[PATCH v2 04/16] rtc: ds2404: drop needless struct ds2404::rtc member

[André Draszik]

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@xxxxxxxxxx>
---
 drivers/rtc/rtc-ds2404.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/rtc/rtc-ds2404.c b/drivers/rtc/rtc-ds2404.c
index 3231fd9f61da49bdaf00e46486fc34836094ee78..217694eca36c3432a8db3b874374e347eeb802d9 100644
--- a/drivers/rtc/rtc-ds2404.c
+++ b/drivers/rtc/rtc-ds2404.c
@@ -31,7 +31,6 @@ struct ds2404 {
 	struct gpio_desc *rst_gpiod;
 	struct gpio_desc *clk_gpiod;
 	struct gpio_desc *dq_gpiod;
-	struct rtc_device *rtc;
 };
 
 static int ds2404_gpio_map(struct ds2404 *chip, struct platform_device *pdev)
@@ -182,6 +181,7 @@ static const struct rtc_class_ops ds2404_rtc_ops = {
 static int rtc_probe(struct platform_device *pdev)
 {
 	struct ds2404 *chip;
+	struct rtc_device *rtc;
 	int retval = -EBUSY;
 
 	chip = devm_kzalloc(&pdev->dev, sizeof(struct ds2404), GFP_KERNEL);
@@ -190,9 +190,9 @@ static int rtc_probe(struct platform_device *pdev)
 
 	chip->dev = &pdev->dev;
 
-	chip->rtc = devm_rtc_allocate_device(&pdev->dev);
-	if (IS_ERR(chip->rtc))
-		return PTR_ERR(chip->rtc);
+	rtc = devm_rtc_allocate_device(&pdev->dev);
+	if (IS_ERR(rtc))
+		return PTR_ERR(rtc);
 
 	retval = ds2404_gpio_map(chip, pdev);
 	if (retval)
@@ -200,10 +200,10 @@ static int rtc_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, chip);
 
-	chip->rtc->ops = &ds2404_rtc_ops;
-	chip->rtc->range_max = U32_MAX;
+	rtc->ops = &ds2404_rtc_ops;
+	rtc->range_max = U32_MAX;
 
-	retval = devm_rtc_register_device(chip->rtc);
+	retval = devm_rtc_register_device(rtc);
 	if (retval)
 		return retval;
 

-- 
2.48.1.711.g2feabab25a-goog