+ Nicholas Krause On 13 April 2016 at 20:19, Laszlo Fiat <laszlo.fiat@xxxxxxxxx> wrote: > Adrian, Ulf, > > Here are the two v4.6-rc3 kernel dmesg with mmc-debug option, both > without additional patches, one working case [1], one failing case > [2], the working case has patch [3] reverted. > > I also uploaded the acpidump [4] for Teclast X80h Baytrail-T tablet. > > [1]: https://bugzilla.kernel.org/show_bug.cgi?id=112571#c11 > [2]: https://bugzilla.kernel.org/show_bug.cgi?id=112571#c10 > [3]: patch 520bd7a8b4152aacfbd34eb7f7a447354b631039 ("mmc: core: > Optimize boot time by detecting cards simultaneously") > [4]: https://bugzilla.kernel.org/show_bug.cgi?id=112571#c12 > Adrian, did you manage to get some time to look into the debug data from this issue? I understand if you have been busy and no worries, although I don't know who else to ping about this. I don't want to us revert 520bd7a8b4152aacfbd34eb7f7a447354b631039, because I believe it will just hide the problem in sdhci(-acpi). Instead, I intend to wait for a proper fix, does that sounds reasonable to you as well? Kind regards Uffe > On Wed, Apr 13, 2016 at 1:19 PM, Adrian Hunter <adrian.hunter@xxxxxxxxx> wrote: >> On 12/04/16 21:15, Laszlo Fiat wrote: >>> Adrian, Ulf, >>> >>> All the mmc related patches are from [1] above. I have one extra patch >>> for rfkill-gpio to get bluetooth working, and one to ignore efi-bgrt, >>> but these are unrelated to mmc. Actually we can survive some time >>> without the out-of-tree mmc patches, but usually we freeze within 1-2 >>> hours, that is why we need them. >>> >>> I have compiled a v4.6-rc3 vanilla, without any additional patches and >>> with CONFIG_MMC_DEBUG=y, and created dmesg: [3] >> >> Looks like every command to the SDIO card fails. >> >>> >>> I will compile the same one with the offending commit 520bd7a8b415 >>> reverted, so that we can compare what happens differently. >>> >>> For acpidump, which format do you need? >> >> Doesn't matter which format. >> >>> >>> Thank you for looking into this. >>> >>> Best regards, >>> >>> Laszlo Fiat >>> >>> [3]: https://bugzilla.kernel.org/show_bug.cgi?id=112571#c10 >>> >>> On Mon, Apr 11, 2016 at 2:46 PM, Adrian Hunter <adrian.hunter@xxxxxxxxx> wrote: >>>> On 11/04/16 11:25, Ulf Hansson wrote: >>>>> + Adrian >>>>> >>>>> On 10 April 2016 at 20:04, Laszlo Fiat <laszlo.fiat@xxxxxxxxx> wrote: >>>>>> Hello, >>>>>> >>>>> >>>>> Hi Laszlo, >>>>> >>>>> Thanks for your report! >>>>> >>>>>> I have tested this patch on top of v4.6-rc2 + our usual out-of-tree >>>>>> patches from [1], and there is still no SDIO wifi showing up on >>>>>> baytrail-t. dmesg is available at [2]. >>>>>> >>>>>> [1] https://github.com/hadess/rtl8723bs/tree/master/patches >>>>>> [2] https://bugzilla.kernel.org/show_bug.cgi?id=112571#c9 >>>>>> >>>>> >>>>> I understand this issue isn't for an upstream kernel, as you are >>>>> carrying out of tree patches to enable sdhci, sdhci-acpi and sdhci-pci >>>>> to work for your platform. >>>>> >>>>> As my bandwidth is limited, normally I can't spend time on >>>>> non-upstream kernel reported regressions. Anyway, I decided to help >>>>> study the kernel log in a bit more detail, but unfortunate I am not >>>>> able to figure out what goes wrong. >>>>> >>>>> >From looking at the errors and a stack trace that gets dumped in the >>>>> kernel log, my guess is that the problem lies within sdhci/sdhci-acpi. >>>>> The errors seems related to your out of tree patches. >>>>> >>>>> Regarding commit 520bd7a8b415 ("mmc: core: Optimize boot time by >>>>> detecting cards simultaneously"), even if it seems to be triggering >>>>> the regression for you, I find it highly unlikely that this is the >>>>> root cause. >>>>> >>>>> Someone that knows Baytrail/sdhci-acpi needs to help out with >>>>> debugging. Perhaps Adrian or some other Intel folkz are available!? >>>> >>>> Need to know exactly what patches you have. Is it only the ones from [1] above? >>>> >>>> You could do an acpidump and also try the failing case with CONFIG_MMC_DEBUG=y. >>>> >>> >> -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
