linux-kernel - Re: System automatically wakes up because of Intel Rapid Start Technology

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

Message-ID: <20141222145949.GB11844@srcf.ucam.org>
Date:	Mon, 22 Dec 2014 14:59:49 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Gabriele Mazzotta <gabriele.mzt@...il.com>
Cc:	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: System automatically wakes up because of Intel Rapid Start
 Technology

Can you try this diff?

diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 5b2e761..637f980 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -48,6 +48,7 @@ struct cmos_rtc {
 	struct device		*dev;
 	int			irq;
 	struct resource		*iomem;
+	struct rtc_wkalrm	alm;
 
 	void			(*wake_on)(struct device *);
 	void			(*wake_off)(struct device *);
@@ -59,6 +60,8 @@ struct cmos_rtc {
 	u8			day_alrm;
 	u8			mon_alrm;
 	u8			century;
+
+	bool			valid_alarm;
 };
 
 /* both platform and pnp busses use negative numbers for invalid irqs */
@@ -879,6 +882,7 @@ static int cmos_suspend(struct device *dev)
 
 		cmos_checkintr(cmos, tmp);
 	}
+	cmos->valid_alarm = !!cmos_read_alarm(dev, &cmos->alm);
 	spin_unlock_irq(&rtc_lock);
 
 	if (tmp & RTC_AIE) {
@@ -949,6 +953,10 @@ static int cmos_resume(struct device *dev)
 			hpet_mask_rtc_irq_bit(RTC_AIE);
 		} while (mask & RTC_AIE);
 	}
+
+	if (cmos->valid_alarm)
+		cmos_set_alarm(dev, &cmos->alm);
+
 	spin_unlock_irq(&rtc_lock);
 
 	dev_dbg(dev, "resume, ctrl %02x\n", tmp);


-- 
Matthew Garrett | mjg59@...f.ucam.org
--
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/