linux-kernel - [PATCH 14/18] rtc: sd3078: drop needless struct sd3078::rtc member

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Message-Id: <20250228-rtc-cleanups-v1-14-b44cec078481@linaro.org>
Date: Fri, 28 Feb 2025 14:07:27 +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 14/18] rtc: sd3078: drop needless struct sd3078::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-sd3078.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/rtc/rtc-sd3078.c b/drivers/rtc/rtc-sd3078.c
index fe27b54beaad1c06b70bf7f22e44c3f6da087267..ebb4d45ce2409982880affbc7a85d5e7410c8f42 100644
--- a/drivers/rtc/rtc-sd3078.c
+++ b/drivers/rtc/rtc-sd3078.c
@@ -37,7 +37,6 @@
 #define WRITE_PROTECT_EN	0
 
 struct sd3078 {
-	struct rtc_device	*rtc;
 	struct regmap		*regmap;
 };
 
@@ -167,6 +166,7 @@ static int sd3078_probe(struct i2c_client *client)
 {
 	int ret;
 	struct sd3078 *sd3078;
+	struct rtc_device *rtc;
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
 		return -ENODEV;
@@ -183,15 +183,15 @@ static int sd3078_probe(struct i2c_client *client)
 
 	i2c_set_clientdata(client, sd3078);
 
-	sd3078->rtc = devm_rtc_allocate_device(&client->dev);
-	if (IS_ERR(sd3078->rtc))
-		return PTR_ERR(sd3078->rtc);
+	rtc = devm_rtc_allocate_device(&client->dev);
+	if (IS_ERR(rtc))
+		return PTR_ERR(rtc);
 
-	sd3078->rtc->ops = &sd3078_rtc_ops;
-	sd3078->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
-	sd3078->rtc->range_max = RTC_TIMESTAMP_END_2099;
+	rtc->ops = &sd3078_rtc_ops;
+	rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
+	rtc->range_max = RTC_TIMESTAMP_END_2099;
 
-	ret = devm_rtc_register_device(sd3078->rtc);
+	ret = devm_rtc_register_device(rtc);
 	if (ret)
 		return ret;
 

-- 
2.48.1.711.g2feabab25a-goog