3.0-rc3: No RTC device found

3.0-rc3: No RTC device found

[Meelis Roos]

This was my earlier report that I tought was sparc64 specific:

> Dmesg finds both OF RTC and PC RTC but later complains
> "No RTC device found, ALARM timers will not wake from suspend"

But today I noticed this while testing 3.0-rc3 on a PC:

[    0.313944] No RTC device found, ALARM timers will not wake from suspend
[    0.314275] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)

Later it detects PC RTC:

[    3.610210] rtc_cmos 00:03: RTC can wake from S4
[    3.611554] rtc_cmos 00:03: rtc core: registered rtc_cmos as rtc0
[    3.611669] rtc0: alarms up to one year, y3k, 114 bytes nvram

Bisecting it on sparc64 got me nowhere. Have not tried bisecting it on 
PC yet.

-- 
Meelis Roos (mroos@linux.ee)

Re: 3.0-rc3: No RTC device found

[John Stultz]

On Tue, 2011-06-14 at 12:06 +0300, Meelis Roos wrote:
> This was my earlier report that I tought was sparc64 specific:
> 
> > Dmesg finds both OF RTC and PC RTC but later complains
> > "No RTC device found, ALARM timers will not wake from suspend"
> 
> But today I noticed this while testing 3.0-rc3 on a PC:
> 
> [    0.313944] No RTC device found, ALARM timers will not wake from suspend
> [    0.314275] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
> 
> Later it detects PC RTC:
> 
> [    3.610210] rtc_cmos 00:03: RTC can wake from S4
> [    3.611554] rtc_cmos 00:03: rtc core: registered rtc_cmos as rtc0
> [    3.611669] rtc0: alarms up to one year, y3k, 114 bytes nvram
> 
> Bisecting it on sparc64 got me nowhere. Have not tried bisecting it on 
> PC yet.

Hmm. I'm guessing this is due to the RTC cmos module loading later then
expected. Don't bother bisecting, I'll see what I can do about it.

Thanks for the testing and feedback!
-john

Re: 3.0-rc3: No RTC device found

[Maciej Rutecki]

On wtorek, 14 czerwca 2011 o 11:06:49 Meelis Roos wrote:
> This was my earlier report that I tought was sparc64 specific:
> > Dmesg finds both OF RTC and PC RTC but later complains
> > "No RTC device found, ALARM timers will not wake from suspend"
> 
> But today I noticed this while testing 3.0-rc3 on a PC:
> 
> [    0.313944] No RTC device found, ALARM timers will not wake from suspend
> [    0.314275] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
> 
> Later it detects PC RTC:
> 
> [    3.610210] rtc_cmos 00:03: RTC can wake from S4
> [    3.611554] rtc_cmos 00:03: rtc core: registered rtc_cmos as rtc0
> [    3.611669] rtc0: alarms up to one year, y3k, 114 bytes nvram
> 
> Bisecting it on sparc64 got me nowhere. Have not tried bisecting it on
> PC yet.


I created a Bugzilla entry at 
https://bugzilla.kernel.org/show_bug.cgi?id=38092
for your bug report, please add your address to the CC list in there, thanks!

-- 
Maciej Rutecki
http://www.maciek.unixy.pl