Re: [Bug 10866] /dev/rtc was missing until I disabled CONFIG_RTC_CLASS

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From: Ingo Molnar
Date: Saturday, June 14, 2008 - 3:38 am

* David Brownell <david-b@pacbell.net> wrote:


you are arguing against the facts - just look at the report - /dev/rtc 
broke and that shouldnt have happened and should be fixed. No amount of 
talking you do here will produce a working config.


i have hit 1400 kernel bugs in the past 6 months alone on my 
testsystems. That does not mean kernel bugs are the norm and it does not 
entitle me to ignore kernel bugs in the future?


uhm, there's no such thing as a "bogus configuration". The Kconfig rules 
for RTC (authored by you too) allowed it. If it "makes no sense" it's 
because you coded it so - deal with it, it's not hard. But instead of 
solving it (it is trivial) you are trying to push the blame to the user 
- and that is rather lame to do.


this is not rocket science. The solution is to turn on the fine RTC 
code, if the old config option is enabled too. I.e. be more careful 
about compatibility. It's still possible to solve this problem and allow 
the RTC code to be compiled out completely.

and note that you are hurting users who tried out _your_ RTC code (which 
was default off in the past) previously. Yes, while experimenting with 
your code they might have created the "wrong" mix of config options but 
that's not a problem - this isnt some esoteric embedded platform where 
only real men are allowed to configure the kernel and who are left out 
in the cold if they mess up - this is Linux where we encourage (and beg) 
actual user to test our kernels. So please show some basic respect 
towards them and dont arbitrarily declare configs "broken" that were 
working in the past.

	Ingo
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Messages in current thread:
2.6.26-rc5-git2: Reported regressions from 2.6.25, Rafael J. Wysocki, (Sat Jun 7, 1:38 pm)
[Bug #10493] mips BCM47XX compile error, Rafael J. Wysocki, (Sat Jun 7, 1:38 pm)
[Bug #10764] some serial configurations are now broken, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10748] dhclient fails to run; capabilities error, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10741] bug in `tty: BKL pushdown'?, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10726] x86-64 NODES_SHIFT compile failure., Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10724] ACPI: EC: GPE storm detected, disabling EC GPE, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10725] Write protect on on, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10714] Badness seen on 2.6.26-rc2 with lockdep enabled, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10629] 2.6.26-rc1-$sha1: RIP __d_lookup+0x8c/0x160, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10616] Horrendous Audio Stutter - current git, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #9791] Clock is running too fast^Wslow using acpi_pm ..., Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10861] 2.6.26-rc4-git2 - long pause during boot, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10872] x86_64 boot hang when CONFIG_NUMA=n, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10874] blackfin drivers/net/smc91x.c build error, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10873] serial/bfin_5xx.c build error, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10864] [regression][bisected] ~90,000 wakeups as of ..., Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10863] kvm causing memory corruption? now 2.6.26-rc4, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10862] forcedeth: lockdep warning on ethtool -s, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10860] total system freeze at boot with 2.6.26-rc, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10830] two different oopses with 2.6.26-rc4, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10823] stuck localhost TCP connections, v2.6.26-rc3+, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10827] 2.6.26rc4 GFS2 oops., Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10826] NFS oops in 2.6.26rc4, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10825] appletouch after wakeup, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10819] Fatal DMA error with b43 driver since 2.6.26, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10821] rt25xx: lock dependancy warning, association ..., Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10816] vt/fbcon: fix background color on line feed, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10799] sky2 general protection fault, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10794] mips: CONF_CM_DEFAULT build error, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10787] pcie hotplug bootup crash fix, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
[Bug #10786] 2.6.26-rc3 64bit SMP does not boot on J5600, Rafael J. Wysocki, (Sat Jun 7, 1:42 pm)
Re: [Bug #10825] appletouch after wakeup, Justin Mattock, (Sat Jun 7, 3:54 pm)
Re: [Bug #10816] vt/fbcon: fix background color on line feed, Rafael J. Wysocki, (Sun Jun 8, 9:52 am)
Re: [Bug #10825] appletouch after wakeup, Rafael J. Wysocki, (Sun Jun 8, 9:53 am)
Re: [Bug #10860] total system freeze at boot with 2.6.26-rc, Rafael J. Wysocki, (Sun Jun 8, 9:58 am)
Re: [Bug #10825] appletouch after wakeup, Justin Mattock, (Sun Jun 8, 11:26 am)
Re: [Bug #10787] pcie hotplug bootup crash fix, Kenji Kaneshige, (Mon Jun 9, 1:22 am)
Re: [Bug #10825] appletouch after wakeup, Oliver Neukum, (Mon Jun 9, 2:07 am)
Re: [Bug #10825] appletouch after wakeup, Justin Mattock, (Mon Jun 9, 9:18 am)
Re: [Bug #10825] appletouch after wakeup, Oliver Neukum, (Mon Jun 9, 12:53 pm)
Re: [Bug #10825] appletouch after wakeup, Justin Mattock, (Mon Jun 9, 1:29 pm)
Re: [Bug #10825] appletouch after wakeup, Oliver Neukum, (Mon Jun 9, 1:31 pm)
Re: [Bug #10825] appletouch after wakeup, Justin Mattock, (Mon Jun 9, 1:52 pm)
Re: [Bug #10825] appletouch after wakeup, Oliver Neukum, (Mon Jun 9, 2:16 pm)
Re: [Bug #10825] appletouch after wakeup, Justin Mattock, (Mon Jun 9, 3:04 pm)
Re: [Bug #10825] appletouch after wakeup, Justin Mattock, (Mon Jun 9, 3:36 pm)
Re: [Bug #10825] appletouch after wakeup, Oliver Neukum, (Mon Jun 9, 3:40 pm)
Re: [Bug #10825] appletouch after wakeup, Justin Mattock, (Mon Jun 9, 5:03 pm)
Re: [Bug #10825] appletouch after wakeup, Jiri Kosina, (Mon Jun 9, 5:06 pm)
Re: [Bug #10825] appletouch after wakeup, Justin Mattock, (Mon Jun 9, 6:11 pm)
Re: [Bug #10493] mips BCM47XX compile error, Adrian Bunk, (Wed Jun 11, 9:17 am)
Re: [Bug #10794] mips: CONF_CM_DEFAULT build error, Adrian Bunk, (Wed Jun 11, 11:51 am)
Re: [Bug #10872] x86_64 boot hang when CONFIG_NUMA=n, Randy Dunlap, (Wed Jun 11, 1:30 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Adrian Bunk, (Fri Jun 13, 6:52 am)
Re: [Bug 10866] /dev/rtc was missing until I disabled CONF ..., Ingo Molnar, (Sat Jun 14, 3:38 am)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Paul E. McKenney, (Sat Jun 14, 7:42 am)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Oleg Nesterov, (Sat Jun 14, 7:58 am)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Paul E. McKenney, (Sat Jun 14, 11:12 am)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Alexey Dobriyan, (Sat Jun 14, 12:43 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Paul E. McKenney, (Sat Jun 14, 8:30 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Alexey Dobriyan, (Sun Jun 15, 9:21 am)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Paul E. McKenney, (Sun Jun 15, 11:17 am)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Linus Torvalds, (Sun Jun 15, 1:32 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Paul E. McKenney, (Sun Jun 15, 4:26 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Paul E. McKenney, (Sun Jun 15, 4:27 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Linus Torvalds, (Sun Jun 15, 4:38 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Alexey Dobriyan, (Sun Jun 15, 8:01 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Paul E. McKenney, (Sun Jun 15, 8:31 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Alexey Dobriyan, (Sun Jun 15, 8:46 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Vegard Nossum, (Mon Jun 16, 6:53 am)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Paul E. McKenney, (Mon Jun 16, 8:42 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Alexey Dobriyan, (Mon Jun 23, 5:50 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Linus Torvalds, (Mon Jun 23, 6:31 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Nick Piggin, (Mon Jun 23, 6:51 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Paul E. McKenney, (Tue Jun 24, 5:04 am)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Paul E. McKenney, (Tue Jun 24, 2:08 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Ingo Molnar, (Tue Jun 24, 2:15 pm)
Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0, Paul E. McKenney, (Wed Jun 25, 2:04 am)