linux-toradex.git/drivers/rtc, branch v2.6.25.12

rtc: rtc_time_to_tm: use unsigned arithmetic

2008-05-15T14:50:08+00:00

commit 945185a69daa457c4c5e46e47f4afad7dcea734f upstream
Date: Mon, 12 May 2008 14:02:24 -0700
Subject: rtc: rtc_time_to_tm: use unsigned arithmetic

The input argument to rtc_time_to_tm() is unsigned as well as are members of
the output structure.  However signed arithmetic is used within for
calculations leading to incorrect results for input values outside the signed
positive range.  If this happens the time of day returned is out of range.

Found the problem when fiddling with the RTC and the driver where year was set
to an unexpectedly large value like 2070, e.g.:

rtc0: setting system clock to 2070-01-01 1193046:71582832:26 UTC (3155760954)

while it should be:

rtc0: setting system clock to 2070-01-01 00:15:54 UTC (3155760954)

Changing types to unsigned fixes the problem.

[akpm@linux-foundation.org: remove old-fashioned `register' keyword]
Signed-off-by: Maciej W. Rozycki 
Cc: Alessandro Zummo 
Cc: David Brownell 
Cc: Dmitri Vorobiev 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

rtc-pcf8583 build fix

2008-05-01T21:44:37+00:00

commit 77459b059b02c16b2c8cbc39b524941a576ad36e upstream


Fix bogus #include in rtc-pcf8583, so it compiles on platforms that
don't support PC clone RTCs.  (Original issue noted by Adrian Bunk.)

Signed-off-by: David Brownell 
Cc: Adrian Bunk 
Acked-by: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

rtc: fix the error in the function of cmos_set_alarm

2008-04-16T02:35:40+00:00

There is a bug in the function of cmos_set_alarm.  RTC alarm time for October
can't be set correctly.

For October: 0x0A will be written into the RTC region (MONTH_ALARM) in current
kernel.  But in fact 0x10 should be written.  Wildcards are also not handled
correctly.

Signed-off-by: Zhao Yakui 
Signed-off-by: Zhang Rui 
Signed-off-by: David Brownell 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: fix platform driver hotplug/coldplug

2008-04-11T15:06:44+00:00

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable RTC
platform drivers, to re-enable module auto loading.

[dbrownell@users.sourceforge.net: more drivers, minor fix]
Signed-off-by: Kay Sievers 
Signed-off-by: David Brownell 
Cc: Greg KH 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: rtc-s35390a.c needs the bitreverse library

2008-04-11T15:06:43+00:00

rtc-s35390a uses BITREVERSE functions so it needs to select that config symbol
to ensure that the functions are built.

  drivers/built-in.o: In function `s35390a_set_datetime':
  linux-2.6.25-rc8-git7/drivers/rtc/rtc-s35390a.c:144: undefined reference to `byte_rev_table'
  drivers/built-in.o: In function `s35390a_get_datetime':
  linux-2.6.25-rc8-git7/drivers/rtc/rtc-s35390a.c:163: undefined reference to `byte_rev_table'

Signed-off-by: Randy Dunlap 
Acked-by: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc-at91sam9 fixes

2008-03-20T01:53:37+00:00

Updates to the at91sam9 rtt-as-rtc driver:

 - Bugfix:  IRQ enable bits need shifting before masking with status
 - Platform code to initialize wakeup bits didn't get merged; cope

Signed-off-by: David Brownell 
Cc: Justin Waters 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: fix kconfig help

2008-03-20T01:53:36+00:00

Signed-off-by: Alessandro Zummo 
Cc: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc: add support for the S-35390A RTC chip

2008-03-05T00:35:09+00:00

This adds basic get/set time support for the Seiko Instruments S-35390A.
This chip communicates using I2C and is used on the QNAP TS-109/TS-209 NAS
devices.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Byron Bradley 
Acked-by: Jean Delvare 
Acked-by: David Brownell 
Tested-by: Tim Ellis 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc-cmos: display HPET emulation mode

2008-02-24T01:12:14+00:00

For the "cmos" RTC, have /proc/driver/rtc say whether HPET based IRQ
emulation is in effect.  Given the problems we've had with this particular
hardware maldesign (and the fact that most BIOS code seems not to provide
the IRQ routing needed to use the saner HPET modes), this should help
troubleshooting.

Signed-off-by: David Brownell 
Cc: Alessandro Zummo 
Cc: Ingo Molnar 
Cc: Thomas Gleixner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rtc-r9701.c: silence compiler warning

2008-02-10T07:27:01+00:00

Commit 75b6102257874a4ea796af686de2f72cfa0452f9 ("rtc: add support for
Epson RTC-9701JE V4") introduced the warning

  drivers/rtc/rtc-r9701.c: In function `r9701_get_datetime':
  drivers/rtc/rtc-r9701.c:74: warning: unused variable `time'

Signed-off-by: S.Çağlar Onur 
Signed-off-by: Linus Torvalds