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Date: Mon, 02 Sep 2013 09:20:07 +0900
From: Chanwoo Choi <cw00.choi@...sung.com>
To: linux-kernel@...r.kernel.org
Cc: gregkh@...uxfoundation.org, myungjoo.ham@...sung.com,
kyungmin.park@...sung.com, Chanwoo Choi <cw00.choi@...sung.com>
Subject: [PATCH 2/3] extcon: Change field type of 'dev' in extcon_dev structure
The extcon device must always need 'struct device' so this patch change
field type of 'dev' instead of allocating memory for 'struct device' on
extcon_dev_register() function.
Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
Signed-off-by: Myungjoo Ham <cw00.choi@...sung.com>
---
drivers/extcon/extcon-adc-jack.c | 2 +-
drivers/extcon/extcon-class.c | 52 +++++++++++++++++++---------------------
include/linux/extcon.h | 4 ++--
3 files changed, 27 insertions(+), 31 deletions(-)
diff --git a/drivers/extcon/extcon-adc-jack.c b/drivers/extcon/extcon-adc-jack.c
index 5d16428..90346d6 100644
--- a/drivers/extcon/extcon-adc-jack.c
+++ b/drivers/extcon/extcon-adc-jack.c
@@ -64,7 +64,7 @@ static void adc_jack_handler(struct work_struct *work)
ret = iio_read_channel_raw(data->chan, &adc_val);
if (ret < 0) {
- dev_err(data->edev.dev, "read channel() error: %d\n", ret);
+ dev_err(&data->edev.dev, "read channel() error: %d\n", ret);
return;
}
diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
index ed456b3..8bc43e6 100644
--- a/drivers/extcon/extcon-class.c
+++ b/drivers/extcon/extcon-class.c
@@ -160,7 +160,7 @@ static ssize_t name_show(struct device *dev, struct device_attribute *attr,
return ret;
}
- return sprintf(buf, "%s\n", dev_name(edev->dev));
+ return sprintf(buf, "%s\n", dev_name(&edev->dev));
}
static ssize_t cable_name_show(struct device *dev,
@@ -224,10 +224,11 @@ int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state)
edev->state |= state & mask;
raw_notifier_call_chain(&edev->nh, old_state, edev);
+
/* This could be in interrupt handler */
prop_buf = (char *)get_zeroed_page(GFP_ATOMIC);
if (prop_buf) {
- length = name_show(edev->dev, NULL, prop_buf);
+ length = name_show(&edev->dev, NULL, prop_buf);
if (length > 0) {
if (prop_buf[length - 1] == '\n')
prop_buf[length - 1] = 0;
@@ -235,7 +236,7 @@ int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state)
"NAME=%s", prop_buf);
envp[env_offset++] = name_buf;
}
- length = state_show(edev->dev, NULL, prop_buf);
+ length = state_show(&edev->dev, NULL, prop_buf);
if (length > 0) {
if (prop_buf[length - 1] == '\n')
prop_buf[length - 1] = 0;
@@ -247,15 +248,15 @@ int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state)
/* Unlock early before uevent */
spin_unlock_irqrestore(&edev->lock, flags);
- kobject_uevent_env(&edev->dev->kobj, KOBJ_CHANGE, envp);
+ kobject_uevent_env(&edev->dev.kobj, KOBJ_CHANGE, envp);
free_page((unsigned long)prop_buf);
} else {
/* Unlock early before uevent */
spin_unlock_irqrestore(&edev->lock, flags);
- dev_err(edev->dev,
+ dev_err(&edev->dev,
"out of memory in extcon_set_state\n");
- kobject_uevent(&edev->dev->kobj, KOBJ_CHANGE);
+ kobject_uevent(&edev->dev.kobj, KOBJ_CHANGE);
}
} else {
/* No changes */
@@ -593,20 +594,17 @@ int extcon_dev_register(struct extcon_dev *edev, struct device *dev)
}
if (index > SUPPORTED_CABLE_MAX) {
- dev_err(edev->dev,
+ dev_err(&edev->dev,
"maximum number of supported cables exceeded\n");
return -EINVAL;
}
- edev->dev = kzalloc(sizeof(struct device), GFP_KERNEL);
- if (!edev->dev)
- return -ENOMEM;
- edev->dev->parent = dev;
- edev->dev->class = extcon_class;
- edev->dev->release = extcon_dev_release;
+ edev->dev.parent = dev;
+ edev->dev.class = extcon_class;
+ edev->dev.release = extcon_dev_release;
edev->name = edev->name ? edev->name : dev_name(dev);
- dev_set_name(edev->dev, "%s", edev->name);
+ dev_set_name(&edev->dev, "%s", edev->name);
if (edev->max_supported) {
char buf[10];
@@ -714,7 +712,7 @@ int extcon_dev_register(struct extcon_dev *edev, struct device *dev)
goto err_alloc_groups;
}
- edev->extcon_dev_type.name = dev_name(edev->dev);
+ edev->extcon_dev_type.name = dev_name(&edev->dev);
edev->extcon_dev_type.release = dummy_sysfs_dev_release;
for (index = 0; index < edev->max_supported; index++)
@@ -724,25 +722,24 @@ int extcon_dev_register(struct extcon_dev *edev, struct device *dev)
edev->extcon_dev_type.groups[index] =
&edev->attr_g_muex;
- edev->dev->type = &edev->extcon_dev_type;
+ edev->dev.type = &edev->extcon_dev_type;
}
- ret = device_register(edev->dev);
+ ret = device_register(&edev->dev);
if (ret) {
- put_device(edev->dev);
+ put_device(&edev->dev);
goto err_dev;
}
#if defined(CONFIG_ANDROID)
if (switch_class)
- ret = class_compat_create_link(switch_class, edev->dev,
- NULL);
+ ret = class_compat_create_link(switch_class, &edev->dev, NULL);
#endif /* CONFIG_ANDROID */
spin_lock_init(&edev->lock);
RAW_INIT_NOTIFIER_HEAD(&edev->nh);
- dev_set_drvdata(edev->dev, edev);
+ dev_set_drvdata(&edev->dev, edev);
edev->state = 0;
mutex_lock(&extcon_dev_list_lock);
@@ -768,7 +765,6 @@ err_alloc_cables:
if (edev->max_supported)
kfree(edev->cables);
err_sysfs_alloc:
- kfree(edev->dev);
return ret;
}
EXPORT_SYMBOL_GPL(extcon_dev_register);
@@ -788,9 +784,9 @@ void extcon_dev_unregister(struct extcon_dev *edev)
list_del(&edev->entry);
mutex_unlock(&extcon_dev_list_lock);
- if (IS_ERR_OR_NULL(get_device(edev->dev))) {
- dev_err(edev->dev, "Failed to unregister extcon_dev (%s)\n",
- dev_name(edev->dev));
+ if (IS_ERR_OR_NULL(get_device(&edev->dev))) {
+ dev_err(&edev->dev, "Failed to unregister extcon_dev (%s)\n",
+ dev_name(&edev->dev));
return;
}
@@ -812,10 +808,10 @@ void extcon_dev_unregister(struct extcon_dev *edev)
#if defined(CONFIG_ANDROID)
if (switch_class)
- class_compat_remove_link(switch_class, edev->dev, NULL);
+ class_compat_remove_link(switch_class, &edev->dev, NULL);
#endif
- device_unregister(edev->dev);
- put_device(edev->dev);
+ device_unregister(&edev->dev);
+ put_device(&edev->dev);
}
EXPORT_SYMBOL_GPL(extcon_dev_unregister);
diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index c2b652dd..0269baf 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -93,7 +93,7 @@ struct extcon_cable;
* name of the extcon device.
* @print_state: An optional callback to override the method to print the
* status of the extcon device.
- * @dev: Device of this extcon. Do not provide at register-time.
+ * @dev: Device of this extcon.
* @state: Attach/detach state of this extcon. Do not provide at
* register-time.
* @nh: Notifier for the state change events from this extcon
@@ -121,7 +121,7 @@ struct extcon_dev {
ssize_t (*print_state)(struct extcon_dev *edev, char *buf);
/* Internal data. Please do not set. */
- struct device *dev;
+ struct device dev;
struct raw_notifier_head nh;
struct list_head entry;
int max_supported;
--
1.8.0
--
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