[Bug 1910639] Re: DMI entry syntax fix for Pegatron / ByteSpeed C15B

https://lists.ubuntu.com/archives/kernel-team/2021-January/116319.html

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https://bugs.launchpad.net/bugs/1910639

Title:
DMI entry syntax fix for Pegatron / ByteSpeed C15B

Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Xenial:
Incomplete
Status in linux source package in Bionic:
Incomplete
Status in linux source package in Focal:
Incomplete
Status in linux source package in Groovy:
Incomplete
Status in linux source package in Hirsute:
Incomplete

Bug description:
[Impact]
Upstream reports that when compiling the kernel with a48491c65b51 ("Input: i8042 - add ByteSpeed touchpad to noloop table"), g++ will complain about:
    drivers/input/serio/i8042-x86ia64io.h:225:3: error: '.matches' designator used multiple times in the same initializer list

C99 semantics is that last duplicated initialiser wins,
so DMI entry gets overwritten.

[Fix]
* a3a9060ecad030 ("Input: i8042 - unbreak Pegatron C15B") in linux-next

This can be cherry-picked into all the affected series.
Note that patch for bug 1906128 should be applied first.

[Test]
I didn't get this error while building the test kernels for bug 1906128 on builder kathleen, with fakeroot commands.

So the only thing that I can test is to build them again and make sure
there is no other issues.

[Where problems could occur]
If this fix is incorrect it might affect the touchpad support on Pegatron / ByteSpeed C15B laptop.

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