Re: [PATCH v2 0/3] staging: iio: replace sprintf() with sysfs_emit()

[Jonathan Cameron <jic23@kernel.org>]

On Fri, 20 Mar 2026 22:24:21 +0000
Gabriel Rondon <grondon@gmail.com> wrote:

> Replace the remaining sprintf() calls with sysfs_emit() in sysfs
> show functions across three staging IIO drivers: ad7816, ad5933, and
> ad9834.
> 
> sysfs_emit() is the preferred API for sysfs callbacks as it is aware
> of the PAGE_SIZE buffer limit. Build tested with gcc 13.3.
> 
Firstly a process thing. Don't send a v2 in reply to a v1. It should
be a new email thread.  I'm not sure where this style is coming from
as I've never encountered any kernel subsystem who ask for it.

The basic reason is threads get very confusing if they mix versions +
a more practical one is that your email appears a bunch of screens up
in the email client and many reviewers (who don't have time to look at
everything) start with most recent emails when looking for things to
review.  Thus you get ignored.

Jonathan

> Changes since v1:
> - ad5933: remove unnecessary (int) cast in ad5933_show_frequency()
>   and use %llu format specifier for unsigned long long (Andy Shevchenko)
> - ad9834: simplify wavetype_available show functions by removing
>   intermediate string variable and returning directly (Andy Shevchenko)
> 
> Gabriel Rondon (3):
>   staging: iio: ad7816: use sysfs_emit() in show functions
>   staging: iio: ad5933: use sysfs_emit() in show functions
>   staging: iio: ad9834: use sysfs_emit() and simplify show functions
> 
>  drivers/staging/iio/adc/ad7816.c              | 16 ++++++-------
>  drivers/staging/iio/frequency/ad9834.c        | 20 +++++-----------
>  .../staging/iio/impedance-analyzer/ad5933.c   | 24 +++++++++----------
>  3 files changed, 26 insertions(+), 34 deletions(-)
>