[PATCH 1/2] rtc: s3c: stop setting bogus time

It doesn't make sense to set the RTC to a default value at probe time. Let
the core handle invalid date and time.

Also, this is basically dead code since commit 22652ba72453 ("rtc: stop
validating rtc_time in .read_time")

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
 drivers/rtc/rtc-s3c.c | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index fab326ba9cec..f07b0c43aafe 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c

@@ -382,7 +382,6 @@ static int s3c_rtc_remove(struct platform_device *pdev)
 static int s3c_rtc_probe(struct platform_device *pdev)
 {
 	struct s3c_rtc *info = NULL;
-	struct rtc_time rtc_tm;
 	int ret;
 
 	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);

@@ -448,20 +447,6 @@ static int s3c_rtc_probe(struct platform_device *pdev)
 
 	device_init_wakeup(&pdev->dev, 1);
 
-	/* Check RTC Time */
-	if (s3c_rtc_gettime(&pdev->dev, &rtc_tm)) {
-		rtc_tm.tm_year	= 100;
-		rtc_tm.tm_mon	= 0;
-		rtc_tm.tm_mday	= 1;
-		rtc_tm.tm_hour	= 0;
-		rtc_tm.tm_min	= 0;
-		rtc_tm.tm_sec	= 0;
-
-		s3c_rtc_settime(&pdev->dev, &rtc_tm);
-
-		dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n");
-	}
-
 	/* register RTC and exit */
 	info->rtc = devm_rtc_device_register(&pdev->dev, "s3c", &s3c_rtcops,
 					     THIS_MODULE);

-- 
2.29.2

When CONFIG_OF is disabled then the matching table is not referenced.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
 drivers/rtc/rtc-s3c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index f07b0c43aafe..e57d3ca70a78 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c

@@ -558,7 +558,7 @@ static struct s3c_rtc_data const s3c6410_rtc_data = {
 	.disable		= s3c6410_rtc_disable,
 };
 
-static const struct of_device_id s3c_rtc_dt_match[] = {
+static const __maybe_unused struct of_device_id s3c_rtc_dt_match[] = {
 	{
 		.compatible = "samsung,s3c2410-rtc",
 		.data = &s3c2410_rtc_data,

-- 
2.29.2

On Tue, Feb 02, 2021 at 12:29:33PM +0100, Alexandre Belloni wrote:

It doesn't make sense to set the RTC to a default value at probe time. Let
the core handle invalid date and time.

Also, this is basically dead code since commit 22652ba72453 ("rtc: stop
validating rtc_time in .read_time")

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
 drivers/rtc/rtc-s3c.c | 15 ---------------
 1 file changed, 15 deletions(-)

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>

Best regards,
Krzysztof

On Tue, Feb 02, 2021 at 12:29:34PM +0100, Alexandre Belloni wrote:

When CONFIG_OF is disabled then the matching table is not referenced.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
 drivers/rtc/rtc-s3c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>

Best regards,
Krzysztof