> I built Xenial and Yakkety test kernels with this patch. It looks like it is not needed in Trusty, since commit 33d99113b110 was introduced in 3.14-rc1.
In fact, it is needed. The commit 33d99113b110 is already a fix (it fixes the same kind of problems) of the previous commits. So on trusty, we need 33d99113b110 + a220445f9f43.
> I built Xenial and Yakkety test kernels with this patch. It looks like it is not needed in Trusty, since commit 33d99113b110 was introduced in 3.14-rc1.
In fact, it is needed. The commit 33d99113b110 is already a fix (it fixes the same kind of problems) of the previous commits. So on trusty, we need 33d99113b110 + a220445f9f43.