[PATCH 0/4] dev_printk: add dev_errp_probe() helper

[Nuno Sa <nuno.sa@analog.com>]

This series adds a dev_errp_probe() helper. This is similar to
dev_err_probe() but for cases where an ERR_PTR() is to be returned
simplifying patterns like:

	dev_err_probe(dev, ret, ...);
	return ERR_PTR(ret)

The other three patches are adding users for it. The main motivator for
this were the changes in the commit ("iio: temperature: ltc2983: convert
to dev_err_probe()"). Initially I just had a local helper [1] but then
it was suggested to try a new, common helper. As a result, I looked for
a couple more users.

I then move into dev_errp_probe() [2] but it was then suggested to separare
the patch series so we have onde dedicated for the printk helper.

[1]: https://lore.kernel.org/all/20240301-ltc2983-misc-improv-v3-1-c09516ac0efc@analog.com/
[2]: https://lore.kernel.org/all/20240328-ltc2983-misc-improv-v4-0-0cc428c07cd5@analog.com/

---
Nuno Sa (4):
      dev_printk: add new dev_errp_probe() helper
      iio: temperature: ltc2983: convert to dev_err_probe()
      iio: backend: make use of dev_errp_probe()
      iio: common: scmi_iio: convert to dev_err_probe()

 drivers/iio/common/scmi_sensors/scmi_iio.c |  45 +++--
 drivers/iio/industrialio-backend.c         |   8 +-
 drivers/iio/temperature/ltc2983.c          | 255 +++++++++++++----------------
 include/linux/dev_printk.h                 |   5 +
 4 files changed, 142 insertions(+), 171 deletions(-)
---
base-commit: 2b3d5988ae2cb5cd945ddbc653f0a71706231fdd
change-id: 20240404-dev-add_dev_errp_probe-69e7524c2803
--

Thanks!
- Nuno Sá