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linux/drivers/rtc
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Bjorn Helgaas 72f22b1eb6 rtc-cmos: look for PNP RTC first, then for platform RTC 
We shouldn't rely on "pnp_platform_devices" to tell us whether there
is a PNP RTC device.

I introduced "pnp_platform_devices", but I think it was a mistake.
All it tells us is whether we found any PNPBIOS or PNPACPI devices.
Many machines have some PNP devices, but do not describe the RTC
via PNP.  On those machines, we need to do the platform driver probe
to find the RTC.

We should just register the PNP driver and see whether it claims anything.
If we don't find a PNP RTC, fall back to the platform driver probe.

This (in conjunction with the arch/x86/kernel/rtc.c patch to add
a platform RTC device when PNP doesn't have one) should resolve
these issues:

    http://bugzilla.kernel.org/show_bug.cgi?id=11580
    https://bugzilla.redhat.com/show_bug.cgi?id=451188

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Reported-by: Rik Theys <rik.theys@esat.kuleuven.be>
Reported-by: shr_msn@yahoo.com.tw
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-14 16:30:14 -07:00
..
class.c RTC: periodic irq fix 2007-10-16 09:43:13 -07:00
hctosys.c rtc_hctosys expects RTCs in UTC (doc) 2007-11-14 18:45:36 -08:00
interface.c rtc: don't return -EBUSY when mutex_lock_interruptible() fails 2008-07-30 09:41:45 -07:00
Kconfig drivers/rtc/Kconfig: don't build rtc-cmos.o on sparc32 2008-09-22 21:40:04 -07:00
Makefile rtc: Add Starfire platform RTC driver. 2008-08-29 14:16:52 -07:00
rtc-at32ap700x.c rtc-at32ap700x: Enable wakeup 2008-07-02 11:05:01 +02:00
rtc-at91rm9200.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
rtc-at91sam9.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
rtc-bfin.c Blackfin RTC Driver: dont let RTC programming in bootloaders randomly cause ~5 second boot delays 2008-08-20 15:40:30 -07:00
rtc-bq4802.c rtc-bq4802: Fix sparse warnings. 2008-09-09 19:50:04 -07:00
rtc-cmos.c rtc-cmos: look for PNP RTC first, then for platform RTC 2008-10-14 16:30:14 -07:00
rtc-core.h rtc: update to class device removal patches 2007-05-08 11:15:18 -07:00
rtc-dev.c rtc: fix kernel panic on second use of SIGIO nofitication 2008-10-03 18:22:17 -07:00
rtc-ds1216.c rtc: fix platform driver hotplug/coldplug 2008-04-11 08:06:44 -07:00
rtc-ds1302.c rtc: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:17 -07:00
rtc-ds1305.c rtc: ds1305/ds1306 driver 2008-07-24 10:47:33 -07:00
rtc-ds1307.c i2c: Convert most new-style drivers to use module aliasing 2008-04-29 23:11:40 +02:00
rtc-ds1374.c rtc: rtc-ds1374: fix 'no irq' case handling 2008-08-20 15:40:32 -07:00
rtc-ds1511.c fix irq flags in rtc-ds1511 2008-05-08 10:46:55 -07:00
rtc-ds1553.c rtc: fix platform driver hotplug/coldplug 2008-04-11 08:06:44 -07:00
rtc-ds1672.c rtc: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:17 -07:00
rtc-ds1742.c rtc: fix platform driver hotplug/coldplug 2008-04-11 08:06:44 -07:00
rtc-ep93xx.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
rtc-fm3130.c rtc-fm3130: fix chip naming 2008-07-12 14:33:41 -07:00
rtc-isl1208.c rtc-isl1208: fix double removal of a sysfs entry 2008-08-12 16:07:28 -07:00
rtc-lib.c rtc_time_to_tm: fix signed/unsigned arithmetic 2008-09-02 19:21:40 -07:00
rtc-m41t80.c rtc: m41t80: use pr_info() as appropriate 2008-07-24 10:47:33 -07:00
rtc-m41t94.c rtc: add support for ST M41T94 SPI RTC 2008-07-24 10:47:33 -07:00
rtc-m48t59.c rtc-m48t59: Only check century bits on m48t59 chips. 2008-09-09 19:38:17 -07:00
rtc-m48t86.c rtc: fix platform driver hotplug/coldplug 2008-04-11 08:06:44 -07:00
rtc-max6900.c rtc: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:17 -07:00
rtc-max6902.c removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00
rtc-omap.c rtc: rtc-omap footprint shrinkage 2008-07-24 10:47:33 -07:00
rtc-pcf8563.c rtc-pcf8563: add chip id 2008-07-12 14:33:42 -07:00
rtc-pcf8583.c rtc: convert the PCF8583 driver to the new I2C style framework with device_ids 2008-07-24 10:47:34 -07:00
rtc-pl030.c [RTC] rtc-pl030: add driver, remove old non-rtc lib driver 2008-05-22 14:56:38 +01:00
rtc-pl031.c [RTC] rtc-pl031: use proper resources, use proper apis, clean up includes 2008-05-22 14:56:36 +01:00
rtc-ppc.c rtc: class driver for ppc_md RTC functions 2008-06-06 11:29:13 -07:00
rtc-proc.c drivers: use non-racy method for proc entries creation (2) 2008-04-29 08:06:22 -07:00
rtc-r9701.c removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00
rtc-rs5c313.c rtc: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:17 -07:00
rtc-rs5c348.c [PATCH] rtc: Make rtc-rs5c348 driver hotplug-aware 2007-08-27 02:16:58 +01:00
rtc-rs5c372.c i2c: Convert most new-style drivers to use module aliasing 2008-04-29 23:11:40 +02:00
rtc-s3c.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
rtc-s35390a.c i2c: Match dummy devices by type 2008-05-11 20:37:06 +02:00
rtc-sa1100.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
rtc-sh.c rtc: rtc-sh: Fixup for 64-bit resources. 2008-05-08 19:51:45 +09:00
rtc-starfire.c rtc: Add Starfire platform RTC driver. 2008-08-29 14:16:52 -07:00
rtc-stk17ta8.c rtc: fix platform driver hotplug/coldplug 2008-04-11 08:06:44 -07:00
rtc-sun4v.c rtc: Add Sun4V hypervisor RTC driver. 2008-08-29 14:16:50 -07:00
rtc-sysfs.c rtc: add the support for alarm time relative to current time in sysfs 2008-04-28 08:58:17 -07:00
rtc-test.c rtc: silence section mismatch warning in rtc-test 2008-04-28 08:58:16 -07:00
rtc-v3020.c rtc: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:17 -07:00
rtc-vr41xx.c rtc-vr41xx: add irq_set_freq() and irq_set_state() 2008-07-24 10:47:34 -07:00
rtc-x1205.c rtc-x1205: Fix alarm set 2008-07-04 10:40:05 -07:00