2020-10-12 06:49:57

by Pawel Laszczak

Subject: [PATCH v2] usb: cdns3: Rids of duplicate error message

On failure, the platform_get_irq_byname prints an error message
so, patch removes error message related to this function from
core.c file.

A change was suggested during reviewing CDNSP driver by Chunfeng Yun.

Signed-off-by: Pawel Laszczak <[email protected]>
---
Changelog:
v2
- simplified code as sugested by Roger Quadros.

drivers/usb/cdns3/core.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
index a0f73d4711ae..85ef3025b293 100644
--- a/drivers/usb/cdns3/core.c
+++ b/drivers/usb/cdns3/core.c
@@ -469,22 +469,14 @@ static int cdns3_probe(struct platform_device *pdev)
if (cdns->dev_irq == -EPROBE_DEFER)
return cdns->dev_irq;

- if (cdns->dev_irq < 0)
- dev_err(dev, "couldn't get peripheral irq\n");
-
regs = devm_platform_ioremap_resource_byname(pdev, "dev");
if (IS_ERR(regs))
return PTR_ERR(regs);
cdns->dev_regs = regs;

cdns->otg_irq = platform_get_irq_byname(pdev, "otg");
- if (cdns->otg_irq == -EPROBE_DEFER)
- return cdns->otg_irq;
-
- if (cdns->otg_irq < 0) {
- dev_err(dev, "couldn't get otg irq\n");
+ if (cdns->otg_irq < 0)
return cdns->otg_irq;
- }

res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otg");
if (!res) {
--
2.17.1

2020-10-12 11:14:41

by Pawel Laszczak

Subject: RE: [PATCH v2] usb: cdns3: Rids of duplicate error message

Hi Roger,

On 12/10/2020 09:42, Pawel Laszczak wrote:
> On failure, the platform_get_irq_byname prints an error message
> so, patch removes error message related to this function from
> core.c file.
>
> A change was suggested during reviewing CDNSP driver by Chunfeng Yun.
>
> Signed-off-by: Pawel Laszczak <[email protected]>
> ---
> Changelog:
> v2
> - simplified code as sugested by Roger Quadros.
>
> drivers/usb/cdns3/core.c | 10 +---------
> 1 file changed, 1 insertion(+), 9 deletions(-)
>
> diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
> index a0f73d4711ae..85ef3025b293 100644
> --- a/drivers/usb/cdns3/core.c
> +++ b/drivers/usb/cdns3/core.c
> @@ -469,22 +469,14 @@ static int cdns3_probe(struct platform_device *pdev)
> if (cdns->dev_irq == -EPROBE_DEFER)

Shouldn't this be
if (cdns->dev_irq < 0)
?

No, such line will change the original behavior of driver.

Current patch allows to run driver when we support only host.
In such case the dev_irq can be < 0 and we still can use host side.

Regards,
Pawel Laszczak

> return cdns->dev_irq;
>
> - if (cdns->dev_irq < 0)
> - dev_err(dev, "couldn't get peripheral irq\n");
> -
> regs = devm_platform_ioremap_resource_byname(pdev, "dev");
> if (IS_ERR(regs))
> return PTR_ERR(regs);
> cdns->dev_regs = regs;
>
> cdns->otg_irq = platform_get_irq_byname(pdev, "otg");
> - if (cdns->otg_irq == -EPROBE_DEFER)
> - return cdns->otg_irq;
> -
> - if (cdns->otg_irq < 0) {
> - dev_err(dev, "couldn't get otg irq\n");
> + if (cdns->otg_irq < 0)
> return cdns->otg_irq;
> - }
>
> res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otg");
> if (!res) {
>

2020-10-12 11:40:24

by Roger Quadros

Subject: Re: [PATCH v2] usb: cdns3: Rids of duplicate error message

Pawel,

On 12/10/2020 14:12, Pawel Laszczak wrote:
> Hi Roger,
>
> On 12/10/2020 09:42, Pawel Laszczak wrote:
>> On failure, the platform_get_irq_byname prints an error message
>> so, patch removes error message related to this function from
>> core.c file.
>>
>> A change was suggested during reviewing CDNSP driver by Chunfeng Yun.
>>
>> Signed-off-by: Pawel Laszczak <[email protected]>
>> ---
>> Changelog:
>> v2
>> - simplified code as sugested by Roger Quadros.
>>
>> drivers/usb/cdns3/core.c | 10 +---------
>> 1 file changed, 1 insertion(+), 9 deletions(-)
>>
>> diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
>> index a0f73d4711ae..85ef3025b293 100644
>> --- a/drivers/usb/cdns3/core.c
>> +++ b/drivers/usb/cdns3/core.c
>> @@ -469,22 +469,14 @@ static int cdns3_probe(struct platform_device *pdev)
>> if (cdns->dev_irq == -EPROBE_DEFER)
>
> Shouldn't this be
> if (cdns->dev_irq < 0)
> ?
>
> No, such line will change the original behavior of driver.
>
> Current patch allows to run driver when we support only host.
> In such case the dev_irq can be < 0 and we still can use host side.

In that case should we check if we need dev_irq and if so then error out.
i.e. if mode is "peripheral" or "otg"

Also DT binding document says all 3 IRQs are mandatory. Do we need to update that?

cheers,
-roger

>
> Regards,
> Pawel Laszczak
>
>> return cdns->dev_irq;
>>
>> - if (cdns->dev_irq < 0)
>> - dev_err(dev, "couldn't get peripheral irq\n");
>> -
>> regs = devm_platform_ioremap_resource_byname(pdev, "dev");
>> if (IS_ERR(regs))
>> return PTR_ERR(regs);
>> cdns->dev_regs = regs;
>>
>> cdns->otg_irq = platform_get_irq_byname(pdev, "otg");
>> - if (cdns->otg_irq == -EPROBE_DEFER)
>> - return cdns->otg_irq;
>> -
>> - if (cdns->otg_irq < 0) {
>> - dev_err(dev, "couldn't get otg irq\n");
>> + if (cdns->otg_irq < 0)
>> return cdns->otg_irq;
>> - }
>>
>> res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otg");
>> if (!res) {
>>
>

--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

2020-10-12 12:20:45

by Peter Chen

Subject: Re: [PATCH v2] usb: cdns3: Rids of duplicate error message

On 20-10-12 14:38:16, Roger Quadros wrote:
> Pawel,
>
> On 12/10/2020 14:12, Pawel Laszczak wrote:
> > Hi Roger,
> >
> > On 12/10/2020 09:42, Pawel Laszczak wrote:
> > > On failure, the platform_get_irq_byname prints an error message
> > > so, patch removes error message related to this function from
> > > core.c file.
> > >
> > > A change was suggested during reviewing CDNSP driver by Chunfeng Yun.
> > >
> > > Signed-off-by: Pawel Laszczak <[email protected]>
> > > ---
> > > Changelog:
> > > v2
> > > - simplified code as sugested by Roger Quadros.
> > >
> > > drivers/usb/cdns3/core.c | 10 +---------
> > > 1 file changed, 1 insertion(+), 9 deletions(-)
> > >
> > > diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
> > > index a0f73d4711ae..85ef3025b293 100644
> > > --- a/drivers/usb/cdns3/core.c
> > > +++ b/drivers/usb/cdns3/core.c
> > > @@ -469,22 +469,14 @@ static int cdns3_probe(struct platform_device *pdev)
> > > if (cdns->dev_irq == -EPROBE_DEFER)
> >
> > Shouldn't this be
> > if (cdns->dev_irq < 0)
> > ?
> >
> > No, such line will change the original behavior of driver.
> >
> > Current patch allows to run driver when we support only host.
> > In such case the dev_irq can be < 0 and we still can use host side.
>
> In that case should we check if we need dev_irq and if so then error out.
> i.e. if mode is "peripheral" or "otg"
>
> Also DT binding document says all 3 IRQs are mandatory. Do we need to update that?
>

I agree with Roger, or you change the driver behaviour that return error
if the dev_irq is < 0.

Peter
>
> >
> > Regards,
> > Pawel Laszczak
> >
> > > return cdns->dev_irq;
> > > - if (cdns->dev_irq < 0)
> > > - dev_err(dev, "couldn't get peripheral irq\n");
> > > -
> > > regs = devm_platform_ioremap_resource_byname(pdev, "dev");
> > > if (IS_ERR(regs))
> > > return PTR_ERR(regs);
> > > cdns->dev_regs = regs;
> > > cdns->otg_irq = platform_get_irq_byname(pdev, "otg");
> > > - if (cdns->otg_irq == -EPROBE_DEFER)
> > > - return cdns->otg_irq;
> > > -
> > > - if (cdns->otg_irq < 0) {
> > > - dev_err(dev, "couldn't get otg irq\n");
> > > + if (cdns->otg_irq < 0)
> > > return cdns->otg_irq;
> > > - }
> > > res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otg");
> > > if (!res) {
> > >
> >
>
> --
> Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
> Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

--

Thanks,
Peter Chen

2020-10-12 12:29:11

by Pawel Laszczak

Subject: RE: [PATCH v2] usb: cdns3: Rids of duplicate error message

>
>On 20-10-12 14:38:16, Roger Quadros wrote:
>> Pawel,
>>
>> On 12/10/2020 14:12, Pawel Laszczak wrote:
>> > Hi Roger,
>> >
>> > On 12/10/2020 09:42, Pawel Laszczak wrote:
>> > > On failure, the platform_get_irq_byname prints an error message
>> > > so, patch removes error message related to this function from
>> > > core.c file.
>> > >
>> > > A change was suggested during reviewing CDNSP driver by Chunfeng Yun.
>> > >
>> > > Signed-off-by: Pawel Laszczak <[email protected]>
>> > > ---
>> > > Changelog:
>> > > v2
>> > > - simplified code as sugested by Roger Quadros.
>> > >
>> > > drivers/usb/cdns3/core.c | 10 +---------
>> > > 1 file changed, 1 insertion(+), 9 deletions(-)
>> > >
>> > > diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
>> > > index a0f73d4711ae..85ef3025b293 100644
>> > > --- a/drivers/usb/cdns3/core.c
>> > > +++ b/drivers/usb/cdns3/core.c
>> > > @@ -469,22 +469,14 @@ static int cdns3_probe(struct platform_device *pdev)
>> > > if (cdns->dev_irq == -EPROBE_DEFER)
>> >
>> > Shouldn't this be
>> > if (cdns->dev_irq < 0)
>> > ?
>> >
>> > No, such line will change the original behavior of driver.
>> >
>> > Current patch allows to run driver when we support only host.
>> > In such case the dev_irq can be < 0 and we still can use host side.
>>
>> In that case should we check if we need dev_irq and if so then error out.
>> i.e. if mode is "peripheral" or "otg"
>>
>> Also DT binding document says all 3 IRQs are mandatory. Do we need to update that?
>>
>
>I agree with Roger, or you change the driver behaviour that return error
>if the dev_irq is < 0.

Ok, I will change the condition as suggested by Roger.

Pawel
>
>Peter
>>
>> >
>> > Regards,
>> > Pawel Laszczak
>> >
>> > > return cdns->dev_irq;
>> > > - if (cdns->dev_irq < 0)
>> > > - dev_err(dev, "couldn't get peripheral irq\n");
>> > > -
>> > > regs = devm_platform_ioremap_resource_byname(pdev, "dev");
>> > > if (IS_ERR(regs))
>> > > return PTR_ERR(regs);
>> > > cdns->dev_regs = regs;
>> > > cdns->otg_irq = platform_get_irq_byname(pdev, "otg");
>> > > - if (cdns->otg_irq == -EPROBE_DEFER)
>> > > - return cdns->otg_irq;
>> > > -
>> > > - if (cdns->otg_irq < 0) {
>> > > - dev_err(dev, "couldn't get otg irq\n");
>> > > + if (cdns->otg_irq < 0)
>> > > return cdns->otg_irq;
>> > > - }
>> > > res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otg");
>> > > if (!res) {
>> > >
>> >
>>
>> --
>> Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
>> Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
>
>--
>
>Thanks,
>Peter Chen

2020-10-12 12:55:58

by Roger Quadros

Subject: Re: [PATCH v2] usb: cdns3: Rids of duplicate error message

Hi Pawel,

On 12/10/2020 09:42, Pawel Laszczak wrote:
> On failure, the platform_get_irq_byname prints an error message
> so, patch removes error message related to this function from
> core.c file.
>
> A change was suggested during reviewing CDNSP driver by Chunfeng Yun.
>
> Signed-off-by: Pawel Laszczak <[email protected]>
> ---
> Changelog:
> v2
> - simplified code as sugested by Roger Quadros.
>
> drivers/usb/cdns3/core.c | 10 +---------
> 1 file changed, 1 insertion(+), 9 deletions(-)
>
> diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
> index a0f73d4711ae..85ef3025b293 100644
> --- a/drivers/usb/cdns3/core.c
> +++ b/drivers/usb/cdns3/core.c
> @@ -469,22 +469,14 @@ static int cdns3_probe(struct platform_device *pdev)
> if (cdns->dev_irq == -EPROBE_DEFER)

Shouldn't this be
if (cdns->dev_irq < 0)
?

> return cdns->dev_irq;
>
> - if (cdns->dev_irq < 0)
> - dev_err(dev, "couldn't get peripheral irq\n");
> -
> regs = devm_platform_ioremap_resource_byname(pdev, "dev");
> if (IS_ERR(regs))
> return PTR_ERR(regs);
> cdns->dev_regs = regs;
>
> cdns->otg_irq = platform_get_irq_byname(pdev, "otg");
> - if (cdns->otg_irq == -EPROBE_DEFER)
> - return cdns->otg_irq;
> -
> - if (cdns->otg_irq < 0) {
> - dev_err(dev, "couldn't get otg irq\n");
> + if (cdns->otg_irq < 0)
> return cdns->otg_irq;
> - }
>
> res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otg");
> if (!res) {
>

--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki