Hello Elad Alfassa, I'm not too sure exactly what has caused such a regression but I will try and help. There was very little added to the accelerometer driver in between those releases only, some slight power modifications and raw read support. Have you tried using the sysfs interface for the IIO accelerometer. Should be located in /sys/bus/iio/devices/iio:devicex/ In that directory, on the newest kernel, there should be a in_accel_x_raw file, can you read new data from this? Can you provide more detail about the error. Turn on dynamic debugging for hid-sensor-hub and hid-sensor-accel-3d modules. Then try enabling the scan elements and the buffer with the sysfs interface and post the full dmesg output. Also print the HID report description found on debugfs usually somewhere like (/sys/kernel/debug/hid/xxxx:xxxx:/rdesc) Maybe with this extra information the problem will be more clear. For a possible fix you can try adding the devices USB HID ID's, for the sensor hub, to the hid-sensor-hub driver hid_device_id struct. This will allow adding a quirk for your device and should setup the power state and enable the sensor hub correctly. Good luck, Reyad Attiyat On Mon, Aug 11, 2014 at 8:51 AM, Elad Alfassa <elad@xxxxxxxxxxxxxxxxx> wrote: > On Mon, Aug 11, 2014 at 3:16 PM, Elad Alfassa <elad@xxxxxxxxxxxxxxxxx> wrote: >> Hi. >> >> I have a Thinkpad Twist, this is a Windows 8 certified machine from >> around 2012, and it has an accelerometer. >> Running kernel 3.16.0-1.fc22.x86_64, I'm getting "Resource Temporarily >> Unavailable" when trying to read from the accelerometer. >> >> Tiny bit more details: >> https://github.com/hadess/iio-sensor-proxy/issues/1 >> https://sysdev.microsoft.com/en-us/hardware/LPL/ProductDetails.aspx?ProductID=98463&OrganizationID=4733 >> >> Is this a known issue? Can I help debug this in any way? >> >> >> Thanks. >> >> -- >> -Elad Alfassa. > > Hi. > Turns out this is a regression - it works well with kernel > 3.15.8-200.fc20.x86_64 > I tried reporting this in the kernel bugzilla, but I couldn't find the > right component for the bug, so I filed it in RHBZ for now. > https://bugzilla.redhat.com/show_bug.cgi?id=1128760 > > > -- > -Elad Alfassa. > -- > To unsubscribe from this list: send the line "unsubscribe linux-iio" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
