SPI not working on 5.10 and 5.11, bisected to 766c6b63aa04 ("spi: fix client driver breakages when using GPIO descriptors")

[Christophe Leroy]

Hello,

My board has powerpc 885 microcontroler. Temperature sensor is an LM74.
Kernel has CONFIG_SPI_FSL_SPI and CONFIG_SPI_FSL_CPM and CONFIG_SENSORS_LM70.

Since kernel 5.10, 'sensors' reports temperature 0°C on my board:

        root@vgoip:~# sensors

        lm74-spi-0-5
        Adapter: SPI adapter
        temp1:         +0.0 C

        lm74-spi-0-1
        Adapter: SPI adapter
        temp1:         +0.0 C

With commit 766c6b63aa04 ("spi: fix client driver breakages when using GPIO descriptors") reverted, 
it is back to work:

        root@vgoip:~# sensors

        lm74-spi-0-5
        Adapter: SPI adapter
        temp1:        +38.9 C

        lm74-spi-0-1
        Adapter: SPI adapter
        temp1:        +37.2 C


What shall I do ?

Thanks
Christophe