From: David Lechner <dlechner@baylibre.com>
To: Jonathan Cameron <jic23@kernel.org>
Cc: "David Lechner" <dlechner@baylibre.com>,
"Michael Hennerich" <michael.hennerich@analog.com>,
"Nuno Sá" <nuno.sa@analog.com>,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
"Andy Shevchenko" <andy.shevchenko@gmail.com>
Subject: [PATCH v3] iio: adc: ad7944: simplify adi,spi-mode property parsing
Date: Mon, 25 Mar 2024 14:40:36 -0500 [thread overview]
Message-ID: <20240325-ad7944-cleanups-v3-1-3a19120cdd06@baylibre.com> (raw)
This simplifies the adi,spi-mode property parsing by using
device_property_match_property_string() instead of two separate
functions. Also, the error return value is now more informative
in cases where there was a problem parsing the property.
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
---
Changes in v3:
- Fix "a problem" in commit message.
- Remove nested if to save a few lines.
- Link to v2: https://lore.kernel.org/r/20240319-ad7944-cleanups-v2-1-50e77269351b@baylibre.com
Changes in v2:
- Reorder error path to avoid else statement
- Link to v1: https://lore.kernel.org/r/20240318-ad7944-cleanups-v1-1-0cbb0349a14f@baylibre.com
---
drivers/iio/adc/ad7944.c | 21 ++++++++++-----------
1 file changed, 10 insertions(+), 11 deletions(-)
diff --git a/drivers/iio/adc/ad7944.c b/drivers/iio/adc/ad7944.c
index d5ec6b5a41c7..9aa3e98cd75c 100644
--- a/drivers/iio/adc/ad7944.c
+++ b/drivers/iio/adc/ad7944.c
@@ -366,7 +366,6 @@ static int ad7944_probe(struct spi_device *spi)
struct ad7944_adc *adc;
bool have_refin = false;
struct regulator *ref;
- const char *str_val;
int ret;
indio_dev = devm_iio_device_alloc(dev, sizeof(*adc));
@@ -382,17 +381,17 @@ static int ad7944_probe(struct spi_device *spi)
adc->timing_spec = chip_info->timing_spec;
- if (device_property_read_string(dev, "adi,spi-mode", &str_val) == 0) {
- ret = sysfs_match_string(ad7944_spi_modes, str_val);
- if (ret < 0)
- return dev_err_probe(dev, -EINVAL,
- "unsupported adi,spi-mode\n");
-
- adc->spi_mode = ret;
- } else {
- /* absence of adi,spi-mode property means default mode */
+ ret = device_property_match_property_string(dev, "adi,spi-mode",
+ ad7944_spi_modes,
+ ARRAY_SIZE(ad7944_spi_modes));
+ /* absence of adi,spi-mode property means default mode */
+ if (ret == -EINVAL)
adc->spi_mode = AD7944_SPI_MODE_DEFAULT;
- }
+ else if (ret < 0)
+ return dev_err_probe(dev, ret,
+ "getting adi,spi-mode property failed\n");
+ else
+ adc->spi_mode = ret;
if (adc->spi_mode == AD7944_SPI_MODE_CHAIN)
return dev_err_probe(dev, -EINVAL,
---
base-commit: 1446d8ef48196409f811c25071b2cc510a49fc60
change-id: 20240318-ad7944-cleanups-9f95a7c598b6
next reply other threads:[~2024-03-25 19:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-25 19:40 David Lechner [this message]
2024-03-28 13:23 ` [PATCH v3] iio: adc: ad7944: simplify adi,spi-mode property parsing Jonathan Cameron
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240325-ad7944-cleanups-v3-1-3a19120cdd06@baylibre.com \
--to=dlechner@baylibre.com \
--cc=andy.shevchenko@gmail.com \
--cc=jic23@kernel.org \
--cc=linux-iio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=michael.hennerich@analog.com \
--cc=nuno.sa@analog.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).