diff mbox series

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

Message ID 20200624145721.2590327-4-lee.jones@linaro.org (mailing list archive)
State Superseded, archived
Headers show
Series Fix a bunch of W=1 warnings in Backlight | expand

Commit Message

Lee Jones June 24, 2020, 2:57 p.m. UTC
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: <stable@vger.kernel.org>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Software Engineering <sbabic@denx.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 drivers/video/backlight/ili922x.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Daniel Thompson June 25, 2020, 9:40 a.m. UTC | #1
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: <stable@vger.kernel.org>
> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> Cc: Software Engineering <sbabic@denx.de>
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> ---
>  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
>
Lee Jones June 25, 2020, 10:33 a.m. UTC | #2
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: <stable@vger.kernel.org>
> > Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> > Cc: Software Engineering <sbabic@denx.de>
> > Signed-off-by: Lee Jones <lee.jones@linaro.org>
> > ---
> >  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.
Daniel Thompson June 26, 2020, 9:54 a.m. UTC | #3
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: <stable@vger.kernel.org>
> > > Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> > > Cc: Software Engineering <sbabic@denx.de>
> > > Signed-off-by: Lee Jones <lee.jones@linaro.org>
> > > ---
> > >  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
Lee Jones June 26, 2020, 3:33 p.m. UTC | #4
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: <stable@vger.kernel.org>
> > > > Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> > > > Cc: Software Engineering <sbabic@denx.de>
> > > > Signed-off-by: Lee Jones <lee.jones@linaro.org>
> > > > ---
> > > >  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 July 6, 2020, 7:12 a.m. UTC | #5
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: <stable@vger.kernel.org>
> > Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> > Cc: Software Engineering <sbabic@denx.de>
> > Signed-off-by: Lee Jones <lee.jones@linaro.org>
> > ---
> >  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.
diff mbox series

Patch

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 {			\