On Mon, Sep 18 2017 at 3:01:32 pm BST, Albert Weichselbraun <albert@xxxxxxxxxxxxxxxxx> wrote: > On Mon, 2017-09-18 at 12:46 +0100, Marc Zyngier wrote: >> On 18/09/17 09:49, Albert Weichselbraun wrote: >> > Hi Marc, >> > >> > 100% ack >> > - Booting with a kernel that does not do a PCI reset yields the >> > following topology: >> > >> > <snip cmd="lspci -vt"> >> > -[0000:00] - >> > +-00.0 Intel Corporation 2nd Generation Core Processor Family >> > DRAM >> > Controller >> > +-02.0 Intel Corporation 2nd Generation Core Processor Family >> > Integrated Graphics Controller >> > +-16.0 Intel Corporation 6 Series/C200 Series Chipset Family MEI >> > Controller #1 >> > +-19.0 Intel Corporation 82579LM Gigabit Network Connection >> > +-1a.0 Intel Corporation 6 Series/C200 Series Chipset Family USB >> > Enhanced Host Controller #2 >> > +-1b.0 Intel Corporation 6 Series/C200 Series Chipset Family High >> > Definition Audio Controller >> > +-1c.0-[02]-- >> > +-1c.1-[03]----00.0 Intel Corporation Centrino Advanced-N 6205 >> > [Taylor Peak] >> > +-1c.3-[05-0c]----00.0 Renesas Technology Corp. uPD720202 USB 3.0 >> > Host Controller >> > +-1c.4-[0d]----00.0 Ricoh Co Ltd MMC/SD Host Controller >> > +-1d.0 Intel Corporation 6 Series/C200 Series Chipset Family USB >> > Enhanced Host Controller #1 >> > +-1f.0 Intel Corporation QM67 Express Chipset Family LPC >> > Controller >> > +-1f.2 Intel Corporation 6 Series/C200 Series Chipset Family 6 >> > port >> > SATA AHCI Controller >> > \-1f.3 Intel Corporation 6 Series/C200 Series Chipset Family >> > SMBus >> > Controller >> > </snip> >> > >> > Unplugging and replugging the card (regardless of the kernel >> > version) >> > or booting with a kernel that does the reset leads to the card not >> > being correctly recognized and the problems I have observed. >> >> Hmmm. Just to make sure I understand you correctly: >> >> With a non-reset kernel: if you boot *without* the card inserted, but >> insert it at a later time, the card is unusable? If that's the case, >> that's quite unexpected too... > > This is exactly what is happening when booting with a non-reset kernel. > If you insert the card at a later time it is unusable and the system > starts to behave sluggish. > There is also not a single line logged in /var/log/kern.log. > > Once the card is removed everything is back to normal. Right. So that's just a new version of an existing problem. The issue is that the new reset behaves like an eject/insert sequence as far as the card is concerned, and this triggers a pre-existing issue. That's not to say that we should ignore your report, but I think we should try to fix the root cause, which is that your ExpressCard bridge and your car don't seem to like each other very much. Has this been ever reported on the PCI mailing list? Thanks, M. -- Jazz is not dead. It just smells funny. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
