On 24.02.2019, at 20:22, Stefan Wahren [off-list ref] wrote:

quoted

Finally we remove some dead code.

Martin Sperl (9):
 spi: bcm2835aux: fix driver to not allow 65535 (=-1) cs-gpios
 spi: bcm2835aux: warn in dmesg that native cs is not really supported
 spi: bcm2835aux: setup gpio-cs to output and correct level during
   setup
 spi: bcm2835aux: add driver specific stats to debugfs
 spi: bcm2835aux: make the polling duration limits configurable
 spi: bcm2835aux: unifying code between polling and interrupt driven
   code
 spi: bcm2835aux: remove dangerous uncontrolled read of fifo
 spi: bcm2835aux: use BCM2835_AUX_SPI_STAT_RX_LVL
 spi: bcm2835aux: remove dead code

i consider patch 7 and 8 as possible stable candidates. How about rearranging this series that these patches comes first and could be backported?

Well - as far as I know 6+7+8 can get applied independently 
(and you will need 6 as otherwise you would need to apply
at least 8 in 2 places).

The one observation that I have made is that when applying those
against 4.14 you needed some more patches that have gone in since
4.14 to apply cleanly.

Martin
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