linux-kernel - [PATCH v3 09/10] iio: at91-sama5d2_adc: Use IIO_STATIC_CONST_DEVICE

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Date:   Mon, 3 Oct 2022 11:13:31 +0300
From:   Matti Vaittinen <mazziesaccount@...il.com>
To:     Matti Vaittinen <mazziesaccount@...il.com>,
        Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Cc:     Eugen Hristev <eugen.hristev@...rochip.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v3 09/10] iio: at91-sama5d2_adc: Use
 IIO_STATIC_CONST_DEVICE_ATTR()

Slightly simplify by dropping open-coded constant data iio_dev_attr
functions and using the IIO_STATIC_CONST_DEVICE_ATTR() instead.

Signed-off-by: Matti Vaittinen <mazziesaccount@...il.com>
---
 drivers/iio/adc/at91-sama5d2_adc.c | 19 +++----------------
 1 file changed, 3 insertions(+), 16 deletions(-)

diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index 6e3f9fa93cee..dca014d1108f 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -1841,26 +1841,13 @@ static ssize_t at91_adc_get_watermark(struct device *dev,
 	return scnprintf(buf, PAGE_SIZE, "%d\n", st->dma_st.watermark);
 }
 
-static ssize_t hwfifo_watermark_min_show(struct device *dev,
-					 struct device_attribute *attr,
-					 char *buf)
-{
-	return sysfs_emit(buf, "%s\n", "2");
-}
-
-static ssize_t hwfifo_watermark_max_show(struct device *dev,
-					 struct device_attribute *attr,
-					 char *buf)
-{
-	return sysfs_emit(buf, "%s\n", AT91_HWFIFO_MAX_SIZE_STR);
-}
-
 static IIO_DEVICE_ATTR(hwfifo_enabled, 0444,
 		       at91_adc_get_fifo_state, NULL, 0);
 static IIO_DEVICE_ATTR(hwfifo_watermark, 0444,
 		       at91_adc_get_watermark, NULL, 0);
-static IIO_DEVICE_ATTR_RO(hwfifo_watermark_min, 0);
-static IIO_DEVICE_ATTR_RO(hwfifo_watermark_max, 0);
+
+IIO_STATIC_CONST_DEVICE_ATTR(hwfifo_watermark_min, "2");
+IIO_STATIC_CONST_DEVICE_ATTR(hwfifo_watermark_max, AT91_HWFIFO_MAX_SIZE_STR);
 
 static IIO_CONST_ATTR(oversampling_ratio_available,
 		      __stringify(AT91_OSR_1SAMPLES) " "
-- 
2.37.3


-- 
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND

~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =] 

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