linux-kernel - [PATCH] RTC: more XSTP/VDET support for rtc-rs5c348 driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 04 Sep 2006 22:22:22 +0900 (JST)
From:	Atsushi Nemoto <anemo@....ocn.ne.jp>
To:	linux-kernel@...r.kernel.org
Cc:	a.zummo@...ertech.it, akpm@...l.org
Subject: [PATCH] RTC: more XSTP/VDET support for rtc-rs5c348 driver

If the chip detected "oscillator stop" condition, show an warning
message.  And initialize it with the Epoch time instead of leaving it
with unknown date/time.

Signed-off-by: Atsushi Nemoto <anemo@....ocn.ne.jp>

diff --git a/drivers/rtc/rtc-rs5c348.c b/drivers/rtc/rtc-rs5c348.c
index 0964d1d..2558906 100644
--- a/drivers/rtc/rtc-rs5c348.c
+++ b/drivers/rtc/rtc-rs5c348.c
@@ -23,7 +23,7 @@ #include <linux/rtc.h>
 #include <linux/workqueue.h>
 #include <linux/spi/spi.h>
 
-#define DRV_VERSION "0.1"
+#define DRV_VERSION "0.2"
 
 #define RS5C348_REG_SECS	0
 #define RS5C348_REG_MINS	1
@@ -175,8 +175,15 @@ static int __devinit rs5c348_probe(struc
 		goto kfree_exit;
 	if (ret & (RS5C348_BIT_XSTP | RS5C348_BIT_VDET)) {
 		u8 buf[2];
+		struct rtc_time tm;
 		if (ret & RS5C348_BIT_VDET)
 			dev_warn(&spi->dev, "voltage-low detected.\n");
+		if (ret & RS5C348_BIT_XSTP)
+			dev_warn(&spi->dev, "oscillator-stop detected.\n");
+		rtc_time_to_tm(0, &tm);	/* 1970/1/1 */
+		ret = rs5c348_rtc_set_time(&spi->dev, &tm);
+		if (ret < 0)
+			goto kfree_exit;
 		buf[0] = RS5C348_CMD_W(RS5C348_REG_CTL2);
 		buf[1] = 0;
 		ret = spi_write_then_read(spi, buf, sizeof(buf), NULL, 0);
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/