rtc: aspeed: drop needless struct aspeed_rtc::rtc_dev member

The memory pointed to by the ::rtc_dev 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@linaro.org>
Link: https://lore.kernel.org/r/20250304-rtc-cleanups-v2-3-d4689a71668c@linaro.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/rtc-aspeed.c b/drivers/rtc/rtc-aspeed.c
index 880b015eebaf796f68ed82c29998f345e1fd418b..0d0053b52f9b90a61725bf29435bfc8071977f9e 100644 (file)
--- a/drivers/rtc/rtc-aspeed.c
+++ b/drivers/rtc/rtc-aspeed.c
@@ -8,7 +8,6 @@
 #include <linux/io.h>
 
 struct aspeed_rtc {
-       struct rtc_device *rtc_dev;
        void __iomem *base;
 };
 
@@ -85,6 +84,7 @@ static const struct rtc_class_ops aspeed_rtc_ops = {
 static int aspeed_rtc_probe(struct platform_device *pdev)
 {
        struct aspeed_rtc *rtc;
+       struct rtc_device *rtc_dev;
 
        rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
        if (!rtc)
@@ -94,17 +94,17 @@ static int aspeed_rtc_probe(struct platform_device *pdev)
        if (IS_ERR(rtc->base))
                return PTR_ERR(rtc->base);
 
-       rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
-       if (IS_ERR(rtc->rtc_dev))
-               return PTR_ERR(rtc->rtc_dev);
+       rtc_dev = devm_rtc_allocate_device(&pdev->dev);
+       if (IS_ERR(rtc_dev))
+               return PTR_ERR(rtc_dev);
 
        platform_set_drvdata(pdev, rtc);
 
-       rtc->rtc_dev->ops = &aspeed_rtc_ops;
-       rtc->rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_1900;
-       rtc->rtc_dev->range_max = 38814989399LL; /* 3199-12-31 23:59:59 */
+       rtc_dev->ops = &aspeed_rtc_ops;
+       rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_1900;
+       rtc_dev->range_max = 38814989399LL; /* 3199-12-31 23:59:59 */
 
-       return devm_rtc_register_device(rtc->rtc_dev);
+       return devm_rtc_register_device(rtc_dev);
 }
 
 static const struct of_device_id aspeed_rtc_match[] = {