On Fri, 17 Jan 2020, Vivek Kasireddy <vivek.kasireddy@xxxxxxxxx> wrote:
> Remove the i2c_bus_num >= 0 check from the adapter lookup function
> as this would prevent ACPI bus number override. This check was mainly
> there to return early if the bus number has already been found but we
> anyway return in the next line if the slave address does not match.
Hans, could I trouble you to check this on your collection of BYT DSI
devices please?
BR,
Jani.
>
> Fixes: 8cbf89db2941 ("drm/i915/dsi: Parse the I2C element from the VBT MIPI sequence block (v3)")
> Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
> Cc: Nabendu Maiti <nabendu.bikash.maiti@xxxxxxxxx>
> Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
> Cc: Bob Paauwe <bob.j.paauwe@xxxxxxxxx>
> Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
> Signed-off-by: Vivek Kasireddy <vivek.kasireddy@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_dsi_vbt.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
> index 6ec35d975bd7..04f953ba8f00 100644
> --- a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
> +++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
> @@ -394,8 +394,7 @@ static int i2c_adapter_lookup(struct acpi_resource *ares, void *data)
> acpi_handle adapter_handle;
> acpi_status status;
>
> - if (intel_dsi->i2c_bus_num >= 0 ||
> - !i2c_acpi_get_i2c_resource(ares, &sb))
> + if (!i2c_acpi_get_i2c_resource(ares, &sb))
> return 1;
>
> if (lookup->slave_addr != sb->slave_address)
--
Jani Nikula, Intel Open Source Graphics Center
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
