linux-kernel - [PATCH 11/18] rtc: rx8581: drop needless struct rx8581::rtc member

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Message-Id: <20250228-rtc-cleanups-v1-11-b44cec078481@linaro.org>
Date: Fri, 28 Feb 2025 14:07:24 +0000
From: André Draszik <andre.draszik@...aro.org>
To: Chanwoo Choi <cw00.choi@...sung.com>, 
 Krzysztof Kozlowski <krzk@...nel.org>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Joel Stanley <joel@....id.au>, Andrew Jeffery <andrew@...econstruct.com.au>, 
 Hans Ulli Kroll <ulli.kroll@...glemail.com>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>, 
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>, 
 Tóth János <gomba007@...il.com>, 
 Dianlong Li <long17.cool@....com>
Cc: linux-kernel@...r.kernel.org, linux-rtc@...r.kernel.org, 
 linux-samsung-soc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-aspeed@...ts.ozlabs.org, linux-amlogic@...ts.infradead.org, 
 André Draszik <andre.draszik@...aro.org>
Subject: [PATCH 11/18] rtc: rx8581: drop needless struct rx8581::rtc member

The memory pointed to by the ::rtc member is managed via devres, and
no code in this driver uses it past _probe().

We can drop it from the structure and just use a local temporary
variable, reducing runtime memory consumption by a few bytes.

Signed-off-by: André Draszik <andre.draszik@...aro.org>
---
 drivers/rtc/rtc-rx8581.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/rtc/rtc-rx8581.c b/drivers/rtc/rtc-rx8581.c
index b18c12887bdc3705ea4cee9b8d75086a05b24e71..785ebaca07ac971eee34559f8d1e0a8a872cbba9 100644
--- a/drivers/rtc/rtc-rx8581.c
+++ b/drivers/rtc/rtc-rx8581.c
@@ -54,7 +54,6 @@
 
 struct rx8581 {
 	struct regmap		*regmap;
-	struct rtc_device	*rtc;
 };
 
 struct rx85x1_config {
@@ -252,6 +251,7 @@ static int rx8581_probe(struct i2c_client *client)
 	struct rx8581 *rx8581;
 	const struct rx85x1_config *config = &rx8581_config;
 	const void *data = of_device_get_match_data(&client->dev);
+	struct rtc_device *rtc;
 	static struct nvmem_config nvmem_cfg[] = {
 		{
 			.name = "rx85x1-",
@@ -286,21 +286,21 @@ static int rx8581_probe(struct i2c_client *client)
 	if (IS_ERR(rx8581->regmap))
 		return PTR_ERR(rx8581->regmap);
 
-	rx8581->rtc = devm_rtc_allocate_device(&client->dev);
-	if (IS_ERR(rx8581->rtc))
-		return PTR_ERR(rx8581->rtc);
+	rtc = devm_rtc_allocate_device(&client->dev);
+	if (IS_ERR(rtc))
+		return PTR_ERR(rtc);
 
-	rx8581->rtc->ops = &rx8581_rtc_ops;
-	rx8581->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
-	rx8581->rtc->range_max = RTC_TIMESTAMP_END_2099;
-	rx8581->rtc->start_secs = 0;
-	rx8581->rtc->set_start_time = true;
+	rtc->ops = &rx8581_rtc_ops;
+	rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
+	rtc->range_max = RTC_TIMESTAMP_END_2099;
+	rtc->start_secs = 0;
+	rtc->set_start_time = true;
 
-	ret = devm_rtc_register_device(rx8581->rtc);
+	ret = devm_rtc_register_device(rtc);
 
 	for (i = 0; i < config->num_nvram; i++) {
 		nvmem_cfg[i].priv = rx8581;
-		devm_rtc_nvmem_register(rx8581->rtc, &nvmem_cfg[i]);
+		devm_rtc_nvmem_register(rtc, &nvmem_cfg[i]);
 	}
 
 	return ret;

-- 
2.48.1.711.g2feabab25a-goog