Cleanup include headers by removing proxy kernel.h header and
unnecessary list.h, interrupt.h, workqueue.h and slab.h headers. Added
additional headers that were previously included from kernel.h.

Verified using the include-what-you-use tool.

Signed-off-by: Joshua Crofts <joshua.crofts1@gmail.com>
---
 drivers/staging/iio/frequency/ad9834.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/iio/frequency/ad9834.c b/drivers/staging/iio/frequency/ad9834.c
index d339d5e8e0..9b65fbe1c7 100644
--- a/drivers/staging/iio/frequency/ad9834.c
+++ b/drivers/staging/iio/frequency/ad9834.c
@@ -5,18 +5,21 @@
  * Copyright 2010-2011 Analog Devices Inc.
  */
 
+#include <linux/bits.h>
 #include <linux/clk.h>
-#include <linux/interrupt.h>
-#include <linux/workqueue.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/list.h>
-#include <linux/spi/spi.h>
-#include <linux/regulator/consumer.h>
+#include <linux/dev_printk.h>
 #include <linux/err.h>
+#include <linux/kstrtox.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <linux/string.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+
+#include <asm/byteorder.h>
 #include <asm/div64.h>
 
 #include <linux/iio/iio.h>
-- 
2.47.3

On Thu, Apr 16, 2026 at 09:32:40AM +0000, Joshua Crofts wrote:
> Cleanup include headers by removing proxy kernel.h header and
> unnecessary list.h, interrupt.h, workqueue.h and slab.h headers. Added
> additional headers that were previously included from kernel.h.
> 
> Verified using the include-what-you-use tool.

I'm wondering why in previous round the tool haven't noticed what I did...

...

> +#include <linux/bits.h>
>  #include <linux/clk.h>
> -#include <linux/interrupt.h>
> -#include <linux/workqueue.h>
> -#include <linux/device.h>
> -#include <linux/kernel.h>
> -#include <linux/slab.h>
> -#include <linux/sysfs.h>
> -#include <linux/list.h>
> -#include <linux/spi/spi.h>
> -#include <linux/regulator/consumer.h>
> +#include <linux/dev_printk.h>
>  #include <linux/err.h>
> +#include <linux/kstrtox.h>
> +#include <linux/mod_devicetable.h>
>  #include <linux/module.h>
> +#include <linux/mutex.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/spi/spi.h>

> +#include <linux/string.h>

Hmm... What's used for here?

> +#include <linux/sysfs.h>
> +#include <linux/types.h>
> +
> +#include <asm/byteorder.h>
>  #include <asm/div64.h>

-- 
With Best Regards,
Andy Shevchenko

On Fri, 17 Apr 2026 at 08:47, Andy Shevchenko
<andriy.shevchenko@intel.com> wrote:
> I'm wondering why in previous round the tool haven't noticed what I did...

Yeah, the tool is pretty noisy unfortunately, even with tweaking it's
not exactly 100%.

> > +#include <linux/string.h>
>
> Hmm... What's used for here?

sysfs_streq() is defined in linux/string.h.

-- 
Kind regards

CJD

On Fri, Apr 17, 2026 at 09:13:27AM +0200, Joshua Crofts wrote:
> On Fri, 17 Apr 2026 at 08:47, Andy Shevchenko
> <andriy.shevchenko@intel.com> wrote:
> > I'm wondering why in previous round the tool haven't noticed what I did...
> 
> Yeah, the tool is pretty noisy unfortunately, even with tweaking it's
> not exactly 100%.

Yes, that's why one still needs to understand more about headers in the Linux
kernel to do such a "simple" change.

> > > +#include <linux/string.h>
> >
> > Hmm... What's used for here?
> 
> sysfs_streq() is defined in linux/string.h.

Oh, surprise surprise :-), thanks for pointing this out!

-- 
With Best Regards,
Andy Shevchenko

On Fri, 17 Apr 2026 at 09:26, Andy Shevchenko
<andriy.shevchenko@intel.com> wrote:
> Yes, that's why one still needs to understand more about headers in the Linux
> kernel to do such a "simple" change.

Yup, it's definitely a task that seems easy on the surface level (but
isn't). Also the concept of
kernel.h is truly a fun one.

> Oh, surprise surprise :-), thanks for pointing this out!

No problem, surprisingly one of the things that IWYU got right.

-- 
Kind regards

CJD

On Fri, 17 Apr 2026 09:34:38 +0200
Joshua Crofts <joshua.crofts1@gmail.com> wrote:

> On Fri, 17 Apr 2026 at 09:26, Andy Shevchenko
> <andriy.shevchenko@intel.com> wrote:
> > Yes, that's why one still needs to understand more about headers in the Linux
> > kernel to do such a "simple" change.  
> 
> Yup, it's definitely a task that seems easy on the surface level (but
> isn't). Also the concept of
> kernel.h is truly a fun one.
> 
> > Oh, surprise surprise :-), thanks for pointing this out!  
> 
> No problem, surprisingly one of the things that IWYU got right.
> 
Looks fine to me.
Applied to the testing branch of iio.git

Thanks,

Jonathan