Re: Regression in inv_mpu6050: 4.6.0-rc5

From: Crestez Dan Leonard
Date: Tue May 03 2016 - 14:54:11 EST

On 05/01/2016 10:58 PM, Jonathan Cameron wrote:
> On 27/04/16 16:56, One Thousand Gnomes wrote:
>> On Tue, 26 Apr 2016 18:07:55 -0500
>> Michael Welling <mwelling@xxxxxxxx> wrote:
>>> On Tue, Apr 26, 2016 at 11:26:51PM +0100, One Thousand Gnomes wrote:
>>>> This now causes us to crash and burn on the ASUS T100TA Baytrail/T
>>>> platforms
>>> I believe this regression has already been patched.
>>> Check the latest commits in linux-next.
>>> See if the latest patches fix your issue.
>> It does - as this is a regression can we please get those fixes into the
>> next -rc ?
> I'm afraid I'm lost in this one - which patch caused the regression and
> which one fixed it? The only patches I can immediately see in next
> both introduce and then squish a similar bug, but neither of them
> has hit Linus' tree yet.
> Or are we dealing with what was fixed in:
> c816d9e7 iio: imu: mpu6050: fix possible NULL dereferences
> I had understood that one as more hypothetical than real...
> Unfortunately I'm travelling and I suspect that means this will only get
> in just after the release (so for 4.6.1) once I've confirmed which fixes
> we actually need to backport.
c816d9e7: iio: imu: mpu6050: fix possible NULL dereferences
33da559f: iio: imu: mpu6050: add mpu6500 register settings

As far as I can tell this crash will always happen when the device is
probed via ACPI.