* [PATCH] hwmon: (max6650) Convert to a new-style i2c driver
@ 2008-07-16 15:31 Jean Delvare
[not found] ` <20080716173112.3f419ffd-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: Jean Delvare @ 2008-07-16 15:31 UTC (permalink / raw)
To: Linux I2C, LM Sensors
The new-style max6650 driver implements the optional detect() callback
to cover the use cases of the legacy driver.
Signed-off-by: Jean Delvare <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org>
Cc: Hans J. Koch <hjk-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
---
drivers/hwmon/max6650.c | 102 +++++++++++++++++++++--------------------------
1 file changed, 47 insertions(+), 55 deletions(-)
--- linux-2.6.26-rc9.orig/drivers/hwmon/max6650.c 2008-07-12 09:20:29.000000000 +0200
+++ linux-2.6.26-rc9/drivers/hwmon/max6650.c 2008-07-12 10:27:13.000000000 +0200
@@ -104,22 +104,34 @@ I2C_CLIENT_INSMOD_1(max6650);
#define DIV_FROM_REG(reg) (1 << (reg & 7))
-static int max6650_attach_adapter(struct i2c_adapter *adapter);
-static int max6650_detect(struct i2c_adapter *adapter, int address, int kind);
+static int max6650_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int max6650_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info);
static int max6650_init_client(struct i2c_client *client);
-static int max6650_detach_client(struct i2c_client *client);
+static int max6650_remove(struct i2c_client *client);
static struct max6650_data *max6650_update_device(struct device *dev);
/*
* Driver data (common to all clients)
*/
+static const struct i2c_device_id max6650_id[] = {
+ { "max6650", max6650 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max6650_id);
+
static struct i2c_driver max6650_driver = {
+ .class = I2C_CLASS_HWMON,
.driver = {
.name = "max6650",
},
- .attach_adapter = max6650_attach_adapter,
- .detach_client = max6650_detach_client,
+ .probe = max6650_probe,
+ .remove = max6650_remove,
+ .id_table = max6650_id,
+ .detect = max6650_detect,
+ .address_data = &addr_data,
};
/*
@@ -128,7 +140,6 @@ static struct i2c_driver max6650_driver
struct max6650_data
{
- struct i2c_client client;
struct device *hwmon_dev;
struct mutex update_lock;
char valid; /* zero until following fields are valid */
@@ -437,47 +448,21 @@ static struct attribute_group max6650_at
* Real code
*/
-static int max6650_attach_adapter(struct i2c_adapter *adapter)
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int max6650_detect(struct i2c_client *client, int kind,
+ struct i2c_board_info *info)
{
- if (!(adapter->class & I2C_CLASS_HWMON)) {
- dev_dbg(&adapter->dev,
- "FATAL: max6650_attach_adapter class HWMON not set\n");
- return 0;
- }
-
- return i2c_probe(adapter, &addr_data, max6650_detect);
-}
-
-/*
- * The following function does more than just detection. If detection
- * succeeds, it also registers the new chip.
- */
-
-static int max6650_detect(struct i2c_adapter *adapter, int address, int kind)
-{
- struct i2c_client *client;
- struct max6650_data *data;
- int err = -ENODEV;
+ struct i2c_adapter *adapter = client->adapter;
+ int address = client->addr;
dev_dbg(&adapter->dev, "max6650_detect called, kind = %d\n", kind);
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
dev_dbg(&adapter->dev, "max6650: I2C bus doesn't support "
"byte read mode, skipping.\n");
- return 0;
- }
-
- if (!(data = kzalloc(sizeof(struct max6650_data), GFP_KERNEL))) {
- dev_err(&adapter->dev, "max6650: out of memory.\n");
- return -ENOMEM;
+ return -ENODEV;
}
- client = &data->client;
- i2c_set_clientdata(client, data);
- client->addr = address;
- client->adapter = adapter;
- client->driver = &max6650_driver;
-
/*
* Now we do the remaining detection. A negative kind means that
* the driver was loaded with no force parameter (default), so we
@@ -501,28 +486,40 @@ static int max6650_detect(struct i2c_ada
||(i2c_smbus_read_byte_data(client, MAX6650_REG_COUNT) & 0xFC))) {
dev_dbg(&adapter->dev,
"max6650: detection failed at 0x%02x.\n", address);
- goto err_free;
+ return -ENODEV;
}
dev_info(&adapter->dev, "max6650: chip found at 0x%02x.\n", address);
- strlcpy(client->name, "max6650", I2C_NAME_SIZE);
- mutex_init(&data->update_lock);
+ strlcpy(info->type, "max6650", I2C_NAME_SIZE);
- if ((err = i2c_attach_client(client))) {
- dev_err(&adapter->dev, "max6650: failed to attach client.\n");
- goto err_free;
+ return 0;
+}
+
+static int max6650_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct max6650_data *data;
+ int err;
+
+ if (!(data = kzalloc(sizeof(struct max6650_data), GFP_KERNEL))) {
+ dev_err(&client->dev, "out of memory.\n");
+ return -ENOMEM;
}
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->update_lock);
+
/*
* Initialize the max6650 chip
*/
- if (max6650_init_client(client))
- goto err_detach;
+ err = max6650_init_client(client);
+ if (err)
+ goto err_free;
err = sysfs_create_group(&client->dev.kobj, &max6650_attr_grp);
if (err)
- goto err_detach;
+ goto err_free;
data->hwmon_dev = hwmon_device_register(&client->dev);
if (!IS_ERR(data->hwmon_dev))
@@ -531,24 +528,19 @@ static int max6650_detect(struct i2c_ada
err = PTR_ERR(data->hwmon_dev);
dev_err(&client->dev, "error registering hwmon device.\n");
sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
-err_detach:
- i2c_detach_client(client);
err_free:
kfree(data);
return err;
}
-static int max6650_detach_client(struct i2c_client *client)
+static int max6650_remove(struct i2c_client *client)
{
struct max6650_data *data = i2c_get_clientdata(client);
- int err;
sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
hwmon_device_unregister(data->hwmon_dev);
- err = i2c_detach_client(client);
- if (!err)
- kfree(data);
- return err;
+ kfree(data);
+ return 0;
}
static int max6650_init_client(struct i2c_client *client)
--
Jean Delvare
_______________________________________________
i2c mailing list
i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org
http://lists.lm-sensors.org/mailman/listinfo/i2c
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [lm-sensors] [PATCH] hwmon: (max6650) Convert to a new-style i2c driver
[not found] ` <20080716173112.3f419ffd-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
@ 2008-07-16 20:52 ` Hans de Goede
[not found] ` <487E5F9A.2070905-fbo2DhPpy/Q@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: Hans de Goede @ 2008-07-16 20:52 UTC (permalink / raw)
To: Jean Delvare; +Cc: Linux I2C, LM Sensors
Jean Delvare wrote:
> The new-style max6650 driver implements the optional detect() callback
> to cover the use cases of the legacy driver.
>
> Signed-off-by: Jean Delvare <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org>
> Cc: Hans J. Koch <hjk-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
Looks good,
Acked-by: Hans de Goede <j.w.r.degoede-fbo2DhPpy/Q@public.gmane.org>
Regards,
Hans
> ---
> drivers/hwmon/max6650.c | 102 +++++++++++++++++++++--------------------------
> 1 file changed, 47 insertions(+), 55 deletions(-)
>
> --- linux-2.6.26-rc9.orig/drivers/hwmon/max6650.c 2008-07-12 09:20:29.000000000 +0200
> +++ linux-2.6.26-rc9/drivers/hwmon/max6650.c 2008-07-12 10:27:13.000000000 +0200
> @@ -104,22 +104,34 @@ I2C_CLIENT_INSMOD_1(max6650);
>
> #define DIV_FROM_REG(reg) (1 << (reg & 7))
>
> -static int max6650_attach_adapter(struct i2c_adapter *adapter);
> -static int max6650_detect(struct i2c_adapter *adapter, int address, int kind);
> +static int max6650_probe(struct i2c_client *client,
> + const struct i2c_device_id *id);
> +static int max6650_detect(struct i2c_client *client, int kind,
> + struct i2c_board_info *info);
> static int max6650_init_client(struct i2c_client *client);
> -static int max6650_detach_client(struct i2c_client *client);
> +static int max6650_remove(struct i2c_client *client);
> static struct max6650_data *max6650_update_device(struct device *dev);
>
> /*
> * Driver data (common to all clients)
> */
>
> +static const struct i2c_device_id max6650_id[] = {
> + { "max6650", max6650 },
> + { }
> +};
> +MODULE_DEVICE_TABLE(i2c, max6650_id);
> +
> static struct i2c_driver max6650_driver = {
> + .class = I2C_CLASS_HWMON,
> .driver = {
> .name = "max6650",
> },
> - .attach_adapter = max6650_attach_adapter,
> - .detach_client = max6650_detach_client,
> + .probe = max6650_probe,
> + .remove = max6650_remove,
> + .id_table = max6650_id,
> + .detect = max6650_detect,
> + .address_data = &addr_data,
> };
>
> /*
> @@ -128,7 +140,6 @@ static struct i2c_driver max6650_driver
>
> struct max6650_data
> {
> - struct i2c_client client;
> struct device *hwmon_dev;
> struct mutex update_lock;
> char valid; /* zero until following fields are valid */
> @@ -437,47 +448,21 @@ static struct attribute_group max6650_at
> * Real code
> */
>
> -static int max6650_attach_adapter(struct i2c_adapter *adapter)
> +/* Return 0 if detection is successful, -ENODEV otherwise */
> +static int max6650_detect(struct i2c_client *client, int kind,
> + struct i2c_board_info *info)
> {
> - if (!(adapter->class & I2C_CLASS_HWMON)) {
> - dev_dbg(&adapter->dev,
> - "FATAL: max6650_attach_adapter class HWMON not set\n");
> - return 0;
> - }
> -
> - return i2c_probe(adapter, &addr_data, max6650_detect);
> -}
> -
> -/*
> - * The following function does more than just detection. If detection
> - * succeeds, it also registers the new chip.
> - */
> -
> -static int max6650_detect(struct i2c_adapter *adapter, int address, int kind)
> -{
> - struct i2c_client *client;
> - struct max6650_data *data;
> - int err = -ENODEV;
> + struct i2c_adapter *adapter = client->adapter;
> + int address = client->addr;
>
> dev_dbg(&adapter->dev, "max6650_detect called, kind = %d\n", kind);
>
> if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
> dev_dbg(&adapter->dev, "max6650: I2C bus doesn't support "
> "byte read mode, skipping.\n");
> - return 0;
> - }
> -
> - if (!(data = kzalloc(sizeof(struct max6650_data), GFP_KERNEL))) {
> - dev_err(&adapter->dev, "max6650: out of memory.\n");
> - return -ENOMEM;
> + return -ENODEV;
> }
>
> - client = &data->client;
> - i2c_set_clientdata(client, data);
> - client->addr = address;
> - client->adapter = adapter;
> - client->driver = &max6650_driver;
> -
> /*
> * Now we do the remaining detection. A negative kind means that
> * the driver was loaded with no force parameter (default), so we
> @@ -501,28 +486,40 @@ static int max6650_detect(struct i2c_ada
> ||(i2c_smbus_read_byte_data(client, MAX6650_REG_COUNT) & 0xFC))) {
> dev_dbg(&adapter->dev,
> "max6650: detection failed at 0x%02x.\n", address);
> - goto err_free;
> + return -ENODEV;
> }
>
> dev_info(&adapter->dev, "max6650: chip found at 0x%02x.\n", address);
>
> - strlcpy(client->name, "max6650", I2C_NAME_SIZE);
> - mutex_init(&data->update_lock);
> + strlcpy(info->type, "max6650", I2C_NAME_SIZE);
>
> - if ((err = i2c_attach_client(client))) {
> - dev_err(&adapter->dev, "max6650: failed to attach client.\n");
> - goto err_free;
> + return 0;
> +}
> +
> +static int max6650_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + struct max6650_data *data;
> + int err;
> +
> + if (!(data = kzalloc(sizeof(struct max6650_data), GFP_KERNEL))) {
> + dev_err(&client->dev, "out of memory.\n");
> + return -ENOMEM;
> }
>
> + i2c_set_clientdata(client, data);
> + mutex_init(&data->update_lock);
> +
> /*
> * Initialize the max6650 chip
> */
> - if (max6650_init_client(client))
> - goto err_detach;
> + err = max6650_init_client(client);
> + if (err)
> + goto err_free;
>
> err = sysfs_create_group(&client->dev.kobj, &max6650_attr_grp);
> if (err)
> - goto err_detach;
> + goto err_free;
>
> data->hwmon_dev = hwmon_device_register(&client->dev);
> if (!IS_ERR(data->hwmon_dev))
> @@ -531,24 +528,19 @@ static int max6650_detect(struct i2c_ada
> err = PTR_ERR(data->hwmon_dev);
> dev_err(&client->dev, "error registering hwmon device.\n");
> sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
> -err_detach:
> - i2c_detach_client(client);
> err_free:
> kfree(data);
> return err;
> }
>
> -static int max6650_detach_client(struct i2c_client *client)
> +static int max6650_remove(struct i2c_client *client)
> {
> struct max6650_data *data = i2c_get_clientdata(client);
> - int err;
>
> sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
> hwmon_device_unregister(data->hwmon_dev);
> - err = i2c_detach_client(client);
> - if (!err)
> - kfree(data);
> - return err;
> + kfree(data);
> + return 0;
> }
>
> static int max6650_init_client(struct i2c_client *client)
>
>
_______________________________________________
i2c mailing list
i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org
http://lists.lm-sensors.org/mailman/listinfo/i2c
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [lm-sensors] [PATCH] hwmon: (max6650) Convert to a new-style i2c driver
[not found] ` <487E5F9A.2070905-fbo2DhPpy/Q@public.gmane.org>
@ 2008-07-23 11:31 ` Hans J. Koch
0 siblings, 0 replies; 3+ messages in thread
From: Hans J. Koch @ 2008-07-23 11:31 UTC (permalink / raw)
To: Hans de Goede; +Cc: Linux I2C, LM Sensors
On Wed, Jul 16, 2008 at 10:52:42PM +0200, Hans de Goede wrote:
> Jean Delvare wrote:
> > The new-style max6650 driver implements the optional detect() callback
> > to cover the use cases of the legacy driver.
> >
> > Signed-off-by: Jean Delvare <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org>
> > Cc: Hans J. Koch <hjk-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
>
> Looks good,
Yep.
>
> Acked-by: Hans de Goede <j.w.r.degoede-fbo2DhPpy/Q@public.gmane.org>
Acked-by: Hans J. Koch <hjk-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
>
> Regards,
>
> Hans
>
>
>
> > ---
> > drivers/hwmon/max6650.c | 102 +++++++++++++++++++++--------------------------
> > 1 file changed, 47 insertions(+), 55 deletions(-)
> >
> > --- linux-2.6.26-rc9.orig/drivers/hwmon/max6650.c 2008-07-12 09:20:29.000000000 +0200
> > +++ linux-2.6.26-rc9/drivers/hwmon/max6650.c 2008-07-12 10:27:13.000000000 +0200
> > @@ -104,22 +104,34 @@ I2C_CLIENT_INSMOD_1(max6650);
> >
> > #define DIV_FROM_REG(reg) (1 << (reg & 7))
> >
> > -static int max6650_attach_adapter(struct i2c_adapter *adapter);
> > -static int max6650_detect(struct i2c_adapter *adapter, int address, int kind);
> > +static int max6650_probe(struct i2c_client *client,
> > + const struct i2c_device_id *id);
> > +static int max6650_detect(struct i2c_client *client, int kind,
> > + struct i2c_board_info *info);
> > static int max6650_init_client(struct i2c_client *client);
> > -static int max6650_detach_client(struct i2c_client *client);
> > +static int max6650_remove(struct i2c_client *client);
> > static struct max6650_data *max6650_update_device(struct device *dev);
> >
> > /*
> > * Driver data (common to all clients)
> > */
> >
> > +static const struct i2c_device_id max6650_id[] = {
> > + { "max6650", max6650 },
> > + { }
> > +};
> > +MODULE_DEVICE_TABLE(i2c, max6650_id);
> > +
> > static struct i2c_driver max6650_driver = {
> > + .class = I2C_CLASS_HWMON,
> > .driver = {
> > .name = "max6650",
> > },
> > - .attach_adapter = max6650_attach_adapter,
> > - .detach_client = max6650_detach_client,
> > + .probe = max6650_probe,
> > + .remove = max6650_remove,
> > + .id_table = max6650_id,
> > + .detect = max6650_detect,
> > + .address_data = &addr_data,
> > };
> >
> > /*
> > @@ -128,7 +140,6 @@ static struct i2c_driver max6650_driver
> >
> > struct max6650_data
> > {
> > - struct i2c_client client;
> > struct device *hwmon_dev;
> > struct mutex update_lock;
> > char valid; /* zero until following fields are valid */
> > @@ -437,47 +448,21 @@ static struct attribute_group max6650_at
> > * Real code
> > */
> >
> > -static int max6650_attach_adapter(struct i2c_adapter *adapter)
> > +/* Return 0 if detection is successful, -ENODEV otherwise */
> > +static int max6650_detect(struct i2c_client *client, int kind,
> > + struct i2c_board_info *info)
> > {
> > - if (!(adapter->class & I2C_CLASS_HWMON)) {
> > - dev_dbg(&adapter->dev,
> > - "FATAL: max6650_attach_adapter class HWMON not set\n");
> > - return 0;
> > - }
> > -
> > - return i2c_probe(adapter, &addr_data, max6650_detect);
> > -}
> > -
> > -/*
> > - * The following function does more than just detection. If detection
> > - * succeeds, it also registers the new chip.
> > - */
> > -
> > -static int max6650_detect(struct i2c_adapter *adapter, int address, int kind)
> > -{
> > - struct i2c_client *client;
> > - struct max6650_data *data;
> > - int err = -ENODEV;
> > + struct i2c_adapter *adapter = client->adapter;
> > + int address = client->addr;
> >
> > dev_dbg(&adapter->dev, "max6650_detect called, kind = %d\n", kind);
> >
> > if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
> > dev_dbg(&adapter->dev, "max6650: I2C bus doesn't support "
> > "byte read mode, skipping.\n");
> > - return 0;
> > - }
> > -
> > - if (!(data = kzalloc(sizeof(struct max6650_data), GFP_KERNEL))) {
> > - dev_err(&adapter->dev, "max6650: out of memory.\n");
> > - return -ENOMEM;
> > + return -ENODEV;
> > }
> >
> > - client = &data->client;
> > - i2c_set_clientdata(client, data);
> > - client->addr = address;
> > - client->adapter = adapter;
> > - client->driver = &max6650_driver;
> > -
> > /*
> > * Now we do the remaining detection. A negative kind means that
> > * the driver was loaded with no force parameter (default), so we
> > @@ -501,28 +486,40 @@ static int max6650_detect(struct i2c_ada
> > ||(i2c_smbus_read_byte_data(client, MAX6650_REG_COUNT) & 0xFC))) {
> > dev_dbg(&adapter->dev,
> > "max6650: detection failed at 0x%02x.\n", address);
> > - goto err_free;
> > + return -ENODEV;
> > }
> >
> > dev_info(&adapter->dev, "max6650: chip found at 0x%02x.\n", address);
> >
> > - strlcpy(client->name, "max6650", I2C_NAME_SIZE);
> > - mutex_init(&data->update_lock);
> > + strlcpy(info->type, "max6650", I2C_NAME_SIZE);
> >
> > - if ((err = i2c_attach_client(client))) {
> > - dev_err(&adapter->dev, "max6650: failed to attach client.\n");
> > - goto err_free;
> > + return 0;
> > +}
> > +
> > +static int max6650_probe(struct i2c_client *client,
> > + const struct i2c_device_id *id)
> > +{
> > + struct max6650_data *data;
> > + int err;
> > +
> > + if (!(data = kzalloc(sizeof(struct max6650_data), GFP_KERNEL))) {
> > + dev_err(&client->dev, "out of memory.\n");
> > + return -ENOMEM;
> > }
> >
> > + i2c_set_clientdata(client, data);
> > + mutex_init(&data->update_lock);
> > +
> > /*
> > * Initialize the max6650 chip
> > */
> > - if (max6650_init_client(client))
> > - goto err_detach;
> > + err = max6650_init_client(client);
> > + if (err)
> > + goto err_free;
> >
> > err = sysfs_create_group(&client->dev.kobj, &max6650_attr_grp);
> > if (err)
> > - goto err_detach;
> > + goto err_free;
> >
> > data->hwmon_dev = hwmon_device_register(&client->dev);
> > if (!IS_ERR(data->hwmon_dev))
> > @@ -531,24 +528,19 @@ static int max6650_detect(struct i2c_ada
> > err = PTR_ERR(data->hwmon_dev);
> > dev_err(&client->dev, "error registering hwmon device.\n");
> > sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
> > -err_detach:
> > - i2c_detach_client(client);
> > err_free:
> > kfree(data);
> > return err;
> > }
> >
> > -static int max6650_detach_client(struct i2c_client *client)
> > +static int max6650_remove(struct i2c_client *client)
> > {
> > struct max6650_data *data = i2c_get_clientdata(client);
> > - int err;
> >
> > sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
> > hwmon_device_unregister(data->hwmon_dev);
> > - err = i2c_detach_client(client);
> > - if (!err)
> > - kfree(data);
> > - return err;
> > + kfree(data);
> > + return 0;
> > }
> >
> > static int max6650_init_client(struct i2c_client *client)
> >
> >
>
>
> _______________________________________________
> i2c mailing list
> i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org
> http://lists.lm-sensors.org/mailman/listinfo/i2c
_______________________________________________
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^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2008-07-23 11:31 UTC | newest]
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2008-07-16 15:31 [PATCH] hwmon: (max6650) Convert to a new-style i2c driver Jean Delvare
[not found] ` <20080716173112.3f419ffd-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-07-16 20:52 ` [lm-sensors] " Hans de Goede
[not found] ` <487E5F9A.2070905-fbo2DhPpy/Q@public.gmane.org>
2008-07-23 11:31 ` Hans J. Koch
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