Re: [PATCH 1/2] extcon: of: Remove unnecessary function call by using the name of device_node
Hi,
On Thursday 20 March 2014 12:26 PM, Chanwoo Choi wrote:
> Hi,
>
> On 03/20/2014 02:20 PM, Kishon Vijay Abraham I wrote:
>> Hi,
>>
>> On Thursday 20 March 2014 07:52 AM, Chanwoo Choi wrote:
>>> Hi,
>>>
>>> On 03/19/2014 09:08 PM, Kishon Vijay Abraham I wrote:
Hi,
On Tuesday 18 March 2014 05:34 PM, Chanwoo Choi wrote:
> This patch remove unnecessary function call in of_extcon_get_extcon_dev()
> by using the name of device_node structure.
>
> Signed-off-by: Chanwoo Choi
> ---
> drivers/extcon/of_extcon.c | 12 ++--
> 1 file changed, 2 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/extcon/of_extcon.c b/drivers/extcon/of_extcon.c
> index 72173ec..0a29f82 100644
> --- a/drivers/extcon/of_extcon.c
> +++ b/drivers/extcon/of_extcon.c
> @@ -32,7 +32,6 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct
> device *dev, int index)
> {
> struct device_node *node;
> struct extcon_dev *edev;
> - struct platform_device *extcon_parent_dev;
>
> if (!dev->of_node) {
> dev_dbg(dev, "device does not have a device node entry\n");
> @@ -46,16 +45,9 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct
> device *dev, int index)
> return ERR_PTR(-ENODEV);
> }
>
> - extcon_parent_dev = of_find_device_by_node(node);
> - if (!extcon_parent_dev) {
> - dev_dbg(dev, "unable to find device by node\n");
> - return ERR_PTR(-EPROBE_DEFER);
> - }
> -
> - edev = extcon_get_extcon_dev(dev_name(&extcon_parent_dev->dev));
> + edev = extcon_get_extcon_dev(node->name);
Since you no longer want to use device names I think you should add this
too to
warn users if they rely on using the device name.
>>>
>>> Previous of_extcon_get_extcon_dev() support only platform device using
>>> of_find_device_by_node.
>>>
>>> If extcon device is based on i2c/spi/pci and so on,
>>> of_extcon_get_extcon_dev() can't
>>> find device instance for device name. So, I change device name from the
>>> name of platform device
>>> to the name of dt node.
>>
>> That's fine. But we have to fix extcon_dev_register() too, to not use device
>> names right? We have to warn extcon users not to use device names right?
>
> I don't think so. extcon_get_edev_by_phandle() shows wrong node->name as
> following:
The wrong node->name was given by the extcon provider but the error is being
reported in the consumer.
> The consumer could detect the cause of problem which can't get extcon device
> after
> checking error log message.
>
> edev = extcon_get_extcon_dev(node->name);
> if (!edev) {
> dev_err(dev, "unable to get extcon device : %s\n", node->name);
> return ERR_PTR(-ENODEV);
> }
>
> I don't want to add more log message.
I'm not sure if that log message is helpful in anyway to identify the problem
was because of the wrong node->name.
>
>>>
>>>
diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
index bc4c789..025eb39 100644
--- a/drivers/extcon/extcon-class.c
+++ b/drivers/extcon/extcon-class.c
@@ -601,7 +601,6 @@ int extcon_dev_register(struct extcon_dev *edev)
edev->dev.class = extcon_class;
edev->dev.release = extcon_dev_release;
- edev->name = edev->name ? edev->name : dev_name(edev->dev.parent);
//The user should always pass the 'name' as we no longer use device name
while
getting extcon device. And this name should also be the 'node' name?
if (IS_ERR_OR_NULL(edev->name)) {
dev_err(&edev->dev,
"extcon device name is null\n");
Btw changing to node name from device name breaks dwc3 in OMAP5 and you
would
need this too..
diff --git a/drivers/extcon/extcon-palmas.c
b/drivers/extcon/extcon-palmas.c
index 2aea4bc..cea8cd3 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -188,6 +188,7 @@ static int palmas_usb_probe(struct platform_device
*pdev)
palmas_usb->edev.supported_cable = palmas_extcon_cable;
palmas_usb->edev.dev.parent = palmas_usb->dev;
+ palmas_usb->edev.name = "palmas_usb";
palmas_usb->edev.mutually_exclusive = mutually_exclusive;
status = extcon_dev_register(&palmas_usb->edev);
Cheers
Kishon
>>>
>>> If node name is same as extcon device name, don't need some modification.
>>> Also, you can modify node name in some OMAP dts file insead of modification
>>> of extcon-palmas.c
>>
>> node name in OMAP dts is already 'palmas_usb'. But since we were not setting
>> 'edev.name' in extcon-palmas.c, extcon_dev_register used device name of
>> palmas
>> (palmas_usb.7 in my case). So extcon-palmas.c needs the fix.
>
> For example,
> I
Re: [PATCH 1/2] extcon: of: Remove unnecessary function call by using the name of device_node
Hi,
On 03/20/2014 02:20 PM, Kishon Vijay Abraham I wrote:
> Hi,
>
> On Thursday 20 March 2014 07:52 AM, Chanwoo Choi wrote:
>> Hi,
>>
>> On 03/19/2014 09:08 PM, Kishon Vijay Abraham I wrote:
>>> Hi,
>>>
>>> On Tuesday 18 March 2014 05:34 PM, Chanwoo Choi wrote:
This patch remove unnecessary function call in of_extcon_get_extcon_dev()
by using the name of device_node structure.
Signed-off-by: Chanwoo Choi
---
drivers/extcon/of_extcon.c | 12 ++--
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/drivers/extcon/of_extcon.c b/drivers/extcon/of_extcon.c
index 72173ec..0a29f82 100644
--- a/drivers/extcon/of_extcon.c
+++ b/drivers/extcon/of_extcon.c
@@ -32,7 +32,6 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct
device *dev, int index)
{
struct device_node *node;
struct extcon_dev *edev;
- struct platform_device *extcon_parent_dev;
if (!dev->of_node) {
dev_dbg(dev, "device does not have a device node entry\n");
@@ -46,16 +45,9 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct
device *dev, int index)
return ERR_PTR(-ENODEV);
}
- extcon_parent_dev = of_find_device_by_node(node);
- if (!extcon_parent_dev) {
- dev_dbg(dev, "unable to find device by node\n");
- return ERR_PTR(-EPROBE_DEFER);
- }
-
- edev = extcon_get_extcon_dev(dev_name(&extcon_parent_dev->dev));
+ edev = extcon_get_extcon_dev(node->name);
>>>
>>> Since you no longer want to use device names I think you should add this
>>> too to
>>> warn users if they rely on using the device name.
>>
>> Previous of_extcon_get_extcon_dev() support only platform device using
>> of_find_device_by_node.
>>
>> If extcon device is based on i2c/spi/pci and so on,
>> of_extcon_get_extcon_dev() can't
>> find device instance for device name. So, I change device name from the name
>> of platform device
>> to the name of dt node.
>
> That's fine. But we have to fix extcon_dev_register() too, to not use device
> names right? We have to warn extcon users not to use device names right?
I don't think so. extcon_get_edev_by_phandle() shows wrong node->name as
following:
The consumer could detect the cause of problem which can't get extcon device
after
checking error log message.
edev = extcon_get_extcon_dev(node->name);
if (!edev) {
dev_err(dev, "unable to get extcon device : %s\n", node->name);
return ERR_PTR(-ENODEV);
}
I don't want to add more log message.
>>
>>
>>> diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
>>> index bc4c789..025eb39 100644
>>> --- a/drivers/extcon/extcon-class.c
>>> +++ b/drivers/extcon/extcon-class.c
>>> @@ -601,7 +601,6 @@ int extcon_dev_register(struct extcon_dev *edev)
>>> edev->dev.class = extcon_class;
>>> edev->dev.release = extcon_dev_release;
>>>
>>> - edev->name = edev->name ? edev->name : dev_name(edev->dev.parent);
>>> //The user should always pass the 'name' as we no longer use device name
>>> while
>>> getting extcon device. And this name should also be the 'node' name?
>>> if (IS_ERR_OR_NULL(edev->name)) {
>>> dev_err(&edev->dev,
>>> "extcon device name is null\n");
>>>
>>> Btw changing to node name from device name breaks dwc3 in OMAP5 and you
>>> would
>>> need this too..
>>>
>>> diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
>>> index 2aea4bc..cea8cd3 100644
>>> --- a/drivers/extcon/extcon-palmas.c
>>> +++ b/drivers/extcon/extcon-palmas.c
>>> @@ -188,6 +188,7 @@ static int palmas_usb_probe(struct platform_device
>>> *pdev)
>>>
>>> palmas_usb->edev.supported_cable = palmas_extcon_cable;
>>> palmas_usb->edev.dev.parent = palmas_usb->dev;
>>> + palmas_usb->edev.name = "palmas_usb";
>>> palmas_usb->edev.mutually_exclusive = mutually_exclusive;
>>>
>>> status = extcon_dev_register(&palmas_usb->edev);
>>>
>>> Cheers
>>> Kishon
>>>
>>
>> If node name is same as extcon device name, don't need some modification.
>> Also, you can modify node name in some OMAP dts file insead of modification
>> of extcon-palmas.c
>
> node name in OMAP dts is already 'palmas_usb'. But since we were not setting
> 'edev.name' in extcon-palmas.c, extcon_dev_register used device name of palmas
> (palmas_usb.7 in my case). So extcon-palmas.c needs the fix.
For example,
I used extcon provider/consumer driver in dts as following:
extcon-max14577.c set device name as edev->name and then dt node name of
max14577
set "max14577-muic" which is same as device name(dev_name(&pdev->dev)).
I don't need to modify extcon-max14577.c
In drivers/extcon/extcon-max14577.c
...
info->edev->name = dev_name(&pdev->dev);
...
In dts.
i2c@1388 {
Re: [PATCH 1/2] extcon: of: Remove unnecessary function call by using the name of device_node
Hi,
On Thursday 20 March 2014 07:52 AM, Chanwoo Choi wrote:
> Hi,
>
> On 03/19/2014 09:08 PM, Kishon Vijay Abraham I wrote:
>> Hi,
>>
>> On Tuesday 18 March 2014 05:34 PM, Chanwoo Choi wrote:
>>> This patch remove unnecessary function call in of_extcon_get_extcon_dev()
>>> by using the name of device_node structure.
>>>
>>> Signed-off-by: Chanwoo Choi
>>> ---
>>> drivers/extcon/of_extcon.c | 12 ++--
>>> 1 file changed, 2 insertions(+), 10 deletions(-)
>>>
>>> diff --git a/drivers/extcon/of_extcon.c b/drivers/extcon/of_extcon.c
>>> index 72173ec..0a29f82 100644
>>> --- a/drivers/extcon/of_extcon.c
>>> +++ b/drivers/extcon/of_extcon.c
>>> @@ -32,7 +32,6 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct device
>>> *dev, int index)
>>> {
>>> struct device_node *node;
>>> struct extcon_dev *edev;
>>> - struct platform_device *extcon_parent_dev;
>>>
>>> if (!dev->of_node) {
>>> dev_dbg(dev, "device does not have a device node entry\n");
>>> @@ -46,16 +45,9 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct
>>> device *dev, int index)
>>> return ERR_PTR(-ENODEV);
>>> }
>>>
>>> - extcon_parent_dev = of_find_device_by_node(node);
>>> - if (!extcon_parent_dev) {
>>> - dev_dbg(dev, "unable to find device by node\n");
>>> - return ERR_PTR(-EPROBE_DEFER);
>>> - }
>>> -
>>> - edev = extcon_get_extcon_dev(dev_name(&extcon_parent_dev->dev));
>>> + edev = extcon_get_extcon_dev(node->name);
>>
>> Since you no longer want to use device names I think you should add this too
>> to
>> warn users if they rely on using the device name.
>
> Previous of_extcon_get_extcon_dev() support only platform device using
> of_find_device_by_node.
>
> If extcon device is based on i2c/spi/pci and so on,
> of_extcon_get_extcon_dev() can't
> find device instance for device name. So, I change device name from the name
> of platform device
> to the name of dt node.
That's fine. But we have to fix extcon_dev_register() too, to not use device
names right? We have to warn extcon users not to use device names right?
>
>
>> diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
>> index bc4c789..025eb39 100644
>> --- a/drivers/extcon/extcon-class.c
>> +++ b/drivers/extcon/extcon-class.c
>> @@ -601,7 +601,6 @@ int extcon_dev_register(struct extcon_dev *edev)
>> edev->dev.class = extcon_class;
>> edev->dev.release = extcon_dev_release;
>>
>> - edev->name = edev->name ? edev->name : dev_name(edev->dev.parent);
>> //The user should always pass the 'name' as we no longer use device name
>> while
>> getting extcon device. And this name should also be the 'node' name?
>> if (IS_ERR_OR_NULL(edev->name)) {
>> dev_err(&edev->dev,
>> "extcon device name is null\n");
>>
>> Btw changing to node name from device name breaks dwc3 in OMAP5 and you would
>> need this too..
>>
>> diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
>> index 2aea4bc..cea8cd3 100644
>> --- a/drivers/extcon/extcon-palmas.c
>> +++ b/drivers/extcon/extcon-palmas.c
>> @@ -188,6 +188,7 @@ static int palmas_usb_probe(struct platform_device *pdev)
>>
>> palmas_usb->edev.supported_cable = palmas_extcon_cable;
>> palmas_usb->edev.dev.parent = palmas_usb->dev;
>> + palmas_usb->edev.name = "palmas_usb";
>> palmas_usb->edev.mutually_exclusive = mutually_exclusive;
>>
>> status = extcon_dev_register(&palmas_usb->edev);
>>
>> Cheers
>> Kishon
>>
>
> If node name is same as extcon device name, don't need some modification.
> Also, you can modify node name in some OMAP dts file insead of modification
> of extcon-palmas.c
node name in OMAP dts is already 'palmas_usb'. But since we were not setting
'edev.name' in extcon-palmas.c, extcon_dev_register used device name of palmas
(palmas_usb.7 in my case). So extcon-palmas.c needs the fix.
Cheers
Kishon
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Re: [PATCH 1/2] extcon: of: Remove unnecessary function call by using the name of device_node
Hi,
On 03/19/2014 09:08 PM, Kishon Vijay Abraham I wrote:
> Hi,
>
> On Tuesday 18 March 2014 05:34 PM, Chanwoo Choi wrote:
>> This patch remove unnecessary function call in of_extcon_get_extcon_dev()
>> by using the name of device_node structure.
>>
>> Signed-off-by: Chanwoo Choi
>> ---
>> drivers/extcon/of_extcon.c | 12 ++--
>> 1 file changed, 2 insertions(+), 10 deletions(-)
>>
>> diff --git a/drivers/extcon/of_extcon.c b/drivers/extcon/of_extcon.c
>> index 72173ec..0a29f82 100644
>> --- a/drivers/extcon/of_extcon.c
>> +++ b/drivers/extcon/of_extcon.c
>> @@ -32,7 +32,6 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct device
>> *dev, int index)
>> {
>> struct device_node *node;
>> struct extcon_dev *edev;
>> -struct platform_device *extcon_parent_dev;
>>
>> if (!dev->of_node) {
>> dev_dbg(dev, "device does not have a device node entry\n");
>> @@ -46,16 +45,9 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct device
>> *dev, int index)
>> return ERR_PTR(-ENODEV);
>> }
>>
>> -extcon_parent_dev = of_find_device_by_node(node);
>> -if (!extcon_parent_dev) {
>> -dev_dbg(dev, "unable to find device by node\n");
>> -return ERR_PTR(-EPROBE_DEFER);
>> -}
>> -
>> -edev = extcon_get_extcon_dev(dev_name(&extcon_parent_dev->dev));
>> +edev = extcon_get_extcon_dev(node->name);
>
> Since you no longer want to use device names I think you should add this too
> to
> warn users if they rely on using the device name.
Previous of_extcon_get_extcon_dev() support only platform device using
of_find_device_by_node.
If extcon device is based on i2c/spi/pci and so on, of_extcon_get_extcon_dev()
can't
find device instance for device name. So, I change device name from the name of
platform device
to the name of dt node.
> diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
> index bc4c789..025eb39 100644
> --- a/drivers/extcon/extcon-class.c
> +++ b/drivers/extcon/extcon-class.c
> @@ -601,7 +601,6 @@ int extcon_dev_register(struct extcon_dev *edev)
> edev->dev.class = extcon_class;
> edev->dev.release = extcon_dev_release;
>
> - edev->name = edev->name ? edev->name : dev_name(edev->dev.parent);
> //The user should always pass the 'name' as we no longer use device name while
> getting extcon device. And this name should also be the 'node' name?
> if (IS_ERR_OR_NULL(edev->name)) {
> dev_err(&edev->dev,
> "extcon device name is null\n");
>
> Btw changing to node name from device name breaks dwc3 in OMAP5 and you would
> need this too..
>
> diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
> index 2aea4bc..cea8cd3 100644
> --- a/drivers/extcon/extcon-palmas.c
> +++ b/drivers/extcon/extcon-palmas.c
> @@ -188,6 +188,7 @@ static int palmas_usb_probe(struct platform_device *pdev)
>
> palmas_usb->edev.supported_cable = palmas_extcon_cable;
> palmas_usb->edev.dev.parent = palmas_usb->dev;
> + palmas_usb->edev.name = "palmas_usb";
> palmas_usb->edev.mutually_exclusive = mutually_exclusive;
>
> status = extcon_dev_register(&palmas_usb->edev);
>
> Cheers
> Kishon
>
If node name is same as extcon device name, don't need some modification.
Also, you can modify node name in some OMAP dts file insead of modification of
extcon-palmas.c
Thanks,
Chanwoo Choi
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Re: [PATCH 1/2] extcon: of: Remove unnecessary function call by using the name of device_node
Hi,
On Tuesday 18 March 2014 05:34 PM, Chanwoo Choi wrote:
> This patch remove unnecessary function call in of_extcon_get_extcon_dev()
> by using the name of device_node structure.
>
> Signed-off-by: Chanwoo Choi
> ---
> drivers/extcon/of_extcon.c | 12 ++--
> 1 file changed, 2 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/extcon/of_extcon.c b/drivers/extcon/of_extcon.c
> index 72173ec..0a29f82 100644
> --- a/drivers/extcon/of_extcon.c
> +++ b/drivers/extcon/of_extcon.c
> @@ -32,7 +32,6 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct device
> *dev, int index)
> {
> struct device_node *node;
> struct extcon_dev *edev;
> - struct platform_device *extcon_parent_dev;
>
> if (!dev->of_node) {
> dev_dbg(dev, "device does not have a device node entry\n");
> @@ -46,16 +45,9 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct device
> *dev, int index)
> return ERR_PTR(-ENODEV);
> }
>
> - extcon_parent_dev = of_find_device_by_node(node);
> - if (!extcon_parent_dev) {
> - dev_dbg(dev, "unable to find device by node\n");
> - return ERR_PTR(-EPROBE_DEFER);
> - }
> -
> - edev = extcon_get_extcon_dev(dev_name(&extcon_parent_dev->dev));
> + edev = extcon_get_extcon_dev(node->name);
Since you no longer want to use device names I think you should add this too to
warn users if they rely on using the device name.
diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
index bc4c789..025eb39 100644
--- a/drivers/extcon/extcon-class.c
+++ b/drivers/extcon/extcon-class.c
@@ -601,7 +601,6 @@ int extcon_dev_register(struct extcon_dev *edev)
edev->dev.class = extcon_class;
edev->dev.release = extcon_dev_release;
- edev->name = edev->name ? edev->name : dev_name(edev->dev.parent);
//The user should always pass the 'name' as we no longer use device name while
getting extcon device. And this name should also be the 'node' name?
if (IS_ERR_OR_NULL(edev->name)) {
dev_err(&edev->dev,
"extcon device name is null\n");
Btw changing to node name from device name breaks dwc3 in OMAP5 and you would
need this too..
diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index 2aea4bc..cea8cd3 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -188,6 +188,7 @@ static int palmas_usb_probe(struct platform_device *pdev)
palmas_usb->edev.supported_cable = palmas_extcon_cable;
palmas_usb->edev.dev.parent = palmas_usb->dev;
+ palmas_usb->edev.name = "palmas_usb";
palmas_usb->edev.mutually_exclusive = mutually_exclusive;
status = extcon_dev_register(&palmas_usb->edev);
Cheers
Kishon
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[PATCH 1/2] extcon: of: Remove unnecessary function call by using the name of device_node
This patch remove unnecessary function call in of_extcon_get_extcon_dev()
by using the name of device_node structure.
Signed-off-by: Chanwoo Choi
---
drivers/extcon/of_extcon.c | 12 ++--
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/drivers/extcon/of_extcon.c b/drivers/extcon/of_extcon.c
index 72173ec..0a29f82 100644
--- a/drivers/extcon/of_extcon.c
+++ b/drivers/extcon/of_extcon.c
@@ -32,7 +32,6 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct device
*dev, int index)
{
struct device_node *node;
struct extcon_dev *edev;
- struct platform_device *extcon_parent_dev;
if (!dev->of_node) {
dev_dbg(dev, "device does not have a device node entry\n");
@@ -46,16 +45,9 @@ struct extcon_dev *of_extcon_get_extcon_dev(struct device
*dev, int index)
return ERR_PTR(-ENODEV);
}
- extcon_parent_dev = of_find_device_by_node(node);
- if (!extcon_parent_dev) {
- dev_dbg(dev, "unable to find device by node\n");
- return ERR_PTR(-EPROBE_DEFER);
- }
-
- edev = extcon_get_extcon_dev(dev_name(&extcon_parent_dev->dev));
+ edev = extcon_get_extcon_dev(node->name);
if (!edev) {
- dev_dbg(dev, "unable to get extcon device : %s\n",
- dev_name(&extcon_parent_dev->dev));
+ dev_dbg(dev, "unable to get extcon device : %s\n", node->name);
return ERR_PTR(-ENODEV);
}
--
1.8.0
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