2020-06-24 15:06:58

by Lee Jones

[permalink] [raw]
Subject: [PATCH 3/8] backlight: ili922x: Add missing kerneldoc descriptions for CHECK_FREQ_REG() args

Kerneldoc syntax is used, but not complete. Descriptions required.

Prevents warnings like:

drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 's' not described in 'CHECK_FREQ_REG'
drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 'x' not described in 'CHECK_FREQ_REG'

Cc: <[email protected]>
Cc: Bartlomiej Zolnierkiewicz <[email protected]>
Cc: Software Engineering <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
---
drivers/video/backlight/ili922x.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c
index 9c5aa3fbb2842..8cb4b9d3c3bba 100644
--- a/drivers/video/backlight/ili922x.c
+++ b/drivers/video/backlight/ili922x.c
@@ -107,6 +107,8 @@
* lower frequency when the registers are read/written.
* The macro sets the frequency in the spi_transfer structure if
* the frequency exceeds the maximum value.
+ * @s: pointer to controller side proxy for an SPI slave device
+ * @x: pointer to the read/write buffer pair
*/
#define CHECK_FREQ_REG(s, x) \
do { \
--
2.25.1


2020-06-25 10:02:20

by Daniel Thompson

[permalink] [raw]
Subject: Re: [PATCH 3/8] backlight: ili922x: Add missing kerneldoc descriptions for CHECK_FREQ_REG() args

On Wed, Jun 24, 2020 at 03:57:16PM +0100, Lee Jones wrote:
> Kerneldoc syntax is used, but not complete. Descriptions required.
>
> Prevents warnings like:
>
> drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 's' not described in 'CHECK_FREQ_REG'
> drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 'x' not described in 'CHECK_FREQ_REG'
>
> Cc: <[email protected]>
> Cc: Bartlomiej Zolnierkiewicz <[email protected]>
> Cc: Software Engineering <[email protected]>
> Signed-off-by: Lee Jones <[email protected]>
> ---
> drivers/video/backlight/ili922x.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c
> index 9c5aa3fbb2842..8cb4b9d3c3bba 100644
> --- a/drivers/video/backlight/ili922x.c
> +++ b/drivers/video/backlight/ili922x.c
> @@ -107,6 +107,8 @@
> * lower frequency when the registers are read/written.
> * The macro sets the frequency in the spi_transfer structure if
> * the frequency exceeds the maximum value.
> + * @s: pointer to controller side proxy for an SPI slave device

What's wrong with "a pointer to an SPI device"?

I am aware, having looked it up to find out what the above actually
means, that this is how struct spi_device is described in its own kernel
doc but quoting at that level of detail of both overkill and confusing.


Daniel.


> + * @x: pointer to the read/write buffer pair
> */
> #define CHECK_FREQ_REG(s, x) \
> do { \
> --
> 2.25.1
>

2020-06-25 10:36:45

by Lee Jones

[permalink] [raw]
Subject: Re: [PATCH 3/8] backlight: ili922x: Add missing kerneldoc descriptions for CHECK_FREQ_REG() args

On Thu, 25 Jun 2020, Daniel Thompson wrote:

> On Wed, Jun 24, 2020 at 03:57:16PM +0100, Lee Jones wrote:
> > Kerneldoc syntax is used, but not complete. Descriptions required.
> >
> > Prevents warnings like:
> >
> > drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 's' not described in 'CHECK_FREQ_REG'
> > drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 'x' not described in 'CHECK_FREQ_REG'
> >
> > Cc: <[email protected]>
> > Cc: Bartlomiej Zolnierkiewicz <[email protected]>
> > Cc: Software Engineering <[email protected]>
> > Signed-off-by: Lee Jones <[email protected]>
> > ---
> > drivers/video/backlight/ili922x.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c
> > index 9c5aa3fbb2842..8cb4b9d3c3bba 100644
> > --- a/drivers/video/backlight/ili922x.c
> > +++ b/drivers/video/backlight/ili922x.c
> > @@ -107,6 +107,8 @@
> > * lower frequency when the registers are read/written.
> > * The macro sets the frequency in the spi_transfer structure if
> > * the frequency exceeds the maximum value.
> > + * @s: pointer to controller side proxy for an SPI slave device
>
> What's wrong with "a pointer to an SPI device"?
>
> I am aware, having looked it up to find out what the above actually
> means, that this is how struct spi_device is described in its own kernel
> doc but quoting at that level of detail of both overkill and confusing.

I figured that using the official description would be better than
making something up. However if you think it's better to KISS, then I
can change it.

--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog

2020-06-26 11:42:04

by Daniel Thompson

[permalink] [raw]
Subject: Re: [PATCH 3/8] backlight: ili922x: Add missing kerneldoc descriptions for CHECK_FREQ_REG() args

On Thu, Jun 25, 2020 at 11:33:34AM +0100, Lee Jones wrote:
> On Thu, 25 Jun 2020, Daniel Thompson wrote:
>
> > On Wed, Jun 24, 2020 at 03:57:16PM +0100, Lee Jones wrote:
> > > Kerneldoc syntax is used, but not complete. Descriptions required.
> > >
> > > Prevents warnings like:
> > >
> > > drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 's' not described in 'CHECK_FREQ_REG'
> > > drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 'x' not described in 'CHECK_FREQ_REG'
> > >
> > > Cc: <[email protected]>
> > > Cc: Bartlomiej Zolnierkiewicz <[email protected]>
> > > Cc: Software Engineering <[email protected]>
> > > Signed-off-by: Lee Jones <[email protected]>
> > > ---
> > > drivers/video/backlight/ili922x.c | 2 ++
> > > 1 file changed, 2 insertions(+)
> > >
> > > diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c
> > > index 9c5aa3fbb2842..8cb4b9d3c3bba 100644
> > > --- a/drivers/video/backlight/ili922x.c
> > > +++ b/drivers/video/backlight/ili922x.c
> > > @@ -107,6 +107,8 @@
> > > * lower frequency when the registers are read/written.
> > > * The macro sets the frequency in the spi_transfer structure if
> > > * the frequency exceeds the maximum value.
> > > + * @s: pointer to controller side proxy for an SPI slave device
> >
> > What's wrong with "a pointer to an SPI device"?
> >
> > I am aware, having looked it up to find out what the above actually
> > means, that this is how struct spi_device is described in its own kernel
> > doc but quoting at that level of detail of both overkill and confusing.
>
> I figured that using the official description would be better than
> making something up. However if you think it's better to KISS, then I
> can change it.

Yes, I'd strongly prefer KISS here.

I know it is an "I am the world" argument[1] but I found using such a
dogmatically accurate description out of context to be very confusing
and therefore I don't think such a comment improves readability.


Daniel.


[1]: See #3 from http://www.leany.com/logic/Adams.html

2020-06-26 16:54:24

by Lee Jones

[permalink] [raw]
Subject: Re: [PATCH 3/8] backlight: ili922x: Add missing kerneldoc descriptions for CHECK_FREQ_REG() args

On Fri, 26 Jun 2020, Daniel Thompson wrote:

> On Thu, Jun 25, 2020 at 11:33:34AM +0100, Lee Jones wrote:
> > On Thu, 25 Jun 2020, Daniel Thompson wrote:
> >
> > > On Wed, Jun 24, 2020 at 03:57:16PM +0100, Lee Jones wrote:
> > > > Kerneldoc syntax is used, but not complete. Descriptions required.
> > > >
> > > > Prevents warnings like:
> > > >
> > > > drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 's' not described in 'CHECK_FREQ_REG'
> > > > drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 'x' not described in 'CHECK_FREQ_REG'
> > > >
> > > > Cc: <[email protected]>
> > > > Cc: Bartlomiej Zolnierkiewicz <[email protected]>
> > > > Cc: Software Engineering <[email protected]>
> > > > Signed-off-by: Lee Jones <[email protected]>
> > > > ---
> > > > drivers/video/backlight/ili922x.c | 2 ++
> > > > 1 file changed, 2 insertions(+)
> > > >
> > > > diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c
> > > > index 9c5aa3fbb2842..8cb4b9d3c3bba 100644
> > > > --- a/drivers/video/backlight/ili922x.c
> > > > +++ b/drivers/video/backlight/ili922x.c
> > > > @@ -107,6 +107,8 @@
> > > > * lower frequency when the registers are read/written.
> > > > * The macro sets the frequency in the spi_transfer structure if
> > > > * the frequency exceeds the maximum value.
> > > > + * @s: pointer to controller side proxy for an SPI slave device
> > >
> > > What's wrong with "a pointer to an SPI device"?
> > >
> > > I am aware, having looked it up to find out what the above actually
> > > means, that this is how struct spi_device is described in its own kernel
> > > doc but quoting at that level of detail of both overkill and confusing.
> >
> > I figured that using the official description would be better than
> > making something up. However if you think it's better to KISS, then I
> > can change it.
>
> Yes, I'd strongly prefer KISS here.
>
> I know it is an "I am the world" argument[1] but I found using such a
> dogmatically accurate description out of context to be very confusing
> and therefore I don't think such a comment improves readability.
>
> [1]: See #3 from http://www.leany.com/logic/Adams.html

It's fine, you are the world, I get it. ;)

Do you even like Country music?

Will fix!

--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog

2020-07-06 07:13:52

by Lee Jones

[permalink] [raw]
Subject: Re: [PATCH 3/8] backlight: ili922x: Add missing kerneldoc descriptions for CHECK_FREQ_REG() args

On Thu, 25 Jun 2020, Daniel Thompson wrote:

> On Wed, Jun 24, 2020 at 03:57:16PM +0100, Lee Jones wrote:
> > Kerneldoc syntax is used, but not complete. Descriptions required.
> >
> > Prevents warnings like:
> >
> > drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 's' not described in 'CHECK_FREQ_REG'
> > drivers/video/backlight/ili922x.c:116: warning: Function parameter or member 'x' not described in 'CHECK_FREQ_REG'
> >
> > Cc: <[email protected]>
> > Cc: Bartlomiej Zolnierkiewicz <[email protected]>
> > Cc: Software Engineering <[email protected]>
> > Signed-off-by: Lee Jones <[email protected]>
> > ---
> > drivers/video/backlight/ili922x.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c
> > index 9c5aa3fbb2842..8cb4b9d3c3bba 100644
> > --- a/drivers/video/backlight/ili922x.c
> > +++ b/drivers/video/backlight/ili922x.c
> > @@ -107,6 +107,8 @@
> > * lower frequency when the registers are read/written.
> > * The macro sets the frequency in the spi_transfer structure if
> > * the frequency exceeds the maximum value.
> > + * @s: pointer to controller side proxy for an SPI slave device
>
> What's wrong with "a pointer to an SPI device"?

I've fixed this and applied the patch.

--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog