APPLIED[F]: [PATCH 1/1] i2c: core: Call i2c_acpi_install_space_handler() before i2c_acpi_register_devices()

[Ian May]

Applied to Focal/master-next.  Thanks!

Ian

On 2020-09-22 22:22:56 , Kai-Heng Feng wrote:
> From: Hans de Goede <hdegoede at redhat.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/1853277
> 
> Some ACPI i2c-devices _STA method (which is used to detect if the device
> is present) use autodetection code which probes which device is present
> over i2c. This requires the I2C ACPI OpRegion handler to be registered
> before we enumerate i2c-clients under the i2c-adapter.
> 
> This fixes the i2c touchpad on the Lenovo ThinkBook 14-IIL and
> ThinkBook 15 IIL not getting an i2c-client instantiated and thus not
> working.
> 
> BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1842039
> Signed-off-by: Hans de Goede <hdegoede at redhat.com>
> Reviewed-by: Mika Westerberg <mika.westerberg at linux.intel.com>
> Signed-off-by: Wolfram Sang <wsa at kernel.org>
> (cherry picked from commit 21653a4181ff292480599dad996a2b759ccf050f)
> Signed-off-by: Kai-Heng Feng <kai.heng.feng at canonical.com>
> ---
>  drivers/i2c/i2c-core-base.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
> index 4f09d4c31828..7031393c7480 100644
> --- a/drivers/i2c/i2c-core-base.c
> +++ b/drivers/i2c/i2c-core-base.c
> @@ -1336,8 +1336,8 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
>  
>  	/* create pre-declared device nodes */
>  	of_i2c_register_devices(adap);
> -	i2c_acpi_register_devices(adap);
>  	i2c_acpi_install_space_handler(adap);
> +	i2c_acpi_register_devices(adap);
>  
>  	if (adap->nr < __i2c_first_dynamic_bus_num)
>  		i2c_scan_static_board_info(adap);
> -- 
> 2.17.1
> 
> 
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