[PATCH v2 0/3]: fix unnecessary includes and add missing ones across multiple drivers

[PATCH v2 0/3]: fix unnecessary includes and add missing ones across multiple drivers

[Caio Morais]

From: Caio Morais <caiomorais@usp.br>

This series removes unnecessary includes and adds missing ones as reported
by the include-what-you-use (IWYU) tool across different IIO drivers.

Caio Morais (3):
  iio: adc: xilinx-xadc: remove unnecessary includes and add missing
    ones
  iio: buffer: industrialio-triggered-buffer: fix includes with IWYU
  iio: common: st_sensors: fix includes with IWYU

 drivers/iio/adc/xilinx-xadc-events.c               | 6 +++++-
 drivers/iio/buffer/industrialio-triggered-buffer.c | 6 ++++--
 drivers/iio/common/st_sensors/st_sensors_i2c.c     | 7 +++++--
 drivers/iio/common/st_sensors/st_sensors_spi.c     | 9 +++++++--
 4 files changed, 21 insertions(+), 7 deletions(-)

-- 
2.54.0

[PATCH 1/3] iio: adc: xilinx-xadc: remove unnecessary includes and add missing ones

[Caio Morais]

From: Caio Morais <caiomorais@usp.br>

Signed-off-by: Caio Morais <caiomorais@usp.br>
---
 drivers/iio/adc/xilinx-xadc-events.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/xilinx-xadc-events.c b/drivers/iio/adc/xilinx-xadc-events.c
index c188d3dca..31cda8e69 100644
--- a/drivers/iio/adc/xilinx-xadc-events.c
+++ b/drivers/iio/adc/xilinx-xadc-events.c
@@ -6,9 +6,13 @@
  *  Author: Lars-Peter Clausen <lars@metafoo.de>
  */
 
+#include <linux/bitmap.h>
+#include <linux/errno.h>
+#include <linux/mutex.h>
+#include <linux/types.h>
+
 #include <linux/iio/events.h>
 #include <linux/iio/iio.h>
-#include <linux/kernel.h>
 
 #include "xilinx-xadc.h"
 
-- 
2.54.0

[PATCH 2/3] iio: buffer: industrialio-triggered-buffer: fix includes with IWYU

[Caio Morais]

From: Caio Morais <caiomorais@usp.br>

Signed-off-by: Caio Morais <caiomorais@usp.br>
---
 drivers/iio/buffer/industrialio-triggered-buffer.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/buffer/industrialio-triggered-buffer.c b/drivers/iio/buffer/industrialio-triggered-buffer.c
index 9bf75dee7..a91d439d7 100644
--- a/drivers/iio/buffer/industrialio-triggered-buffer.c
+++ b/drivers/iio/buffer/industrialio-triggered-buffer.c
@@ -4,9 +4,11 @@
  *  Author: Lars-Peter Clausen <lars@metafoo.de>
  */
 
-#include <linux/kernel.h>
-#include <linux/export.h>
+#include <linux/errno.h>
+#include <linux/linkage.h>
 #include <linux/module.h>
+#include <linux/stddef.h>
+
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/buffer_impl.h>
-- 
2.54.0

[PATCH 3/3] iio: common: st_sensors: fix includes with IWYU

[Caio Morais]

From: Caio Morais <caiomorais@usp.br>

Signed-off-by: Caio Morais <caiomorais@usp.br>
---
 drivers/iio/common/st_sensors/st_sensors_i2c.c | 7 +++++--
 drivers/iio/common/st_sensors/st_sensors_spi.c | 9 +++++++--
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/common/st_sensors/st_sensors_i2c.c b/drivers/iio/common/st_sensors/st_sensors_i2c.c
index 7156302fe..04d106def 100644
--- a/drivers/iio/common/st_sensors/st_sensors_i2c.c
+++ b/drivers/iio/common/st_sensors/st_sensors_i2c.c
@@ -7,12 +7,15 @@
  * Denis Ciocca <denis.ciocca@st.com>
  */
 
+#include <linux/device.h>
+#include <linux/err.h>
 #include <linux/i2c.h>
-#include <linux/kernel.h>
+#include <linux/linkage.h>
 #include <linux/module.h>
-#include <linux/iio/iio.h>
 #include <linux/regmap.h>
 
+#include <linux/iio/iio.h>
+
 #include <linux/iio/common/st_sensors_i2c.h>
 
 #define ST_SENSORS_I2C_MULTIREAD	0x80
diff --git a/drivers/iio/common/st_sensors/st_sensors_spi.c b/drivers/iio/common/st_sensors/st_sensors_spi.c
index 0da270139..884077d51 100644
--- a/drivers/iio/common/st_sensors/st_sensors_spi.c
+++ b/drivers/iio/common/st_sensors/st_sensors_spi.c
@@ -7,12 +7,17 @@
  * Denis Ciocca <denis.ciocca@st.com>
  */
 
-#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/linkage.h>
 #include <linux/module.h>
-#include <linux/iio/iio.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/spi/spi.h>
+#include <linux/stddef.h>
+#include <linux/types.h>
+
+#include <linux/iio/iio.h>
 
 #include <linux/iio/common/st_sensors_spi.h>
 
-- 
2.54.0

Re: [PATCH 1/3] iio: adc: xilinx-xadc: remove unnecessary includes and add missing ones

[Joshua Crofts]

On Sun, 26 Apr 2026 at 23:20, Caio Morais <caiomorais@usp.br> wrote:
>
> From: Caio Morais <caiomorais@usp.br>
>
> Signed-off-by: Caio Morais <caiomorais@usp.br>
> ---

You're missing the commit message body. While it's understandable
what changes you've done in this patch, it's good to expand the idea
further (what you did, how you did it, why you did it). This goes for all
of the patches in your series.

> +#include <linux/bitmap.h>
> +#include <linux/errno.h>
> +#include <linux/mutex.h>
> +#include <linux/types.h>
> +
>  #include <linux/iio/events.h>
>  #include <linux/iio/iio.h>
> -#include <linux/kernel.h>
>
>  #include "xilinx-xadc.h"
>
> --
> 2.54.0
>
>

Re: [PATCH 1/3] iio: adc: xilinx-xadc: remove unnecessary includes and add missing ones

[Andy Shevchenko]

On Mon, Apr 27, 2026 at 08:42:55AM +0200, Joshua Crofts wrote:
> On Sun, 26 Apr 2026 at 23:20, Caio Morais <caiomorais@usp.br> wrote:
> >
> > Signed-off-by: Caio Morais <caiomorais@usp.br>
> > ---
> 
> You're missing the commit message body. While it's understandable
> what changes you've done in this patch, it's good to expand the idea
> further (what you did, how you did it, why you did it). This goes for all
> of the patches in your series.

Dunno if it's your first review (congrats in that case!), but I fully agree with.
We do not accept patches with the empty commit message bodies.
(*Yes, it used to be okay twenty ears ago, but now.)


-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH 2/3] iio: buffer: industrialio-triggered-buffer: fix includes with IWYU

[Andy Shevchenko]

On Sun, Apr 26, 2026 at 06:18:01PM -0300, Caio Morais wrote:

...

> -#include <linux/kernel.h>
> -#include <linux/export.h>
> +#include <linux/errno.h>

> +#include <linux/linkage.h>

Hmm... This one rarely appears in the drivers. What do we get from it here?

>  #include <linux/module.h>
> +#include <linux/stddef.h>

This one for NULL, for example, which is fine.

-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH 1/3] iio: adc: xilinx-xadc: remove unnecessary includes and add missing ones

[Joshua Crofts]

On Mon, 27 Apr 2026 at 11:50, Andy Shevchenko
<andriy.shevchenko@intel.com> wrote:

> Dunno if it's your first review (congrats in that case!), but I fully agree with.

Yes, this is my first review :)

> We do not accept patches with the empty commit message bodies.
> (*Yes, it used to be okay twenty ears ago, but now.)

I maybe also take issue with the fact that the series (although they are
the same logical change) is composed of changes in different iio
subsystems (adc, buffer and common). Shouldn't these be sent
separately?

-- 
Kind regards

CJD

Re: [PATCH v2 0/3]: fix unnecessary includes and add missing ones across multiple drivers

[Jonathan Cameron]

On Sun, 26 Apr 2026 18:17:59 -0300
Caio Morais <caiomorais@usp.br> wrote:

> From: Caio Morais <caiomorais@usp.br>
> 
> This series removes unnecessary includes and adds missing ones as reported
> by the include-what-you-use (IWYU) tool across different IIO drivers.

One series per driver.  Having a shared one for the core is fine but definitely
don't mix core and drivers. Tend to have entirely different sets of
reviewers!

J
> 
> Caio Morais (3):
>   iio: adc: xilinx-xadc: remove unnecessary includes and add missing
>     ones
>   iio: buffer: industrialio-triggered-buffer: fix includes with IWYU
>   iio: common: st_sensors: fix includes with IWYU
> 
>  drivers/iio/adc/xilinx-xadc-events.c               | 6 +++++-
>  drivers/iio/buffer/industrialio-triggered-buffer.c | 6 ++++--
>  drivers/iio/common/st_sensors/st_sensors_i2c.c     | 7 +++++--
>  drivers/iio/common/st_sensors/st_sensors_spi.c     | 9 +++++++--
>  4 files changed, 21 insertions(+), 7 deletions(-)
> 

Re: [PATCH 1/3] iio: adc: xilinx-xadc: remove unnecessary includes and add missing ones

[Jonathan Cameron]

On Mon, 27 Apr 2026 08:42:55 +0200
Joshua Crofts <joshua.crofts1@gmail.com> wrote:

> On Sun, 26 Apr 2026 at 23:20, Caio Morais <caiomorais@usp.br> wrote:
> >
> > From: Caio Morais <caiomorais@usp.br>
> >
> > Signed-off-by: Caio Morais <caiomorais@usp.br>
> > ---  
> 
> You're missing the commit message body. While it's understandable
> what changes you've done in this patch, it's good to expand the idea
> further (what you did, how you did it, why you did it). This goes for all
> of the patches in your series.

Also, why only this file of the several that make up that driver?
Looks like kernel.h is included in xilinx-xadc-core.c as well.

I'd talk about kernel.h specifically in the patch description and
why stopping including that is seen as a nice to have.

> 
> > +#include <linux/bitmap.h>
> > +#include <linux/errno.h>
> > +#include <linux/mutex.h>
> > +#include <linux/types.h>
> > +
> >  #include <linux/iio/events.h>
> >  #include <linux/iio/iio.h>
> > -#include <linux/kernel.h>
> >
> >  #include "xilinx-xadc.h"
> >
> > --
> > 2.54.0
> >
> >  

Re: [PATCH 2/3] iio: buffer: industrialio-triggered-buffer: fix includes with IWYU

[Jonathan Cameron]

On Sun, 26 Apr 2026 18:18:01 -0300
Caio Morais <caiomorais@usp.br> wrote:

> From: Caio Morais <caiomorais@usp.br>
> 
> Signed-off-by: Caio Morais <caiomorais@usp.br>
> ---
>  drivers/iio/buffer/industrialio-triggered-buffer.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/buffer/industrialio-triggered-buffer.c b/drivers/iio/buffer/industrialio-triggered-buffer.c
> index 9bf75dee7..a91d439d7 100644
> --- a/drivers/iio/buffer/industrialio-triggered-buffer.c
> +++ b/drivers/iio/buffer/industrialio-triggered-buffer.c
> @@ -4,9 +4,11 @@
>   *  Author: Lars-Peter Clausen <lars@metafoo.de>
>   */
>  
> -#include <linux/kernel.h>
> -#include <linux/export.h>

Why?  There are numerous uses of EXPORT_SYMBOL() in this file.

> +#include <linux/errno.h>
> +#include <linux/linkage.h>

Wow. That one is obscure.  What needed that?  

For these, IWYU patches, I prefer to add that info after the ---
so it's easy to review them without opening the code up to take a closer look.

>  #include <linux/module.h>
> +#include <linux/stddef.h>
> +
>  #include <linux/iio/iio.h>
>  #include <linux/iio/buffer.h>
>  #include <linux/iio/buffer_impl.h>

Re: [PATCH 3/3] iio: common: st_sensors: fix includes with IWYU

[Jonathan Cameron]

On Sun, 26 Apr 2026 18:18:02 -0300
Caio Morais <caiomorais@usp.br> wrote:

> From: Caio Morais <caiomorais@usp.br>
> 
> Signed-off-by: Caio Morais <caiomorais@usp.br>
> ---
>  drivers/iio/common/st_sensors/st_sensors_i2c.c | 7 +++++--
>  drivers/iio/common/st_sensors/st_sensors_spi.c | 9 +++++++--
>  2 files changed, 12 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/iio/common/st_sensors/st_sensors_i2c.c b/drivers/iio/common/st_sensors/st_sensors_i2c.c
> index 7156302fe..04d106def 100644
> --- a/drivers/iio/common/st_sensors/st_sensors_i2c.c
> +++ b/drivers/iio/common/st_sensors/st_sensors_i2c.c
> @@ -7,12 +7,15 @@
>   * Denis Ciocca <denis.ciocca@st.com>
>   */
>  
> +#include <linux/device.h>
> +#include <linux/err.h>
>  #include <linux/i2c.h>
> -#include <linux/kernel.h>
> +#include <linux/linkage.h>
>  #include <linux/module.h>
> -#include <linux/iio/iio.h>
>  #include <linux/regmap.h>
>  
> +#include <linux/iio/iio.h>
> +
>  #include <linux/iio/common/st_sensors_i2c.h>
>  
>  #define ST_SENSORS_I2C_MULTIREAD	0x80
> diff --git a/drivers/iio/common/st_sensors/st_sensors_spi.c b/drivers/iio/common/st_sensors/st_sensors_spi.c
> index 0da270139..884077d51 100644
> --- a/drivers/iio/common/st_sensors/st_sensors_spi.c
> +++ b/drivers/iio/common/st_sensors/st_sensors_spi.c
> @@ -7,12 +7,17 @@
>   * Denis Ciocca <denis.ciocca@st.com>
>   */
>  
> -#include <linux/kernel.h>
> +#include <linux/device.h>
This one is similar to kernel.h in that it's mostly a catch all header
that we prefer to replace if possible with more specific ones.

Now the driver might directly dereference a struct device, but if
so that normally indicates something we should clean up.
Maybe it's something else.  As mentioned in previous review
providing that info under the --- in the patch can save time on
questions like this.

> +#include <linux/err.h>
> +#include <linux/linkage.h>
>  #include <linux/module.h>
> -#include <linux/iio/iio.h>
>  #include <linux/property.h>
>  #include <linux/regmap.h>
>  #include <linux/spi/spi.h>
> +#include <linux/stddef.h>
> +#include <linux/types.h>
> +
> +#include <linux/iio/iio.h>
>  
>  #include <linux/iio/common/st_sensors_spi.h>
>