Messages in this thread | | | Date | Sat, 05 Jan 2013 16:42:58 +0400 | From | Konstantin Khlebnikov <> | Subject | Re: [REGRESSION 3.8-r1] broken pci irq/pm state for e1000e device |
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Konstantin Khlebnikov wrote: > Konstantin Khlebnikov wrote: >> Seems like it's unrelated to e1000e driver itself, because I tried to >> revert all it's changes down to 3.6 one by one and it does not help.
Ouch, 3.6 also affected, seems like I was more lucky at that time and bug never showed up.
root@zurg:/sys/bus/pci/devices# uname -a Linux zurg 3.6.0-zurg #571 SMP Mon Oct 1 14:24:25 MSK 2012 x86_64 GNU/Linux
root@zurg:/sys/bus/pci/devices# cat 0000\:00\:19.0/enable ; modprobe e1000e ; sleep 2 ; rmmod e1000e ; cat 0000\:00\:19.0/enable 4294967293 4294967292
So, this bug actually in e1000e driver. Add their mail-list into CC.
But core code should at least print some warnings...
>> >> Looks like regression somewhere in pci-bus irq or power-management. >> because I see underflow of counter pci_dev->enable_cnt: >> >> root@zurg:/sys/bus/pci/devices# cat 0000\:00\:19.0/enable ; modprobe e1000e ; sleep 2 ; rmmod e1000e ; cat 0000\:00\:19.0/enable >> 4294967288 >> 4294967287 >> >> without sleep in the middle it does not work > > Hmm, 3.7 also affected. This is not good. > > root@zurg:/sys/bus/pci/devices# cat 0000\:00\:19.0/enable > 4294967293 > root@zurg:/sys/bus/pci/devices# uname -a > Linux zurg 3.7.1-zurg #631 SMP Sat Dec 29 11:54:15 MSK 2012 x86_64 GNU/Linux > >> >> my kernel config in attachment >> hardware: lenovo thinkpad x220 >> >> root@zurg:/sys/bus/pci/devices# uname -a >> Linux zurg 3.8.0-rc1-zurg-00091-g4a490b7 #632 SMP Tue Jan 1 20:02:31 MSK 2013 x86_64 GNU/Linux >> > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.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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