mbox series

[0/8] Fix a bunch of W=1 warnings in Backlight

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

Message

Lee Jones June 24, 2020, 2:57 p.m. UTC
Attempting to clean-up W=1 kernel builds, which are currently
overwhelmingly riddled with niggly little warnings.

Lee Jones (8):
  backlight: lms501kf03: Remove unused const variables
  backlight: lcd: Add missing kerneldoc entry for 'struct device parent'
  backlight: ili922x: Add missing kerneldoc descriptions for
    CHECK_FREQ_REG() args
  backlight: ili922x: Remove invalid use of kerneldoc syntax
  backlight: ili922x: Add missing kerneldoc description for
    ili922x_reg_dump()'s arg
  backlight: backlight: Supply description for function args in existing
    Kerneldocs
  backlight: lm3630a_bl: Remove invalid checks for unsigned int < 0
  backlight: qcom-wled: Remove unused configs for LED3 and LED4

 drivers/video/backlight/backlight.c  | 2 ++
 drivers/video/backlight/ili922x.c    | 8 ++++++--
 drivers/video/backlight/lcd.c        | 1 +
 drivers/video/backlight/lm3630a_bl.c | 4 ++--
 drivers/video/backlight/lms501kf03.c | 8 --------
 drivers/video/backlight/qcom-wled.c  | 8 --------
 6 files changed, 11 insertions(+), 20 deletions(-)

Comments

Sam Ravnborg June 24, 2020, 3:32 p.m. UTC | #1
Hi Lee.

On Wed, Jun 24, 2020 at 03:57:13PM +0100, Lee Jones wrote:
> Attempting to clean-up W=1 kernel builds, which are currently
> overwhelmingly riddled with niggly little warnings.
> 
> Lee Jones (8):
>   backlight: lms501kf03: Remove unused const variables
>   backlight: lcd: Add missing kerneldoc entry for 'struct device parent'


>   backlight: ili922x: Add missing kerneldoc descriptions for
>     CHECK_FREQ_REG() args
>   backlight: ili922x: Remove invalid use of kerneldoc syntax
>   backlight: ili922x: Add missing kerneldoc description for
>     ili922x_reg_dump()'s arg
I wonder why these warnings show up as nothing pulls in this .c file.
Anyway I would suggest to drop using kerneldoc syntax for single drivers
like this - and the benefit here is low.
Now they are typed, otherwise this ahd been fine in a single patch.

>   backlight: backlight: Supply description for function args in existing
>     Kerneldocs
>   backlight: lm3630a_bl: Remove invalid checks for unsigned int < 0
>   backlight: qcom-wled: Remove unused configs for LED3 and LED4

The other fixes looks good.
They are all:
Acked-by: Sam Ravnborg <sam@ravnborg.org>

	Sam

>  drivers/video/backlight/backlight.c  | 2 ++
>  drivers/video/backlight/ili922x.c    | 8 ++++++--
>  drivers/video/backlight/lcd.c        | 1 +
>  drivers/video/backlight/lm3630a_bl.c | 4 ++--
>  drivers/video/backlight/lms501kf03.c | 8 --------
>  drivers/video/backlight/qcom-wled.c  | 8 --------
>  6 files changed, 11 insertions(+), 20 deletions(-)
> 
> -- 
> 2.25.1
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
Lee Jones June 24, 2020, 3:43 p.m. UTC | #2
On Wed, 24 Jun 2020, Sam Ravnborg wrote:

> Hi Lee.
> 
> On Wed, Jun 24, 2020 at 03:57:13PM +0100, Lee Jones wrote:
> > Attempting to clean-up W=1 kernel builds, which are currently
> > overwhelmingly riddled with niggly little warnings.
> > 
> > Lee Jones (8):
> >   backlight: lms501kf03: Remove unused const variables
> >   backlight: lcd: Add missing kerneldoc entry for 'struct device parent'
> 
> 
> >   backlight: ili922x: Add missing kerneldoc descriptions for
> >     CHECK_FREQ_REG() args
> >   backlight: ili922x: Remove invalid use of kerneldoc syntax
> >   backlight: ili922x: Add missing kerneldoc description for
> >     ili922x_reg_dump()'s arg
> I wonder why these warnings show up as nothing pulls in this .c file.
> Anyway I would suggest to drop using kerneldoc syntax for single drivers
> like this - and the benefit here is low.
> Now they are typed, otherwise this ahd been fine in a single patch.

What do you mean by 'nothing pulls it in'?

> >   backlight: backlight: Supply description for function args in existing
> >     Kerneldocs
> >   backlight: lm3630a_bl: Remove invalid checks for unsigned int < 0
> >   backlight: qcom-wled: Remove unused configs for LED3 and LED4
> 
> The other fixes looks good.
> They are all:
> Acked-by: Sam Ravnborg <sam@ravnborg.org>

Thanks (although this should be Reviewed-by).

> >  drivers/video/backlight/backlight.c  | 2 ++
> >  drivers/video/backlight/ili922x.c    | 8 ++++++--
> >  drivers/video/backlight/lcd.c        | 1 +
> >  drivers/video/backlight/lm3630a_bl.c | 4 ++--
> >  drivers/video/backlight/lms501kf03.c | 8 --------
> >  drivers/video/backlight/qcom-wled.c  | 8 --------
> >  6 files changed, 11 insertions(+), 20 deletions(-)
> >
Sam Ravnborg June 24, 2020, 4:24 p.m. UTC | #3
Hi Lee.

On Wed, Jun 24, 2020 at 04:43:21PM +0100, Lee Jones wrote:
> On Wed, 24 Jun 2020, Sam Ravnborg wrote:
> 
> > Hi Lee.
> > 
> > On Wed, Jun 24, 2020 at 03:57:13PM +0100, Lee Jones wrote:
> > > Attempting to clean-up W=1 kernel builds, which are currently
> > > overwhelmingly riddled with niggly little warnings.
> > > 
> > > Lee Jones (8):
> > >   backlight: lms501kf03: Remove unused const variables
> > >   backlight: lcd: Add missing kerneldoc entry for 'struct device parent'
> > 
> > 
> > >   backlight: ili922x: Add missing kerneldoc descriptions for
> > >     CHECK_FREQ_REG() args
> > >   backlight: ili922x: Remove invalid use of kerneldoc syntax
> > >   backlight: ili922x: Add missing kerneldoc description for
> > >     ili922x_reg_dump()'s arg
> > I wonder why these warnings show up as nothing pulls in this .c file.
> > Anyway I would suggest to drop using kerneldoc syntax for single drivers
> > like this - and the benefit here is low.
> > Now they are typed, otherwise this ahd been fine in a single patch.
> 
> What do you mean by 'nothing pulls it in'?
There are no .rst files that includes any:
.. kernel-doc:: drivers/video/backlight/ili922x.c

so I do not see how the kernel-doc comments will be used by any
of the generated kernel-docs.

	Sam

> 
> > >   backlight: backlight: Supply description for function args in existing
> > >     Kerneldocs
> > >   backlight: lm3630a_bl: Remove invalid checks for unsigned int < 0
> > >   backlight: qcom-wled: Remove unused configs for LED3 and LED4
> > 
> > The other fixes looks good.
> > They are all:
> > Acked-by: Sam Ravnborg <sam@ravnborg.org>
> 
> Thanks (although this should be Reviewed-by).
> 
> > >  drivers/video/backlight/backlight.c  | 2 ++
> > >  drivers/video/backlight/ili922x.c    | 8 ++++++--
> > >  drivers/video/backlight/lcd.c        | 1 +
> > >  drivers/video/backlight/lm3630a_bl.c | 4 ++--
> > >  drivers/video/backlight/lms501kf03.c | 8 --------
> > >  drivers/video/backlight/qcom-wled.c  | 8 --------
> > >  6 files changed, 11 insertions(+), 20 deletions(-)
> > > 
> 
> -- 
> Lee Jones [李琼斯]
> Senior Technical Lead - Developer Services
> Linaro.org │ Open source software for Arm SoCs
> Follow Linaro: Facebook | Twitter | Blog
Lee Jones June 25, 2020, 8:03 a.m. UTC | #4
On Wed, 24 Jun 2020, Sam Ravnborg wrote:

> Hi Lee.
> 
> On Wed, Jun 24, 2020 at 04:43:21PM +0100, Lee Jones wrote:
> > On Wed, 24 Jun 2020, Sam Ravnborg wrote:
> > 
> > > Hi Lee.
> > > 
> > > On Wed, Jun 24, 2020 at 03:57:13PM +0100, Lee Jones wrote:
> > > > Attempting to clean-up W=1 kernel builds, which are currently
> > > > overwhelmingly riddled with niggly little warnings.
> > > > 
> > > > Lee Jones (8):
> > > >   backlight: lms501kf03: Remove unused const variables
> > > >   backlight: lcd: Add missing kerneldoc entry for 'struct device parent'
> > > 
> > > 
> > > >   backlight: ili922x: Add missing kerneldoc descriptions for
> > > >     CHECK_FREQ_REG() args
> > > >   backlight: ili922x: Remove invalid use of kerneldoc syntax
> > > >   backlight: ili922x: Add missing kerneldoc description for
> > > >     ili922x_reg_dump()'s arg
> > > I wonder why these warnings show up as nothing pulls in this .c file.
> > > Anyway I would suggest to drop using kerneldoc syntax for single drivers
> > > like this - and the benefit here is low.
> > > Now they are typed, otherwise this ahd been fine in a single patch.
> > 
> > What do you mean by 'nothing pulls it in'?
> There are no .rst files that includes any:
> .. kernel-doc:: drivers/video/backlight/ili922x.c
> 
> so I do not see how the kernel-doc comments will be used by any
> of the generated kernel-docs.

Looks like a common problem (if it is actually a problem):

 $ ./scripts/find-unused-docs.sh . | wc -l
 1476

The role of this patch-set is not to eradicate unused kerneldoc
headers, but to ensure they are formatted correctly.  W=1 builds
currently complain of ill formatted kerneldocs, which is currently
littering the build-log and masking some more important issues (which
I'm also trying to fix en route).

> > > >   backlight: backlight: Supply description for function args in existing
> > > >     Kerneldocs
> > > >   backlight: lm3630a_bl: Remove invalid checks for unsigned int < 0
> > > >   backlight: qcom-wled: Remove unused configs for LED3 and LED4
> > > 
> > > The other fixes looks good.
> > > They are all:
> > > Acked-by: Sam Ravnborg <sam@ravnborg.org>
> > 
> > Thanks (although this should be Reviewed-by).
> > 
> > > >  drivers/video/backlight/backlight.c  | 2 ++
> > > >  drivers/video/backlight/ili922x.c    | 8 ++++++--
> > > >  drivers/video/backlight/lcd.c        | 1 +
> > > >  drivers/video/backlight/lm3630a_bl.c | 4 ++--
> > > >  drivers/video/backlight/lms501kf03.c | 8 --------
> > > >  drivers/video/backlight/qcom-wled.c  | 8 --------
> > > >  6 files changed, 11 insertions(+), 20 deletions(-)
> > > > 
> >
Sam Ravnborg June 25, 2020, 6:57 p.m. UTC | #5
Hi Lee.

On Thu, Jun 25, 2020 at 09:03:37AM +0100, Lee Jones wrote:
> On Wed, 24 Jun 2020, Sam Ravnborg wrote:
> 
> > Hi Lee.
> > 
> > On Wed, Jun 24, 2020 at 04:43:21PM +0100, Lee Jones wrote:
> > > On Wed, 24 Jun 2020, Sam Ravnborg wrote:
> > > 
> > > > Hi Lee.
> > > > 
> > > > On Wed, Jun 24, 2020 at 03:57:13PM +0100, Lee Jones wrote:
> > > > > Attempting to clean-up W=1 kernel builds, which are currently
> > > > > overwhelmingly riddled with niggly little warnings.
> > > > > 
> > > > > Lee Jones (8):
> > > > >   backlight: lms501kf03: Remove unused const variables
> > > > >   backlight: lcd: Add missing kerneldoc entry for 'struct device parent'
> > > > 
> > > > 
> > > > >   backlight: ili922x: Add missing kerneldoc descriptions for
> > > > >     CHECK_FREQ_REG() args
> > > > >   backlight: ili922x: Remove invalid use of kerneldoc syntax
> > > > >   backlight: ili922x: Add missing kerneldoc description for
> > > > >     ili922x_reg_dump()'s arg
> > > > I wonder why these warnings show up as nothing pulls in this .c file.
> > > > Anyway I would suggest to drop using kerneldoc syntax for single drivers
> > > > like this - and the benefit here is low.
> > > > Now they are typed, otherwise this ahd been fine in a single patch.
> > > 
> > > What do you mean by 'nothing pulls it in'?
> > There are no .rst files that includes any:
> > .. kernel-doc:: drivers/video/backlight/ili922x.c
> > 
> > so I do not see how the kernel-doc comments will be used by any
> > of the generated kernel-docs.
> 
> Looks like a common problem (if it is actually a problem):
> 
>  $ ./scripts/find-unused-docs.sh . | wc -l
>  1476
> 
> The role of this patch-set is not to eradicate unused kerneldoc
> headers, but to ensure they are formatted correctly.  W=1 builds
> currently complain of ill formatted kerneldocs, which is currently
> littering the build-log and masking some more important issues (which
> I'm also trying to fix en route).

My point is that I do not see why we should maintain correct kernel-doc
style comments for files that are not used to to generate kernel-doc.
It would serve us better to drop the kernel-doc style comments.
But thats just my opinion, feel free to ignore.

I digged a little and can see we run kernel-doc on all .c files
when we specify W=1 - which was a suprise to me.
That explains why I had not seen said warnings in my regular make
htmldocs runs.

	Sam

> 
> > > > >   backlight: backlight: Supply description for function args in existing
> > > > >     Kerneldocs
> > > > >   backlight: lm3630a_bl: Remove invalid checks for unsigned int < 0
> > > > >   backlight: qcom-wled: Remove unused configs for LED3 and LED4
> > > > 
> > > > The other fixes looks good.
> > > > They are all:
> > > > Acked-by: Sam Ravnborg <sam@ravnborg.org>
> > > 
> > > Thanks (although this should be Reviewed-by).
> > > 
> > > > >  drivers/video/backlight/backlight.c  | 2 ++
> > > > >  drivers/video/backlight/ili922x.c    | 8 ++++++--
> > > > >  drivers/video/backlight/lcd.c        | 1 +
> > > > >  drivers/video/backlight/lm3630a_bl.c | 4 ++--
> > > > >  drivers/video/backlight/lms501kf03.c | 8 --------
> > > > >  drivers/video/backlight/qcom-wled.c  | 8 --------
> > > > >  6 files changed, 11 insertions(+), 20 deletions(-)
> > > > > 
> > > 
> 
> -- 
> Lee Jones [李琼斯]
> Senior Technical Lead - Developer Services
> Linaro.org │ Open source software for Arm SoCs
> Follow Linaro: Facebook | Twitter | Blog
Lee Jones July 6, 2020, 7:13 a.m. UTC | #6
On Wed, 24 Jun 2020, Lee Jones wrote:

> Attempting to clean-up W=1 kernel builds, which are currently
> overwhelmingly riddled with niggly little warnings.
> 
> Lee Jones (8):
>   backlight: lms501kf03: Remove unused const variables
>   backlight: lcd: Add missing kerneldoc entry for 'struct device parent'
>   backlight: ili922x: Add missing kerneldoc descriptions for
>     CHECK_FREQ_REG() args
>   backlight: ili922x: Remove invalid use of kerneldoc syntax
>   backlight: ili922x: Add missing kerneldoc description for
>     ili922x_reg_dump()'s arg
>   backlight: backlight: Supply description for function args in existing
>     Kerneldocs
>   backlight: lm3630a_bl: Remove invalid checks for unsigned int < 0
>   backlight: qcom-wled: Remove unused configs for LED3 and LED4
> 
>  drivers/video/backlight/backlight.c  | 2 ++
>  drivers/video/backlight/ili922x.c    | 8 ++++++--
>  drivers/video/backlight/lcd.c        | 1 +
>  drivers/video/backlight/lm3630a_bl.c | 4 ++--
>  drivers/video/backlight/lms501kf03.c | 8 --------
>  drivers/video/backlight/qcom-wled.c  | 8 --------
>  6 files changed, 11 insertions(+), 20 deletions(-)

All applied to Backlight.