rtc: ep93xx: drop needless struct ep93xx_rtc::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@linaro.org>
Link: https://lore.kernel.org/r/20250304-rtc-cleanups-v2-5-d4689a71668c@linaro.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c
index 1fdd20d01560ef4fae2b996cf366b4f812329225..dcdcdd06f30d1ff6d0939f6bcad2c17c03c5a65e 100644 (file)
--- a/drivers/rtc/rtc-ep93xx.c
+++ b/drivers/rtc/rtc-ep93xx.c
@@ -28,7 +28,6 @@
 
 struct ep93xx_rtc {
        void __iomem    *mmio_base;
-       struct rtc_device *rtc;
 };
 
 static int ep93xx_rtc_get_swcomp(struct device *dev, unsigned short *preload,
@@ -123,6 +122,7 @@ static const struct attribute_group ep93xx_rtc_sysfs_files = {
 static int ep93xx_rtc_probe(struct platform_device *pdev)
 {
        struct ep93xx_rtc *ep93xx_rtc;
+       struct rtc_device *rtc;
        int err;
 
        ep93xx_rtc = devm_kzalloc(&pdev->dev, sizeof(*ep93xx_rtc), GFP_KERNEL);
@@ -135,18 +135,18 @@ static int ep93xx_rtc_probe(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, ep93xx_rtc);
 
-       ep93xx_rtc->rtc = devm_rtc_allocate_device(&pdev->dev);
-       if (IS_ERR(ep93xx_rtc->rtc))
-               return PTR_ERR(ep93xx_rtc->rtc);
+       rtc = devm_rtc_allocate_device(&pdev->dev);
+       if (IS_ERR(rtc))
+               return PTR_ERR(rtc);
 
-       ep93xx_rtc->rtc->ops = &ep93xx_rtc_ops;
-       ep93xx_rtc->rtc->range_max = U32_MAX;
+       rtc->ops = &ep93xx_rtc_ops;
+       rtc->range_max = U32_MAX;
 
-       err = rtc_add_group(ep93xx_rtc->rtc, &ep93xx_rtc_sysfs_files);
+       err = rtc_add_group(rtc, &ep93xx_rtc_sysfs_files);
        if (err)
                return err;
 
-       return devm_rtc_register_device(ep93xx_rtc->rtc);
+       return devm_rtc_register_device(rtc);
 }
 
 static const struct of_device_id ep93xx_rtc_of_ids[] = {