linux-kernel - [PATCH v2 1/3] iio: pressure: bmp280: Use uint8 to store chip ids

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Message-ID: <cf08dd2fab1fd91ca7ed0724d1f50435c8c2914b.1692805377.git.ang.iglesiasg@gmail.com>
Date:   Wed, 23 Aug 2023 17:58:05 +0200
From:   Angel Iglesias <ang.iglesiasg@...il.com>
To:     linux-iio@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Angel Iglesias <ang.iglesiasg@...il.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v2 1/3] iio: pressure: bmp280: Use uint8 to store chip ids

Represent the device id reg values using uint8 to optimize memory use.

Signed-off-by: Angel Iglesias <ang.iglesiasg@...il.com>

diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h
index 5c0563ce7572..ff72e82f55ad 100644
--- a/drivers/iio/pressure/bmp280.h
+++ b/drivers/iio/pressure/bmp280.h
@@ -418,7 +418,7 @@ struct bmp280_data {
 
 struct bmp280_chip_info {
 	unsigned int id_reg;
-	const unsigned int chip_id;
+	uint8_t chip_id;
 
 	const struct regmap_config *regmap_config;
 
-- 
2.42.0