On Thu, Nov 19, 2015 at 7:56 AM, Andy Lutomirski <luto@xxxxxxxxxx> wrote: > I unloaded and reloaded hid_multitouch (on a Skylake laptop where the > HID device is behind an integrated designware controller) and I got: > > [39545.054684] i2c_hid i2c-DLL0704:01: failed to retrieve report from device. > [39545.061728] i2c_designware i2c_designware.1: > i2c_dw_handle_tx_abort: lost arbitration > [39545.061734] i2c_hid i2c-DLL0704:01: failed to retrieve report from device. > [39545.061944] i2c_hid i2c-DLL0704:01: failed to retrieve report from device. > [39545.062373] i2c_hid i2c-DLL0704:01: error in i2c_hid_init_report > size:6 / ret_size:4 > [39545.062564] i2c_hid i2c-DLL0704:01: failed to retrieve report from device. > [39545.062636] input: DLL0704:01 06CB:76AE UNKNOWN as > /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-7/i2c-DLL0704:01/0018:06CB:76AE.0005/input/input20 > [39545.063212] hid-multitouch 0018:06CB:76AE.0005: input,hidraw1: > <UNKNOWN> HID v1.00 Mouse [DLL0704:01 06CB:76AE] on > [40178.534814] i2c_hid i2c-DLL0704:01: failed to retrieve report from device. > [40178.541848] i2c_designware i2c_designware.1: > i2c_dw_handle_tx_abort: lost arbitration > [40178.541853] i2c_hid i2c-DLL0704:01: failed to retrieve report from device. > [40179.542135] i2c_designware i2c_designware.1: controller timed out > [40179.542166] i2c_hid i2c-DLL0704:01: failed to retrieve report from device. > [40180.542909] i2c_designware i2c_designware.1: controller timed out > [40180.542942] i2c_hid i2c-DLL0704:01: failed to retrieve report from device. > [40181.543697] i2c_designware i2c_designware.1: controller timed out > > after that, I just keep seeing "controller timed out" messages. > > This is Linux 4.3.0. This just happened again (after a reboot) on its own without any rmmod. Reloading the i2c_designware drivers didn't help, so I'm wondering if it's a bug lower in the stack instead. Reloading intel-lpss-acpi after the failure says: [ 695.955911] idma64 idma64.0: Found Intel integrated DMA 64-bit [ 695.966755] idma64 idma64.1: Found Intel integrated DMA 64-bit [ 696.967468] i2c_designware i2c_designware.1: controller timed out [ 696.967550] i2c_hid i2c-DLL0704:01: hid_descr_cmd failed This is a Dell XPS 13 9350. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
