On Thu, Dec 30, 2021 at 03:17:21PM +0100, Hans de Goede wrote: > x86 ACPI devices which ship with only Android as their factory image > usually declare a whole bunch of bogus I2C devices in their ACPI tables. > > Instantiating I2C clients for these bogus devices causes various issues, > e.g. GPIO/IRQ resource conflicts because sometimes drivers do bind to them. > The Android x86 kernel fork shipped on these devices has some special code > to remove these bogus devices, instead of just fixing the DSDT <sigh>. > > Use the new acpi_quirk_skip_i2c_client_enumeration() helper to identify > known boards / acpi devices with this issue, and skip enumerating these. > > Note these boards typically do actually have I2C devices, just > different ones then the ones described in their DSDT. The devices > which are actually present are manually instantiated by the > drivers/platform/x86/x86-android-tablets.c kernel module. > > Reviewed-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> Reviewed-by: Wolfram Sang <wsa@xxxxxxxxxx>
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