Re: [PATCH] spi/acpi: fix incorrect ACPI parent check

[Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>]

Hi

On 6/19/19 4:58 PM, Ard Biesheuvel wrote:
> So can you explain how exactly the I2C GPIO expander is failing? I
> struggle to understand how the SPI slave probing could be related to
> that.
They don't show up in /sys/kernel/debug/gpio, are not present in 
/sys/bus/i2c/devices/ but SPI core instead tries add them with a bogus 
Chip Select number:

[    5.727699][    T1] pxa2xx-spi pxa2xx-spi.5: cs56 >= max 4
[    5.733545][    T1] spi_master spi5: failed to add SPI device 
INT3491:00 from ACPI

--
Jarkko