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On devices with 2 sensors the 2 sensors may get probed simultaneously
and the v1p8 and v2p8 regulators are ususally shared between the
2 sensors.
This means that the probe() function of sensor 1 may end up calling
gmin_v1p8_ctrl(..., false) turning the regulator off while sensor 2's
probe() function still needs it to be on, causing the probe() of
sensor 2 to sometimes fail.
Fix this by adding an enable-count for both regulators and only
disabling them again when that goes to 0.
Note all this really should be converted to use the standard kernel
regulator framework, I have doing this on my long term TODO list,
this fix is only meant as a temporary workaround for the issue.
Link: https://lore.kernel.org/linux-media/20220116215204.307649-6-hdegoede@redhat.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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