bcm2835aux: broken in (4.9), 4.14 and 4.19

[Sean Nyekjaer <sean@xxxxxxxxxx>]

Hi,

Please consider picking:

commit 7188a6f0eee3f1fae5d826cfc6d569657ff950ec
Author: Martin Sperl <kernel@xxxxxxxxxxxxxxxx>
Date:   Sat Mar 30 09:30:58 2019 +0000

    spi: bcm2835aux: unifying code between polling and interrupt driven 
code

commit c7de8500fd8ecbb544846dd5f11dca578c3777e1
Author: Martin Sperl <kernel@xxxxxxxxxxxxxxxx>
Date:   Sat Mar 30 09:30:59 2019 +0000

    spi: bcm2835aux: remove dangerous uncontrolled read of fifo


commit 73b114ee7db1750c0b535199fae383b109bd61d0
Author: Martin Sperl <kernel@xxxxxxxxxxxxxxxx>
Date:   Sat Mar 30 09:31:00 2019 +0000

    spi: bcm2835aux: fix corruptions for longer spi transfers

for stable kernel 4.14 and 4.19.

If we want to fix this in 4.9 you should also pick:

commit bc519d9574618e47a0c788000fb78da95e18d953
Author: Rob Herring <robh@xxxxxxxxxx>
Date:   Thu May 3 13:09:44 2018 -0500

    spi: bcm2835aux: ensure interrupts are enabled for shared handler

Thanks,
/Sean