[PATCH RESEND v2 4/7] regulator: mt6358: Fail probe on unknown chip ID

[AngeloGioacchino Del Regno]

Il 21/07/23 10:28, Chen-Yu Tsai ha scritto:
> The MT6358 and MT6366 PMICs, and likely many others from MediaTek, have
> a chip ID register, making the chip semi-discoverable.
> 
> The driver currently supports two PMICs and expects to be probed on one
> or the other. It does not account for incorrect mfd driver entries or
> device trees. While these should not happen, if they do, it could be
> catastrophic for the device. The driver should be sure the hardware is
> what it expects.
> 
> Make the driver fail to probe if the chip ID presented is not a known
> one.
> 
> Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
> Fixes: f0e3c6261af1 ("regulator: mt6366: Add support for MT6366 regulator")
> Signed-off-by: Chen-Yu Tsai <wenst at chromium.org>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>