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Date: Mon, 01 Dec 2008 13:18:50 -0500 (EST) From: Len Brown <lenb@...nel.org> To: Mark Lord <lkml@....ca> Cc: Alessandro Zummo <a.zummo@...ertech.it>, David Brownell <david-b@...bell.net>, lkml <linux-kernel@...r.kernel.org>, rtc-linux@...glegroups.com, linux-acpi@...r.kernel.org Subject: Re: PATCH: /proc/acpi/alarm: handle day-of-month wraparound on readback On Mon, 1 Dec 2008, Mark Lord wrote: > Fix month wrap issue with readback from /proc/acpi/alarm > This bug has been around *forever*. > > $ echo '2008-12-01 10:36:20' > /proc/acpi/alarm > $ cat /proc/acpi/alarm > 2008-11-01 10:36:20 > > Note how the readback above shows the month incorrectly. > But with this patch applied, it shows the correct month (12). > > Patch applies/works on kernels 2.6.25.* through 2.6.27.*, > and probably on earlier kernels as well. We've had some BCD_TO_BIN() changes here in 2.6.28 already, does 2.6.28-rc still have this bug? I'd check myself, but I don't have a /proc/acpi/alarm due to this: #if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) || !defined(CONFIG_X86) /* use /sys/class/rtc/rtcX/wakealarm instead; it's not ACPI-specific */ #else #define HAVE_ACPI_LEGACY_ALARM #endif thanks, -Len -- 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/
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