On Sat, Mar 03, 2018 at 10:27:56PM +0000, Sasha Levin wrote:
> From: Jonas Gorski <jonas.gorski@gmail.com>
> 
> [ Upstream commit 0135c03df914f0481c61f097c78d37cece84f330 ]

Why are there so many more patches for v4.9 than for more recent
kernels?

> The bcm63xx SPI controller does not allow manual control of the CS
> lines and will toggle it automatically before and after sending data,
> so we are limited to messages that fit in the FIFO buffer. Since the CS
> lines aren't available as GPIOs either, we will need to make slave
> drivers aware of this limitation so they can handle them accordingly.

This seems really aggressive for stable...