
* Writes to the scratchpad and reads it back for verification.
* Then copies the scratchpad to EEPROM.
* The data must be on one page.
* The master must be locked.
*
* @param sl The slave structure
* @param addr Address for the write
* @param len length must be <= (W1_PAGE_SIZE - (addr & W1_PAGE_MASK))
* @param data The data to write
* @return 0=Success -1=failure
*/
static int w1_f1C_write(struct w1_slave *sl, int addr, int len, const u8 *data)
{
u8 wrbuf[4];
u8 rdbuf[W1_PAGE_SIZE + 3];
u8 es = (addr + len - 1) & 0x1f;
unsigned int tm = 10;
int i;
struct w1_f1C_data *f1C = sl->family_data;
/* Write the data to the scratchpad */
if (w1_reset_select_slave(sl))
return -1;
wrbuf[0] = W1_F1C_WRITE_SCRATCH;
wrbuf[1] = addr & 0xff;
wrbuf[2] = addr >> 8;
w1_write_block(sl->master, wrbuf, 3);
w1_write_block(sl->master, data, len);
/* Read the scratchpad and verify */
if (w1_reset_select_slave(sl))
return -1;
w1_write_8(sl->master, W1_F1C_READ_SCRATCH);
w1_read_block(sl->master, rdbuf, len + 3);
/* Compare what was read against the data written */
if ((rdbuf[0] != wrbuf[1]) || (rdbuf[1] != wrbuf[2]) ||
(rdbuf[2] != es) || (memcmp(data, &rdbuf[3], len) != 0))
return -1;
/* Copy the scratchpad to EEPROM */
if (w1_reset_select_slave(sl))
return -1;
wrbuf[0] = W1_F1C_COPY_SCRATCH;
wrbuf[3] = es;
for (i = 0; i < sizeof(wrbuf); ++i) {
/* issue 10ms strong pullup (or delay) on the last byte
for writing the data from the scratchpad to EEPROM */
if (w1_strong_pullup && i == sizeof(wrbuf)-1)
w1_next_pullup(sl->master, tm);
w1_write_8(sl->master, wrbuf[i]);
}
if (!w1_strong_pullup)
msleep(tm);
if (w1_enable_crccheck) {
/* invalidate cached data */
f1C->validcrc &= ~(1 << (addr >> W1_PAGE_BITS));
}
/* Reset the bus to wake up the EEPROM (this may not be needed) */
w1_reset_bus(sl->master);
return 0;
}
static ssize_t w1_f1C_write_bin(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct w1_slave *sl = kobj_to_w1_slave(kobj);
int addr, len, idx;
count = w1_f1C_fix_count(off, count, W1_EEPROM_SIZE);
if (count == 0)
return 0;
if (w1_enable_crccheck) {
/* can only write full blocks in cached mode */
if ((off & W1_PAGE_MASK) || (count & W1_PAGE_MASK)) {
dev_err(&sl->dev, "invalid offset/count off=%d cnt=%zd\n",
(int)off, count);
return -EINVAL;
}
/* make sure the block CRCs are valid */
for (idx = 0; idx < count; idx += W1_PAGE_SIZE) {
if (crc16(CRC16_INIT, &buf[idx], W1_PAGE_SIZE)
!= CRC16_VALID) {
dev_err(&sl->dev, "bad CRC at offset %d\n",
(int)off);
return -EINVAL;
}
}
}
mutex_lock(&sl->master->mutex);
/* Can only write data to one page at a time */
idx = 0;
while (idx < count) {
addr = off + idx;
len = W1_PAGE_SIZE - (addr & W1_PAGE_MASK);
if (len > (count - idx))
len = count - idx;
if (w1_f1C_write(sl, addr, len, &buf[idx]) < 0) {
count = -EIO;
goto out_up;
}
idx += len;
}
out_up:
mutex_unlock(&sl->master->mutex);
return count;
}
static ssize_t w1_f1C_read_pio(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct w1_slave *sl = kobj_to_w1_slave(kobj);
int ret;
/* check arguments */
if (off != 0 || count != 1 || buf == NULL)
return -EINVAL;
mutex_lock(&sl->master->mutex);
ret = w1_f1C_read(sl, W1_1C_REG_LOGIC_STATE, count, buf);
mutex_unlock(&sl->master->mutex);
return ret;
}
static ssize_t w1_f1C_write_pio(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct w1_slave *sl = kobj_to_w1_slave(kobj);
u8 wrbuf[3];
u8 ack;
/* check arguments */
if (off != 0 || count != 1 || buf == NULL)
return -EINVAL;
mutex_lock(&sl->master->mutex);
/* Write the PIO data */
if (w1_reset_select_slave(sl)) {
mutex_unlock(&sl->master->mutex);
return -1;
}
/* set bit 7..2 to value '1' */
*buf = *buf | 0xFC;
wrbuf[0] = W1_F1C_ACCESS_WRITE;
wrbuf[1] = *buf;
wrbuf[2] = ~(*buf);
w1_write_block(sl->master, wrbuf, 3);
w1_read_block(sl->master, &ack, sizeof(ack));
mutex_unlock(&sl->master->mutex);
/* check for acknowledgement */
if (ack != 0xAA)
return -EIO;
return count;
}
static ssize_t w1_f1C_show_crccheck(struct device *dev,
struct device_attribute *attr, char *buf)
{
if (put_user(w1_enable_crccheck + 0x30, buf))
return -EFAULT;
return sizeof(w1_enable_crccheck);
}
static ssize_t w1_f1C_store_crccheck(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
char val;
if (count != 1 || !buf)
return -EINVAL;
if (get_user(val, buf))
return -EFAULT;
/* convert to decimal */
val = val - 0x30;
if (val != 0 && val != 1)
return -EINVAL;
/* set the new value */
w1_enable_crccheck = val;
return sizeof(w1_enable_crccheck);
}
#define NB_SYSFS_BIN_FILES 2
static struct bin_attribute w1_f1C_bin_attr[NB_SYSFS_BIN_FILES] = {
{
.attr = {
.name = "eeprom",
.mode = S_IRUGO | S_IWUSR,
},
.size = W1_EEPROM_SIZE,
.read = w1_f1C_read_bin,
.write = w1_f1C_write_bin,
},
{
.attr = {
.name = "pio",
.mode = S_IRUGO | S_IWUSR,
},
.size = 1,
.read = w1_f1C_read_pio,
.write = w1_f1C_write_pio,
}
};
static DEVICE_ATTR(crccheck, S_IWUSR | S_IRUGO,
w1_f1C_show_crccheck, w1_f1C_store_crccheck);
static int w1_f1C_add_slave(struct w1_slave *sl)
{
int err = 0;
int i;
struct w1_f1C_data *data = NULL;
if (w1_enable_crccheck) {
data = kzalloc(sizeof(struct w1_f1C_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
sl->family_data = data;
}
/* create binary sysfs attributes */
for (i = 0; i < NB_SYSFS_BIN_FILES && !err; ++i)
err = sysfs_create_bin_file(
&sl->dev.kobj, &(w1_f1C_bin_attr[i]));
if (!err) {
/* create device attributes */
err = device_create_file(&sl->dev, &dev_attr_crccheck);
}
if (err) {
/* remove binary sysfs attributes */
for (i = 0; i < NB_SYSFS_BIN_FILES; ++i)
sysfs_remove_bin_file(
&sl->dev.kobj, &(w1_f1C_bin_attr[i]));
kfree(data);
}
return err;
}
static void w1_f1C_remove_slave(struct w1_slave *sl)
{
int i;
kfree(sl->family_data);
sl->family_data = NULL;
/* remove device attributes */
device_remove_file(&sl->dev, &dev_attr_crccheck);
/* remove binary sysfs attributes */
for (i = 0; i < NB_SYSFS_BIN_FILES; ++i)
sysfs_remove_bin_file(&sl->dev.kobj, &(w1_f1C_bin_attr[i]));
}
static struct w1_family_ops w1_f1C_fops = {
.add_slave = w1_f1C_add_slave,
.remove_slave = w1_f1C_remove_slave,
};
static struct w1_family w1_family_1C = {
.fid = W1_FAMILY_DS28E04,
.fops = &w1_f1C_fops,
};
static int __init w1_f1C_init(void)
{
return w1_register_family(&w1_family_1C);
}
static void __exit w1_f1C_fini(void)
{
w1_unregister_family(&w1_family_1C);
}
module_init(w1_f1C_init);
module_exit(w1_f1C_fini);

10
drivers/w1/slaves/w1_therm.c
View File

@ -179,7 +179,7 @@ static ssize_t w1_therm_read(struct device *device,
int i, max_trying = 10;
ssize_t c = PAGE_SIZE;
i = mutex_lock_interruptible(&dev->mutex);
i = mutex_lock_interruptible(&dev->bus_mutex);
if (i != 0)
return i;
@ -207,19 +207,19 @@ static ssize_t w1_therm_read(struct device *device,
w1_write_8(dev, W1_CONVERT_TEMP);
if (external_power) {
mutex_unlock(&dev->mutex);
mutex_unlock(&dev->bus_mutex);
sleep_rem = msleep_interruptible(tm);
if (sleep_rem != 0)
return -EINTR;
i = mutex_lock_interruptible(&dev->mutex);
i = mutex_lock_interruptible(&dev->bus_mutex);
if (i != 0)
return i;
} else if (!w1_strong_pullup) {
sleep_rem = msleep_interruptible(tm);
if (sleep_rem != 0) {
mutex_unlock(&dev->mutex);
mutex_unlock(&dev->bus_mutex);
return -EINTR;
}
}
@ -258,7 +258,7 @@ static ssize_t w1_therm_read(struct device *device,
c -= snprintf(buf + PAGE_SIZE - c, c, "t=%d\n",
w1_convert_temp(rom, sl->family->fid));
mutex_unlock(&dev->mutex);
mutex_unlock(&dev->bus_mutex);
return PAGE_SIZE - c;
}

23
drivers/w1/w1.c
View File

@ -557,7 +557,7 @@ static int w1_uevent(struct device *dev, struct kobj_uevent_env *env)
struct w1_master *md = NULL;
struct w1_slave *sl = NULL;
char *event_owner, *name;
int err;
int err = 0;
if (dev->driver == &w1_master_driver) {
md = container_of(dev, struct w1_master, dev);
@ -576,19 +576,17 @@ static int w1_uevent(struct device *dev, struct kobj_uevent_env *env)
event_owner, name, dev_name(dev));
if (dev->driver != &w1_slave_driver || !sl)
return 0;
goto end;
err = add_uevent_var(env, "W1_FID=%02X", sl->reg_num.family);
if (err)
return err;
goto end;
err = add_uevent_var(env, "W1_SLAVE_ID=%024LX",
(unsigned long long)sl->reg_num.id);
if (err)
return err;
return 0;
};
end:
return err;
}
#else
static int w1_uevent(struct device *dev, struct kobj_uevent_env *env)
{
@ -887,16 +885,21 @@ void w1_search(struct w1_master *dev, u8 search_type, w1_slave_found_callback cb
*
* Return 0 - device(s) present, 1 - no devices present.
*/
mutex_lock(&dev->bus_mutex);
if (w1_reset_bus(dev)) {
mutex_unlock(&dev->bus_mutex);
dev_dbg(&dev->dev, "No devices present on the wire.\n");
break;
}
/* Do fast search on single slave bus */
if (dev->max_slave_count == 1) {
int rv;
w1_write_8(dev, W1_READ_ROM);
rv = w1_read_block(dev, (u8 *)&rn, 8);
mutex_unlock(&dev->bus_mutex);
if (w1_read_block(dev, (u8 *)&rn, 8) == 8 && rn)
if (rv == 8 && rn)
cb(dev, rn);
break;
@ -929,10 +932,12 @@ void w1_search(struct w1_master *dev, u8 search_type, w1_slave_found_callback cb
rn |= (tmp64 << i);
if (kthread_should_stop()) {
mutex_unlock(&dev->bus_mutex);
dev_dbg(&dev->dev, "Abort w1_search\n");
return;
}
}
mutex_unlock(&dev->bus_mutex);
if ( (triplet_ret & 0x03) != 0x03 ) {
if ( (desc_bit == last_zero) || (last_zero < 0))

1
drivers/w1/w1.h
View File

@ -180,6 +180,7 @@ struct w1_master
struct task_struct *thread;
struct mutex mutex;
struct mutex bus_mutex;
struct device_driver *driver;
struct device dev;

1
drivers/w1/w1_family.h
View File

@ -30,6 +30,7 @@
#define W1_FAMILY_SMEM_01 0x01
#define W1_FAMILY_SMEM_81 0x81
#define W1_THERM_DS18S20 0x10
#define W1_FAMILY_DS28E04 0x1C
#define W1_COUNTER_DS2423 0x1D
#define W1_THERM_DS1822 0x22
#define W1_EEPROM_DS2433 0x23

3
drivers/w1/w1_int.c
View File

@ -76,6 +76,7 @@ static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
INIT_LIST_HEAD(&dev->slist);
mutex_init(&dev->mutex);
mutex_init(&dev->bus_mutex);
memcpy(&dev->dev, device, sizeof(struct device));
dev_set_name(&dev->dev, "w1_bus_master%u", dev->id);
@ -117,7 +118,7 @@ int w1_add_master_device(struct w1_bus_master *master)
return(-EINVAL);
}
/* While it would be electrically possible to make a device that
* generated a strong pullup in bit bang mode, only hardare that
* generated a strong pullup in bit bang mode, only hardware that
* controls 1-wire time frames are even expected to support a strong
* pullup. w1_io.c would need to support calling set_pullup before
* the last write_bit operation of a w1_write_8 which it currently

4
fs/debugfs/inode.c
View File

@ -498,7 +498,7 @@ void debugfs_remove(struct dentry *dentry)
struct dentry *parent;
int ret;
if (!dentry)
if (IS_ERR_OR_NULL(dentry))
return;
parent = dentry->d_parent;
@ -530,7 +530,7 @@ void debugfs_remove_recursive(struct dentry *dentry)
struct dentry *child;
struct dentry *parent;
if (!dentry)
if (IS_ERR_OR_NULL(dentry))
return;
parent = dentry->d_parent;

5
include/linux/device.h
View File

@ -689,6 +689,11 @@ struct device {
void (*release)(struct device *dev);
};
static inline struct device *kobj_to_dev(struct kobject *kobj)
{
return container_of(kobj, struct device, kobj);
}
/* Get the wakeup routines, which depend on struct device */
#include <linux/pm_wakeup.h>

1
include/linux/genhd.h
View File

@ -16,7 +16,6 @@
#ifdef CONFIG_BLOCK
#define kobj_to_dev(k) container_of((k), struct device, kobj)
#define dev_to_disk(device) container_of((device), struct gendisk, part0.__dev)
#define dev_to_part(device) container_of((device), struct hd_struct, __dev)
#define disk_to_dev(disk) (&(disk)->part0.__dev)