add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/rtc/rtc-ds1305.c
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@@ -1,12 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * rtc-ds1305.c -- driver for DS1305 and DS1306 SPI RTC chips
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  *
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  * Copyright (C) 2008 David Brownell
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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  */
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 #include <linux/kernel.h>
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 #include <linux/init.h>
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@@ -329,17 +325,13 @@
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 	u8		buf[1 + DS1305_ALM_LEN];
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 	/* convert desired alarm to time_t */
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-	status = rtc_tm_to_time(&alm->time, &later);
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-	if (status < 0)
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-		return status;
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+	later = rtc_tm_to_time64(&alm->time);
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 	/* Read current time as time_t */
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 	status = ds1305_get_time(dev, &tm);
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 	if (status < 0)
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 		return status;
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-	status = rtc_tm_to_time(&tm, &now);
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-	if (status < 0)
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-		return status;
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+	now = rtc_tm_to_time64(&tm);
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 	/* make sure alarm fires within the next 24 hours */
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 	if (later <= now)
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@@ -694,19 +686,18 @@
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 	/* register RTC ... from here on, ds1305->ctrl needs locking */
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 	ds1305->rtc = devm_rtc_allocate_device(&spi->dev);
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-	if (IS_ERR(ds1305->rtc)) {
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+	if (IS_ERR(ds1305->rtc))
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 		return PTR_ERR(ds1305->rtc);
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-	}
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 	ds1305->rtc->ops = &ds1305_ops;
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+	ds1305->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
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+	ds1305->rtc->range_max = RTC_TIMESTAMP_END_2099;
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 	ds1305_nvmem_cfg.priv = ds1305;
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 	ds1305->rtc->nvram_old_abi = true;
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 	status = rtc_register_device(ds1305->rtc);
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-	if (status) {
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-		dev_dbg(&spi->dev, "register rtc --> %d\n", status);
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+	if (status)
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 		return status;
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-	}
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 	rtc_nvmem_register(ds1305->rtc, &ds1305_nvmem_cfg);
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